Children and Television Essay

Nearly every household has access to television programming. With the variety of programs available children are exposed to many factors concerning choice. These choices can lead to a wide array of results depending on the type of content which is viewed. Positive programming can promote the learning of valuable skills and knowledge to enable success in life, while negative programming may have diverse opposite effects. The contents of television programming affect the health, behaviors and learned life skills in children. First, a discussion of physical health concerns. Television viewing by children can cause a variety of physical health concerns. Children face physical health issues because of the amount of time they spend watching television. A couple of these physical concerns are eyesight and eating disorders. The length of time children focus on the television screen, and the proximity they sit from the television screen, causes them to develop eyesight problems. Ideally, children should sit approximately â€Å"five feet away† from the television set according to McWilliams and Moulder. (1999) On the contrary, The Nemours Foundation explains the fallacy of children sitting close to television screens is not a cause of eyesight problems because children have the ability to focus at a closer distance than adults. (2010) In either event whether the sitting close to the television is the cause or a sign of an eye problem caution should still be used in not allowing children to sit too close to the television screen. Children also face problems with eating disorders from watching television. Children become fixated on programs causing inattention to their eating habits. Some children will not eat at all while others tend to overeat. These eating disorders are influenced by the content children are viewing through specific programming. One factor of this programming is that the advertisements target children encouraging them to desire specific products, such as how McDonalds offers toys to attract sales of their products. Findings of Zimmerman and Bell conclude, â€Å"Television viewing may be a sedentary activity, but it is not for that reason that it is associated with obesity in children. The relationship between television viewing and obesity among children is limited to commercial television viewing and probably operates through the effect of advertising obesogenic foods on television† (2010 p338). Children also face psychological health concerns in relation to television viewing. As children advance in age their minds become more developed giving them a better understanding of the environment surrounding them. Some content available on television causes specific phobias which â€Å"include fear of insects, snakes, and dogs; escalators, elevators, and bridges; high places; and open spaces† as well as many others† (Healthofchildren. com, 2012). The development of these phobias causes elevated anxiety levels in children. Children who watch many hours of graphic content such as horror movies, nature programs, and news broadcasts which implant images in their impressionable, young minds providing them with a sense that the world is an unsafe place. These anxieties influence different behaviors in children. Generally the negative content that can be viewed on television causes children to mimic behaviors and actions of the characters they see. â€Å"Repeated exposure to TV violence makes children less sensitive toward its effects on victims and the human suffering it causes† (Boyse, 2010). Children use their imagination during play. Children will oftentimes play games such as cops and robbers, cowboys and indians, or even mimic their favorite wrestling star causing harm to each other. These behaviors are viewed as unacceptable in society and can overflow into situations where the actions are inappropriate such as in school, grocery stores, or movie theaters. As children may not have a complete understanding of the motives of the content which they were presented though television, they may accept them as reality. However, the acceptance of this reality can cause positive behaviors as well. â€Å"Children imitate their parental role models that they love and trust; then they imitate other role models that might not be so worthy† ( Jagers, 2007). Depending on their understanding of the consequences of an action, children may choose a different mode of behavior concerning situations they encounter throughout their lives. A child who views someone getting burned may take caution when they are in a similar situation themselves. If a child observes someone calling 911 seeking assistance in an emergency situation, when confronted with this type of situation they will think to use this to their advantage. Some television shows for children encourage positive behaviors such as empathy, kindness, and helping others. These television shows encourage emotional development allowing children to display positive behaviors. One show that has these qualities is â€Å"Dora the Explorer† which highlights characters helping each other, helping other characters to achieve tasks, and being kind by using polite language such as please and thank you. Shows like â€Å"Dora the Explorer† provide children with a foundation of necessary life skills. Children learn various life skills such as social roles and interactions through the content of television programming. Television characters through their interactions teach children how to behave within certain situations. Viewing these interactions give children a guideline of social behaviors in a variety of situations that allow children to react to real life situations in a similar manner. The roles are not limited to specific situations in childhood, but reach across the lifespan. Children use television as an expectation of real life situations. A child who views family based programs will conclude a model of functionality within a family. Some shows portray families that are functional whereas other shows portray dysfunctional families. These programs provide children a model to relate their personal experiences. If a child comes from a dysfunctional family they may envy the lives of characters in functioning television families. In other ways, when viewing a dysfunctional family on television, a child may find new methods to solve problems within their own family. Television shows such as â€Å"Reba† may give children who are subject to divorce and remarriage of their parents a way to deal with the new family life they encounter. Also the gender roles highlighted on television provide children with expectations they should follow in their own lives. For girls, television may portray female roles of characters as mother, caregiver, and oftentimes business women. For boys, male character roles may be portrayed as father, disciplinarian, and supporter of the family. These expectations learned provide a productive model a child should attain in the eyes of society. Consequently, later in life a child’s impression of social rules and roles become part of their personality and can become individualized. This allows a boy who wishes to become a nurse not to view this decision as deviant. Another source of skills for success in life learned through television is the acquisition of knowledge and academic skills. â€Å"Children imitate their parental role models that they love and trust; then they imitate other role models that might not be so worthy† (Kirkman, Wartella, and Anderson, 2008, p. 47). One area of knowledge present in television shows targeted toward children is the recognition and association of letters, numbers and words. Children can be taught at a young age the association between what they are presented and hat they perceive, such as the #1 and the letter A. Through the elementary impression of these concepts a child learns secondary concepts such as reading, writing, and more. Some programming encourages the learning of foreign languages such as Chinese Spanish and French by exposing children to these languages making these concepts fun to learn. The acquisition of all these skills through television occurs in a passive manner. A child does not realize they are learning the content they perceive making television an effective outlet for teaching. Another skill set taught through television is problem solving through visual examples. As children view others making decisions concerning real life situations they can refer back to the outcome of a similar situation they may have previously viewed. This allows for them to make educated choices within their own lives or experiences. Such programs show the process one must take in problem solving, empowering them with the skills to decipher between right and wrong. Television also presents a less desirable outcome for successful life skills. Children who view content inappropriate for their age struggle with academics as well as face specific challenges later in life. As children gain an understanding of the content they are watching on television the presence of these struggles begins to decrease in their influential strength. An effect previously mentioned of children mimicking behaviors viewed on television, if a child learns and reflects defiant behavior toward authority the effect will not only cause poor grades but also dropping out of school. The child will avoid homework assignments because of the commands and deadlines made by the teacher. This defiance of authority leads to reprisals from administrators such as principals and academic counselors. Another challenge to the academic lives of children is the presence of structure in schools. This struggle exists because television can be accessed at any time whereas school has a specific schedule. A child struggles to focus during these times. A major cause of this inattention is that television produces a higher level of activity than school. Naturally the child would choose the more stimulating activity, which in the eyes of the child is television.

Psychology of Body Language

Navarro, Joe. (2008, January 1). Fast forces of attraction. Retrieved from http://www. psychologytoday. com/articles/200712/fast-forces-attraction | â€Å"Pitch correlates only loosely with height, but is closely tied to hormone levels—meaning it's a good indicator of fertility or dominance, as well as health and attractiveness. â€Å"In general, people with attractive voices have attractive faces,† says David Feinberg, a psychologist at McMaster University. † (pg. )| This is interesting because well one the use of the word correlation in this statement made me think of the correlation research method. Did they do actual research? And then I continued to where David Feinberg made his statement, and I believe this is untrue because again each person’s perception is different, I then continued to think of the saying â€Å"you have a face for radio† it just seemed contradictory. | | | â€Å"Accents affect our perceptions, as do speed and pitch. We jud ge fast talkers to be more educated, and those with varied inflection to be more interesting. Men prefer higher voices in women, and women like deeper voices in men (especially when ovulating or looking for a short-term relationship)†¦Ã¢â‚¬  (pg. 1)| When the word â€Å"perception† came about I immediately thought of the Cognitive Prospective. | †¦Ã¢â‚¬ That's why our brains have set us up to draw instantaneous inferences from tiny nuances of behavior, what psychologists call â€Å"thin slices† of judgment. We form first impressions of another's attractiveness in a tenth of a second, generating a symphonic burst of desire in which everything from voice to wit plays a part†¦Ã¢â‚¬  ( pg. ). | This section made me think that they used the Biological Prospective to explain the reasoning and help make it easier to see. | â€Å"People like people whom others find attractive. You might be inclined to think it's because socializing with (or sleeping with) the It girl enhances your own status in the crowd. † (pg. 2)| Right here is a great example of the Socio-cultural Prospective. It’s all about where you stand in our society today, and by this statement it is easy to see because it is very true. Its seems most evident in college students, seeing it firsthand. | â€Å"Most of us are drawn to those who hail from our own side of the tracks, and men and women are marrying within their social class much more than ever. † (pg. 2)| Again a perfect example of Sociocultural Prospective. | â€Å"†¦But ask 5,000 people and clear patterns emerge. Some traits have universal sex appeal because they're markers of good genes, health, and fertility: a fit body, clear skin, a symmetrical face with average-sized and -shaped features, and traits that mark sex hormones†¦Ã¢â‚¬  (pg. )| Now this section exemplifies the Evolutionary Prospective because people, even unknowingly, look for these traits because they want they’re offspring to be the strongest the fittest, which made me think of Darwinism. ‘The strong will survive. † The stronger, healthier, smarter, and most attractive evolve, the stay alive and most importantly pass their genes on. | Summary: this article was quite interesting, it talked about all aspects of attraction and explained from various prospectives of psychology. It talked about physical attributes such as looks, voice, health ect, to the mental part of attraction. | |

Algorithm design as it relates to time complexity problems like Research Paper

Algorithm design as it relates to time complexity problems like reducing fractions without using the euclidean algorithm for GCD - Research Paper Example The main difference of Algorithms both circuit implementation, testing and results expected. Modern processors that perform calculations need Algorithm design for present and future programmers. The paper also explains some key terms as used in the text in relation to computer design. It covers the need to maintain optimal code for future programmers due to complexity of testing circuits. Key words: Euclid’s Algorithm, Stein’s Algorithm, Built-In-Self-Test and Linear Feedback Shift Register. Algorithm Design Review of steps involved in solving time complexity problems 1. Euclidean algorithm Euclidean algorithm is an ancient efficient method used in computing the greatest common divisor (GCD) of two integers. The simplest Euclid’s algorithm starts with two positive integers. This then form a new pair that consists of the smaller number and the difference between the smaller and larger numbers. The process repeats until the numbers are equal. The resultant number t hen is the greatest common divisor of the original two integers. Euclid algorithm is described as GCD(a, 0) = a GCD(a, b) = GCD(b, a mod b) If and b>0, then GCD(a, a) = a GCD(a, b) = GCD(a - b, b) ; if b < a GCD(a, b) = GCD(a, b - a) ; if a < b For example, GCD(20, 0) is 20. Similarly, GCD(20, 10) is same as GCD((20-10), 10) = GCD(10, 10) = 10. 2. Stein’s Algorithm This algorithm is also a binary GCD algorithm. It computes the greatest common divisor of two nonnegative integers (Purdy, 1983). It is more efficient over the ancient Euclidean algorithm because it replaces multiplication and divisions with shifts, which are cheaper when operating on the binary representation used by modern computers. This is critical on embedded platforms available that do not have direct processor support for calculations of division. Stein’s algorithm is described as GCD(0, v) = v GCD(u, 0) = u GCD(0, 0) = 0 When v and u are even, then GCD(u, v) = 2.GCD(u/2, v/2) For an even u and an odd v, then GCD(u, v) = GCD(u/2 v) Similarly, if v is even and u is odd, then GCD(u, v) = GCD(u, v/2) In case, v and u are both odd, and if u ? v, then GCD(u, v) = GCD((u – v)/2, v) In case, both are odd, and u < v, then GCD(u, v) = GCD((v – u)/2, u) When initially solving a problem, how might one detect that a solution needs extra attention with respect to an efficient algorithm vs standard solutions where a highly efficient solution may be indistinguishable from an inefficient one? Identification of a problem is the first step towards solving a given mathematical equation. It involves examining for complexity to be able to simplify before any other complex operations take place. Time requirements spell complexity and attention are hence worth considering. Built-In Self Test (BIST) Modern computers have a built in IC for testing. This technique integrates the functionality of an automated test system within a chip. It is a Design where testing is accomplished by the help of built in hardware features. BIST has test controller, response verification and test generator. Test generator is responsible for generating test address sequence that compares the output from memory with the expected correct data. The BIST controller can be either hardwired logic, microcode controller or based on processor (Rekha Devi, 2011). Specifically discuss the potential tradeoff between an easy to understand inefficient solution vs a difficult to follow efficient solution. By employing Linear Feedback Shift

Perfect Competition and Monopoly Essay Example | Topics and Well Written Essays - 2500 words

Perfect Competition and Monopoly - Essay Example 1. The size of the firm relative to the market is small. Hence, it has no influence on price. The firm is a price taker. 2. The product is homogeneous meaning to the consumer the product of one seller is same as the product of other seller. 3. There is freedom of entry and exit for each firm. 4. There is free mobility of resources. 5. All the participants in the market have perfect knowledge, meaning that everyone is aware of his benefit, consumer knows prices, and producer knows cost and so on. If even one condition is not fulfilled, the market will not be perfect anymore, it will be imperfect. An extreme case of such imperfection is monopoly. Monopoly is that market in which there is only one seller (or a group of sellers acts as one - cartel) of a commodity that has no close substitute. The seller has complete control of the supply of the commodity and hence is the price maker. We shall now see where the equilibrium of the firm lies and also which conditions are necessary for it. Equilibrium of the firm We shall use the marginal revenue1 and marginal cost2 approach to study the equilibrium of the firm. There are two conditions to this equilibrium: 1. MR = MC 2. Slope of MR < Slope of MC. Price MC P T P MR=AR=P Quantity (output) 0 Z? Z As we can see in the above graph, there are two points where marginal revenue is equal to MC but at Z? if the quantity is increased, the firm is still earning profit. But after Z, the cost of per unit is more than its price. Hence Z is the equilibrium output. The equilibrium can be proved mathematically. Let Z be the output, TR the revenue and TC the cost. Profits are calculated as ? = TR – TC. To maximise the profits we need i.e. MR = MC, and i.e. Slope of MR < Slope of MC. Equilibrium in Perfect Competition and Monopoly in the Long Run As we are trying to see how both markets generate different profits in the long run, we shall assume that the market demand and costs do not change due to entry and exit of a firm from t he industry. Also, to simplify the analysis constant average cost is assumed. These assumptions give us MC = AC and the supply curve for perfect competition is equal to both costs. The equilibrium in perfect competition will be at the point where demand is equal to supply as this is where the price3 will set. The output will be according to this level. At this level price will be equal to MC and AC. In general, we can state the equilibrium in perfect competition as P = AR = MR = MC = AC Where P = Price of the commodity AR = Average Revenue MR = Marginal Revenue MC = Marginal Cost AC = Average Cost4. In case of monopoly the equilibrium will take place where marginal revenue is equal to marginal cost and the marginal cost curve cuts marginal revenue from below but there is an additional clause here that states that the marginal revenue will be less than the price. We can see both the equilibriums – for perfect competition and monopoly, in the figure. Comparison of Profit betwee n Perfect Competition & Monopoly The comparison can be seen in the figure above. In perfect competition the price is fixed. Only the output varies and therefore supply curve is horizontal. The equilibrium price for competitive firm is Pc, where MR=MC. But the output level is Qc where MC= AR, meaning supply is equal to demand. For monopoly, the equilibrium position is same, where MR=MC, but the output leve

Software Usability Essay Example | Topics and Well Written Essays - 500 words

Software Usability - Essay Example This website provides extensive information on usability, creation of better website and improvement of the performance of websites. The most useful feature of this website is the easy language, reliability of information and easier to use outlay. The content of the website can easily be understood by a beginner level website developer as well as a professional. The information is provided in a systematic way which helps the reader in understanding the web content more effectively. The website provides a number of useful links like the link to the official website of U.S. Department of Health & Human Services. It also provides links to facebook, hotmail, google, twitter and other websites to share this website with contacts and other people. Most of these websites are frequently used by people and sharing about this website may help others greatly. It provides a wonderful feature of increasing or decreasing the font size of the content of the webpage. This flexibility of the web cont ent is helpful as some websites provide such small fonts which readers find difficult to read and as a result abandon using the website.

Current Event Assignment Example | Topics and Well Written Essays - 500 words

Current Event - Assignment Example Obama’s administration actually declared a humanitarian crisis following the surge in migration of unaccompanied minors across the country especially in places with large immigrant populations. The government has therefore opened emergency centers on the Southwest part including California, Oklahoma and Texas to shelter the migrants who always fight back deportation orders. Places such as the New York where there is rise in child migrants have reported an increase in the number of unaccompanied minors who seek help in the past even as the migrants claim that they left their native countries because of violence and the threat of gang recruitment or economic necessity. The shelters that were created by the government have been at capacity in the recent months where they are detained before released to their relatives (Semple Web). In fact, the author explains that some minors such as Leo who has been highlighted in the article took almost two months in the shelters before being reunited with their relatives in the U.S. Semple has also indicated that most of the minors normally qualify for some form of immigration relief raising questions on the number of new arrivals who will be allowed to stay permanently in the U.S (Web). The greatest challenge faced by unaccompanied minors that require urgent needs such as health care, psychological counselling and ed ucational support that are not easy to offer hence exposing them to high risks. Immigration issues have been rampant in the recent issues even though it began it began several decades ago in America and across the world. American Federal System of Government have always tried to address the issue by instituting various policies on controlling and treatment of the migrants. For more than 150 years, federal government has been pre-eminent in immigration policy while Congress and

When Hackers Turn to Blackmail Article Example | Topics and Well Written Essays - 500 words

When Hackers Turn to Blackmail - Article Example Paul Layman, the CEO of Sunnylake, is in a quandary as to the options available to address the dilemma. Mr. Layman is faced with the following alternative courses of action: (1) pay the ransom fee of $100,00 to the hackers to immediately regain access to the system; (2) improve security system by changing access controls, installing power backups, increase defense in depth strategy, employ encryption of data during transmission, strengthen antivirus, power and data back-up systems, firewalls, employs a highly competent human resource, passwords, and other computer security software, as needed; (3) disclose critical information to stakeholders; and (4) go back to manual processing of health care records. After reviewing and evaluating the case facts including the expert advice of three commentators, Mr. Layman would be is the best position to do the following action. The advice of Richard L. Nolan is the most viable and consistent with the code of business ethics. First and foremost, Mr. Layman should decide once and for all that paying the hacker should not be considered at any cost. Conceding to their demands would make them vulnerable to future security breaches. Further there, there is no guarantee that these hackers would stick to their words. Concurrently, the stakeholders must be informed of the situation to make them aware of dilemma that hospital is currently addressing. At the same token, IT personnel must round the clock to upgrade and fully secure their information system to ensure that this would never happen in the future. The present system’s loopholes should all be corrected including installation of a dependable back up system and business continuity plan in case of emergency situations.  

Discussion Board Criminal Justice Essay Example | Topics and Well Written Essays - 750 words

Discussion Board Criminal Justice - Essay Example Law officers are known to lie under some pretext during an investigation to elicit information. The psychology of the criminals, the mandate of the Supreme Court, and the totality of the circumstance surrounding a case allows an officer to use psychic methods to bring forth revelations to solve cases. Officers in the process of interrogation can play this card if only to get valuable information from hardcore criminals. Rarely will any criminal openly declare his guilt in an interrogation unless he believes that the odds against him beating the case are overwhelming. Officers find themselves staring at an uncompromising, non-committal criminal in most cases. "If you can't beat them, join them" is a familiar phrase that most of us know. This is precisely what these officers in uniform do. Lie to a criminal, utilizing deception as a tool, to make it appear that there is evidence against the criminal to prove his involvement. This has a telling effect on the criminal. "A confession which is the product of an essentially free and unconstrained choice by its maker may be used as evidence to establish the guilt of the defendant in court. FSM v. Jonathan, 2 FSM Interim. 189,194 (Kos. 1986) Although questioning of witnesses and suspects is a necessary tool for the effective enforcement of criminal law, courts have recognized that there is an unbroken line from physical brutality to more subtle police use of deception, intimidation and manipulation, and that vigilance is required. FSM v. Jonathan, 2 FSM Interim. 189,195 (Kos. 1986) When a defendant has expressed a wish to meet with counsel before further questioning, questioning must cease at once. Any attempt by police officers to ignore or override the defendant's wish, or to dissuade him from exercising his right, violates 12 F.S.M.C. 218. FSM v. Edward, 3 FSM Interim. 224, 235 (Pon. 1987) Now consider these: Where a police officer promised to reduce charges if the defendant cooperated but there was no other showing of police intimidation or manipulation and the defendant had recognized that his guilt was apparent, the confession was not induced by the promises but instead was a voluntary response to the futility of carrying the deceit further. FSM v. Jonathan, 2 FSM Interim. 189,198 (Kos. 1986) In determining whether a defendant's statement to police is "voluntary," consistent with the due process requirements of the Constitution, courts should consider the totality of the surrounding circumstances. Courts review the actual circumstances surrounding confession and attempt to assess the psychological impact on the accused of those circum stances. FSM v. Edward, 3 FSM Interim. 224, 238 (Pon. 1987)" (Criminal Law and Procedure-Interrogation and Confession, zdigest.4.pdf referred on

College is worth it Essay Example | Topics and Well Written Essays - 500 words

College is worth it - Essay Example Therefore, after graduation, many students have huge debts to settle despite the reduced availability of jobs. This paper explores whether college education is worth its cost. Students who have acquired college degrees are more likely to get employment as compared to their colleagues with high school education (Time 1). Therefore, though the college education is relatively expensive; it is worth. However, it is important to consider the choice of course that a student enrolls in based on its demand in the market. Some courses are more marketable than others and they pay more and this is especially related to the technical courses such as engineering (Economist 1). The payoff of engineering courses within duration of about 20 years goes beyond a value of 1 million dollars. Students who have achieved a college education are reported to be contented with their investment. In a study that was conducted in United States 86% of the respondents said that college education was worth (Pew 1). This is from the fact that it opened their thinking and they were more likely to get employment as compared to those with high school education. Labor statistics fromUnited States further indicate that the employmentrates for college graduates are twice the national employment average (Konwerski 1). College education will remain valuable also based on the pay gap that is found between college graduate and high school graduates (Leonhardt 1). College education remains worth alsobased onthe fact that the unemployment rate for graduates is less than 5% as compared to the average of 13% unemployment rate in United States (Morgan 1). However, college degree is becoming more expensive and reducing the number of people accessing the education. In contrary, the amount of unpaid loans by college students has grown significantly over the years challenging worthiness of the

Team development Essay Example | Topics and Well Written Essays - 250 words

Team development - Essay Example The study used previously tested five-scale standards and a regression model based on team size as a control to test the constructs under the four hypotheses Firstly, the team tested the hypothesis that there is an association between relationship conflicts and team satisfaction is moderated by the extent of virtualness in that conflicts decrease team satisfaction as virtualness increases. The second hypothesis was that familiarity increases team satisfaction while virtualness decreases. The third hypothesis was that goal clarity increases team satisfaction as the extent of team virtualness increases. The last hypothesis was that the preference among team members for group work will increase team satisfaction as virtualness increases (Stark & Bierly, 2009). The results were such that all the four predictors (independent variables) were significantly correlated with team satisfaction. Relationship conflict was negatively correlated with team satisfaction while familiarity, goal clarity, and preference for teamwork were all positively correlated with team satisfaction. The study concluded that relationship conflicts negatively affect team satisfaction because member lack the time to resolve their differences. As virtualness increases members tend to prefer working in groups while familiarity and goal clarity also affect team satisfaction. Results from this study may help increase awareness that the levels of virtualness among team may have other cascading effects on team

Chocolate liquor Essay Example for Free

Chocolate liquor Essay Chocolate is a confection made from cacao beans, the seeds of the cacao plant. There are a large number of products made from it on the market, from powdered cocoa for making drinks to white chocolate, and most markets carry a cross-section of confections for their customers. In addition to being available at general markets and grocery stores, chocolate can also be purchased from specialty companies which make luxury and distinctive confections. Making chocolate is a time consuming process. Cacao plants are grown on plantations in South America, where the plant is native, and in parts of Africa. There are actually several varieties of cacao plant, all of which produce chocolates with slightly different flavors, and the flavor is also impacted by where the plant it grown, how it is handled after harvest, and how it is processed. Companies invest a great deal of money in developing ideal blends of cacao beans to create the flavors their consumers are used to. Cacao beans grow in large pods which are harvested once they ripen and then allowed to ferment. Initially, the cacao beans are extremely bitter; the fermentation process softens the bitterness, allowing producers to move on the next steps, roasting and hulling. Roasting helps to develop the flavor of the beans, while shelling exposes the cacao nibs, the portion of the bean which has all the flavor. Once cacao nibs are extracted, they must be ground into a substance known as chocolate liquor. This liquor isnt something youd want to eat: it is extremely fatty, thanks to the cocoa butter it contains, and it is gritty and bitter. This liquid is then pressed to create what is known as press cake, a substance consisting primarily of cocoa solids, while the cocoa butter is allowed to drain away. Once press cake has been created, producers have a number of options. To make cocoa, they can squeeze the press cake even more to isolate the cocoa solids before allowing it to dry and then pulverizing it. They can also blend some of the cocoa butter back in, along with sugar and other ingredients, to produce eating chocolate, which is subjected to a process called conching to create a smooth, creamy confection without any traces of grittiness. Eating varieties can also be adulterated with milk, creating milk chocolate, and the level of sweetness can vary widely. For white chocolate, cocoa butter is mixed with vanilla and milk. The history of chocolate is almost as interesting as the confection itself. In its native South America, it was prepared in drinks reserved for royalty and high ranking members of society. When European explorers visited, they were introduced to chocolate, and upon bringing the food back to Europe, it became a big hit. Eventually, Europeans started experimenting, adding sugar and other ingredients and ultimately developing a process which would allow them to make bars in addition to drinks. With the development of bar chocolate, confectioners realized that it had a wide range of possibilities, from candy bar coating to truffles, and the once rare luxury turned into an extremely profitable global industry.

Role Of Womens Rights In Afghanistan

Role Of Womens Rights In Afghanistan Do you think that Afghan nation from the outset needs only men to serve it? Before Islam, women were treated like slaves or property. Their personal consent concerning anything related to their well-being was considered unimportant, to such a degree that they were never even treated as a party to a marriage contract. Women were used for one purpose, and then discarded. They had no independence, could own no property and were not allowed to inherit. In times of war, women were treated as part of the prize. Their condition was unspeakable. In addition, the birth of a daughter in a family was not an occasion for happiness, but was regarded as embarrassment. The practice of killing female children was uncontrolled. With the arrival of Islam a verse came from the Quran criticizing those who practiced female infanticide: And when the news of (the birth of) a female (child) is brought to any of them, his face becomes dark, and he is filled with inward grief! He hides himself from the people because of the evil of that whereof he has been informed. Shall he keep her with dishonor or bury her in the earth? Certainly, evil is their decision (An-Nahle 16:58-59). Afghanistan is the only country in the world where women are symbolized to all other countries. Afghan womens current situation is not only the result of Taliban, but there exists a history over the centuries of Afghan womens situation. Afghanistan is a country that lost all its economical infrastructures passing three decades of war, has been faced with Economical, Social and cultural problems. One of the major problems that Afghans are suffering is violence against womens rights. Taking in to consideration that many activities have been accomplished since 2001 by international and governmental organizations but statistic show that problems have been remained and vast number of women are still suffering from violence. Many of women are deprived from education. A few women participate in political and social activities. As observed in Kabul, a woman suffers from violence every 30 minutes and 3% of women participate in governmental decision making activities. Only 11 percents of women were candidates in the 2010 parliamentary elections. Some of the challenging facts Afghan women faces in daily life are listed as following: Every 30 minutes, an Afghan woman dies during childbirth, 87 percent of Afghan women are illiterate, 30 percent of girls have access to education in Afghanistan, 1 in every 3 Afghan women experience physical, psychological or sexual violence, 44 years is the average life expectancy rate for women in Afghanistan, and 70 to 80 percent of women face forced marriages in Afghanistan (The Plight of Afghan Woman) Since the fall of the Taliban in late 2001, many people would agree that the political and cultural position of Afghan women have improved substantially. The recently adopted Afghan constitution states that the citizens of Afghanistan whether man or woman- has equal rights and duties before the law. So far, women have been allowed to return back to work, the government no longer forces them to wear the all-covering burqa, and they even have been appointed to top positions in the government. Although many people believe that women have equal rights to men, but Afghan women, especially in the rural areas of Afghanistan are not equally treated and their rights are violated. Women are not allowed to get education, women are forced into early age marriage and they have no right to work equally with men and take part in social activities. In many societies today, especially in Afghanistan, a woman is only valued and considered important if she performs the functions of a man, while displaying her feminine attractions to the public. If women get involved in politics, they would stop marrying, having children, and the human race would greatly be affected. Women are emotional creatures, and incapable of making a sound political decision. Afghan men, Typically among Pashtun families, parents believe that their daughters going to school is an immoral act, such as: being friend with the boys and then claiming to marry with the boy of their own choice. They have the ideas saying that their daughters may adopt non-cultural behaviors at school, such as: changes in their clothing, adapting modern clothing and ways of thinking, which are not accepted in Afghan culture. In most afghan families, relatives and friends advise each others for not letting their daughters attend school. A girl is considered as a financial burden on her parents; therefore, parents give their daughters to men who are in their fathers age to receive marriage cost and lessen their home expenses. In the most provinces of Afghanistan, girls are sold to men without knowing a girls consent, and then these girls are used as labors by her husband and in-laws family for carrying physical loads of the whole family. First, its known that education, especially for girls is among basic requirements for an improved life standard in any society, however 85 percents of women and girls are illiterate in Afghanistan. The United States of America International Aid (USAID) allocated fund to address this challenge that constitute the lowest educational level in the country, and girls are facing many problems in this area. Womens education is a foundation for building womens human capital and a requirement for their meaningful participation, effective leadership, and enjoyment equal of rights. Although, the womens right to education is legally protected by law, the Afghan women have been long deprived of their right to education and still the participation of girls and women in various levels and fields of education is limited and they face numerous constraints. Access to equal education opportunity still is a dream for many women. Despite of educational improvements in recent years, women still face a num ber of obstacles in their way to education such as early marriage; restricted movement; cultural barriers, security, transport constraints, shortage of qualified female teachers especially in rural areas, poor school infrastructure and facilities and the lower value attached to girls and womens education. In Afghanistan, the number of girls going to school is less than half the number of school boys and even in some provinces, like Zabul, this percentage is 3%; though the numbers of male and female populations aging between 6-18 year old dont have a considerable difference. Another problem in terms of education in Afghanistan is the number of female schools including elementary and high schools that has decreased considerably. In Kandahar, for example, there are 255 elementary schools, whilst 20 high schools exist in the city. In central region of the country there are 256 elementary schools and only 27 high schools, which show unwillingness of girls to study (Commission). Nearly 10 00 girls schools have been destroyed. Girls and teachers have been killed in a return of the Taliban reign of terror. Only 18% of Afghan women have skilled medical personnel present when they give birth (Feminism, Womens Rights Articles Issues). In Paktia province last year, a shura of elders decided that a 25-year-old man who sexually abused a 7-year-old relative girl should pay compensation to the childs family. They also decreed the girl should marry her rapist when shes older (The Star). Due to fear of Taliban or local warlords, girls cannot go outside their homes. If they go to schools, they are burnt, acid is thrown on their faces, or Taliban kill their family members. Almost in all provinces of Afghanistan girls are sexually abused and harassed. Girls are kidnapped on their way to school. They are kidnapped for different purposes by the Taliban or local warlords, to make money by selling them or to use for smuggling, or marry them by force. Second, forced marriages constitute the other serious problems of women in Afghanistan which is exercised on different ways and forms as to payment of huge dowry, underage marriage, engaging in the very early days when a child is born. Widows are still considered as a heritage and are not allowed to marry other man willingly. Forced marriage is considered to be one of the main cases of women rights violation in all over the country. For instance, only in Helmand Province 144 cases of forced marriage is registered by the Commission so far this year, mostly exercised as badal (girls exchange in families for marriage) and huge payment of dowry. In many parts of Afghanistan, marriages have taken place with threats by the powerful people, gunmen or in repayment for depts. Another reason considerably increases the number of early age marriages is the poverty in Afghan families. Third, in Islam, the value and importance of women in society and the true measure of their success as human beings, is measured with completely different criteria: their fear of Allah (SWT) and obedience to Him, and fulfillment of the duties he has assigned them, particularly that of bearing, nurturing and teaching children. Islam is a practical religion, and responds to human needs and life situations. Many women need, or wish, to work for various reasons. For example, they may possess a needed skill, such as a teacher or a doctor. While Islam does not prohibit women working outside the home, it specifies that the following restrictions be followed to safeguard the dignity and honor of women and the purity and stability of the Islamic society. Muslim women are not forbidden from going out in the community, working, or visiting relatives and female friends, if there is no objection from their guardian/husband and they are covered and behave and speak according to Islamic guidelines and, if necessary, escorted by their Mahram (male relative). However, a womans home should be the main base that she works from. Allah (SWT) instructed the wifes of the Prophet (SAW): O wives of the Prophet! You are not like any other women. If you keep your duty (to Allah), then be not soft in speech, lest he is whose heart is a disease (of hypocrisy or evil desire for adultery, etc.) should be moved with desire, but speak in an honorable manner. And stay in your houses, and do not display yourselves like that of the times of ignorance, and offer prayers perfectly (Iqamat-as-Salat), and give Zakat and obey Allah and His Messenger. Allah wishes only to remove Ar-Rijs (evil deeds and sins, etc.) from you, O members of the family [of the Prophet (SAW)], and to purify you with a thorough purification (Quran Al-Ahzab 33:32-33). Afghanistans social development can only be ensured through democracy and the reduction of poverty, the success of both being assured through full participation of women, especially in rural Afghanistan. Afghanistan has always had elite and middle-class women who asserted their rights and walked towards modernization. But a lot of most Afghan women in rural areas have been one of oppression through tribal customs and dictates. Womens rights are human rights. They are not simply American, or western customs. They are universal values which we have a responsibility to promote throughout the world, and especially in a place like Afghanistan. It is not only the right thing to do; it is the smart thing to do.

Soil Analysis of the Himalayan Mountain System

Soil Analysis of the Himalayan Mountain System Chapter- 4 ABIOTIC ENVIRONMENTAL VARIABLES OF MORAINIC AND ALPINE ECOSYSTEMS Global warming/ enhanced greenhouse effect and the loss of biodiversity are the major environmental issues around the world. The greatest part of the worlds population lives in the tropical regions. Mountainous regions in many cases provide favourable conditions for water supply due to orographically enhanced convective precipitation. Earth scientists are examining ancient periods of extreme warmth, such as the Miocene climatic optimum of about 14.5-17 million years ago. Fossil floral and faunal evidences indicate that this was the warmest time of the past 35 million years; a mid-latitude temperature was as much as 60C higher than the present one. Many workers believe that high carbon dioxide levels, in combination with oceanographic changes, caused Miocene global warming by the green house effect. Pagani et al. (1999) present evidence for surprisingly low carbon dioxide levels of about 180-290ppm by volume throughout the early to late Miocene (9-25 million years). They concluded tha t green house warming by carbon dioxide couldnt explain Miocene warmth and other mechanism must have had a greater influence. Carbon dioxide is a trace gas in the Earths atmosphere, which exchanges between carbon reservoirs in particularly the oceans and the biosphere. Consequently atmospheric concentration shows temporal, local and regional fluctuations. Since the beginning of industrialization, its atmospheric concentration has increased. The 1974 mean concentration of atmospheric CO2 was about 330 ÃŽ ¼mol mol-1 (Baes et. al., 1976), which is equivalent to 2574 x 1015 g CO2 702.4 x 1015 C assuming 5.14 x 1021 g as the mass of the atmosphere. This value is significantly higher than the amount of atmospheric CO2 in 1860 that was about 290 ÃŽ ¼mol mol-1 (617.2 x 1015 g). Precise measurements of the atmospheric CO2 concentration started in 1957 at the South Pole, Antarctica (Brown and Keeling, 1965) and in 1958 at Mauna Loa, Hawaii (Pales and Keeling, 1965). Records from Mauna Loa show that the concentration of CO2 in the atmosphere has risen since 1958, from 315 mmol mol-1 to approximately 360 315 mmol mol-1 in 1963 (Boden et al., 1994). From these records and other measurements that began more recently, it is clear that the present rate of CO2 increase ranges between 1.5 and 2.5 mmol mol-1 per annum. In the context of the Indian Himalayan region, the effect of warming is apparent on the recession of glaciers (Valdiya, 1988), which is one of the climatic sensitive environmental indicators, and serves as a measure of the natural variability of climate of mountains over long time scales (Beniston et al., 1997). However no comprehensive long-term data on CO2 levels are available. The consumption of CO2 by photosynthesis on land is about 120 x 1015 g dry organic matter/year, which is equivalent to about 54 x 1015gC/yr (Leith and Whittaker, 1975). Variations in the atmospheric CO2 content on land are mainly due to the exchange of CO2 between vegetation and the atmosphere (Leith, 1963; Baumgartner, 1969). The process in this exchange is photosynthesis and respiration. The consumption of CO2 by the living plant material is balanced by a corresponding production of CO2 during respiration of the plants themselves and from decay of organic material, which occurs mainly in the soil through the activity of bacteria (soil respiration). The release of CO2 from the soil depends on the type, structure, moisture and temperature of the soil. The CO2 concentration in soil can be 1000 times higher than in air (Enoch and Dasberg, 1971). Due to these processes, diurnal variations in the atmospheric CO2 contents on ground level are resulted. High mountain ecosystems are considered vulnerable to climate change (Beniston, 1994; Grabherr et al., 1995; Theurillat and Guisan, 2001). The European Alps experienced a 20 C increase in annual minimum temperatures during the twentieth century, with a marked rise since the early 1980s (Beniston et al., 1997). Upward moving of alpine plants has been noticed (Grabherr et al., 1994; Pauli et al., 2001), community composition has changed at high alpine sites (Keller et al., 2000), and treeline species have responded to climate warming by invasion of the alpine zone or increased growth rates during the last decades (Paulsen et al., 2000). Vegetation at glaciers fronts is commonly affected by glacial fluctuations (Coe, 1967; Spence, 1989; Mizumo, 1998). Coe (1967) described vegetation zonation, plant colonization and the distribution of individual plant species on the slopes below the Tyndall and Lewis glaciers. Spence (1989) analyzed the advance of plant communities in response to the re treat of the Tyndall and Lewis glaciers for the period 1958- 1984. Mizumo (1998) addressed plant communities in response to more recent glacial retreat by conducting field research in 1992, 1994, 1996 and 1997. The studies illustrated the link between ice retreat and colonization near the Tyndall and Lewis glaciers. The concern about the future global climate warming and its geoecological consequences strongly urges development and analysis of climate sensitive biomonitoring systems. The natural elevational tree limit is often assumed to represent an ideal early warming line predicted to respond positionally, structurally and compositionally even to quite modest climate fluctuations. Several field studies in different parts of the world present that climate warming earlier in the 20th century (up to the 1950s 1960s) has caused tree limit advances (Kullman, 1998). Purohit (1991) also reported upward shifting of species in Garhwal Himalaya. The Himalayan mountain system is a conspicuous landmass characterised by its unique crescent shape, high orography, varied lithology and complex structure. The mountain system is rather of young geological age through the rock material it contains has a long history of sedimentation, metamorphism and magmatism from Proterozoic to Quaternary in age. Geologically, it occupies a vast terrain covering the northern boundary of India, entire Nepal, Bhutan and parts of China and Pakistan stretching from almost 720 E to 960 E meridians for about 2500 km in length. In terms of orography, the geographers have conceived four zones in the Himalaya across its long axis. From south to north, these are (i) the sub-Himalaya, comprising low hill ranges of Siwalik, not rising above 1,000 m in altitude; (ii) the Lesser Himalaya, comprising a series of mountain ranges not rising above 4000 m in altitude; (iii) the Great Himalaya, comprising very high mountain ranges with glaciers, rising above 6,000 m i n altitude and (iv) the Trans-Himalaya, Comprising very high mountain ranges with glaciers. The four orographic zones of the Himalaya are not strictly broad morpho-tectonic units though tectonism must have played a key role in varied orographic attainments of different zones. Their conceived boundaries do not also coincide with those of litho-stratigraphic or tectono-stratigraphic units. Because of the involvement of a large number of parameters of variable nature, the geomorphic units are expected to be diverse but cause specific, having close links with mechanism and crustal movements (Ghosh, et al., 1989). Soil is essential for the continued existence of life on the planet. Soil takes thousands of years to form and only few years to destroy their productivity as a result of erosion and other types of improper management. It is a three dimensional body consisting of solid, liquid and gaseous phase. It includes any part of earths crust, which through the process of weathering and incorporation of organic matter has become capable in securing and supporting plants. Living organisms and the transformation they perform have a profound effect on the ability of soils to provide food and fiber for expanding world population. Soils are used to produce crops, range and timber. Soil is basic to our survival and it is natures waste disposal medium and it serves as habitats for varied kinds of plants, birds, animals, and microorganisms. As a source of stores and transformers of plant nutrients, soil has a major influence on terrestrial ecosystems. Soil continuously recycles plant and animal remains , and they are major support systems for human life, determining the agricultural production capacity of the land (Anthwal, 2004). Soil is a natural product of the environment. Native soil forms from the parent material by action of climate (temperature, wind, and water), native vegetation and microbes. The shape of the land surface affects soil formation. It is also affected by the time it took for climate, vegetation, and microbes to create the soil. Soil varies greatly in time and space. Over time-scales relevant to geo-indicators, they have both stable characteristics (e.g. mineralogical composition and relative proportions of sand, silt and clay) and those that respond rapidly to changing environmental conditions (e.g. ground freezing). The latter characteristics include soil moisture and soil microbiota (e.g. nematodes, microbes), which are essential to fluxes of plant nutrients and greenhouse gases (Peirce, and Larson, 1996.). Most soils resist short-term climate change, but some may undergo irreversible change such as lateritic hardening and densification, podsolization, or large-scale erosion. Chemical degradation takes place because of depletion of soluble elements through rainwater leaching, over cropping and over grazing, or because of the accumulation of salts precipitated from rising ground water or irrigation schemes. It may also be caused by sewage containing toxic metals, precipitation of acidic and other airborne contaminants, as well as by persistent use of fertilizers and pesticides (Page et al., 1986). Physical degradation results from land clearing, erosion and compaction by machinery (Klute, 1986). The key soil indicators are texture (especially clay content), bulk density, aggregate stability and size distribution, and water-holding capacity (Anthwal, 2004). Soil consists of 45% mineral, 25% water, 25% air and 5% organic matter (both living and dead organisms). There are thousands of different soils throughout the world. Soil are classified on the basis of their parent material, texture, structure, and profile There are five key factors in soil formation: i) type of parent material; ii) climate; iii) overlying vegetation; iv) topography or slope; and v) time. Climate controls the distribution of vegetation or soil organisms. Together climate and vegetation/soil organisms often are called the active factors of soil formation (genesis). This is because, on gently undulating topography within a certain climatic and vegetative zone a characteristic or typical soil will develop unless parent material differences are very great (Anthwal, 2004). Thus, the tall and mid-grass prairie soils have developed across a variety of parent materials. Soil structure comprises the physical constitution of soil material as expressed by size, shape, and arrangement of solid particles and voids (Jongmans et al., 2001). Soil structure is an important soil property in many clayey, agricultural soils. Physical and chemical properties and also the nutrient status of the soil vary spatially due to the changing nature of the climate, parent material, physiographic position and vegetation (Behari et al., 2004). Soil brings together many ecosystem processes, integrating mineral and organic processes; and biological, physical and chemical processes (Arnold et al., 1990, Yaalon 1990). Soil may respond slowly to environmental changes than other elements of the ecosystem such as, the plants and animal do. Changes in soil organic matter can also indicate vegetation change, which can occur quickly because of climatic change (Almendinger, 1990). In high altitudes, soils are formed by the process of solifluction. Soils on the slopes above 300 are generally shallow due to erosion and mass wasting processes and usually have very thin surface horizons. Such skeletal soils have median to coarse texture depending on the type of material from which they have been derived. Glacial plants require water, mineral resources and support from substrate, which differ from alpine and lower altitude in many aspects. The plant life gets support by deeply weathered profile in moraine soils, which develops thin and mosaic type of vegetation. Most of the parent material is derived by mechanical weathering and the soils are rather coarse textured and stony. Permafrost occurs in many of the high mountains and the soils are typically cold and wet. The soils of the moraine region remain moist during the summer because drainage is impeded by permafrost (Gaur, 2002). In general, the north facing slopes support deep, moist and fertile soils. The south facing slopes, on the other hand, are precipitous and well exposed to denudation. These soils are shallow, dry and poor and are often devoid of any kind of regolith (Pandey, 1997). Based on various samples, Nand et al., (1989) finds negative correlation between soil pH and altitude and argues that decrease in pH with the increase in elevation is possibly accounted by high rainfall which facilitated leaching out of Calcium and Magnesium from surface soils. The soils are invariably rich in Potash, medium in Phosphorus and poor in Nitrogen contents. However, information on geo-morphological aspects, soil composition and mineral contents of alpine and moraine in Garhwal Himalaya are still lacking. Present investigation was aimed to carry out detail observations on soil composition of the alpine and moraine region of Garhwal Himalaya. 4.1. OBSERVATIONS As far as the recordings of abiotic environmental variables of morainic and alpine ecosystems of Dokriani Bamak are concerned, the atmospheric carbon dioxide and the physical and chemical characteristics of the soil were recorded under the present study. As these are important for the present study. 4.1.1. Atmospheric Carbon Dioxide Diurnal variations in the atmospheric CO2 were recorded at Dokriani Bamak from May 2005- October 2005. Generally the concentration of CO2 was higher during night and early morning hours (0600-0800) and lower during daytime. However, there were fluctuations in the patterns of diurnal changes in CO2 concentration on daily basis. In the month of May 2005, carbon dioxide concentration ranged from a minimum of 375Â µmol mol-1 to a maximum of 395Â µmol mol-1. When the values were averaged for the measurement days the maximum and minimum values ranged from 378Â µmol mol-1 to 388Â µmol mol-1. A difference of 20Â µmol mol-1 was found between the maximum and minimum values recorded for the measurement days. When the values were averaged, a difference of 10Â µmol mol-1 was observed between maximum and minimum values. During the measurement period, CO2 concentrations varied from a minimum of 377ÃŽ ¼mol mol-1 at 12 noon to a maximum of 400ÃŽ ¼mol mol-1 at 0800 hrs in the month of June, 2005. When the CO2 values were averaged for 6 days, the difference between the minimum and maximum values was about 23ÃŽ ¼mol mol-1. In the month of July, levels of carbon dioxide concentrations ranged from a minimum of 369ÃŽ ¼mol mol-1 to a maximum of 390ÃŽ ¼mol mol-1. When the values of the carbon dioxide concentrations for the measuring period were averaged, the difference between the minimum and maximum values was about 21ÃŽ ¼mol mol-1. Carbon dioxide concentration ranged from a minimum of 367ÃŽ ¼mol mol-1 to a maximum of 409ÃŽ ¼mol mol-1 during the month of August. When the values of carbon dioxide were averaged for the measurement days, the difference in the minimum and maximum values was about 42ÃŽ ¼mol mol-1. During the measurement period (September), CO2 concentrations varied from a minimum of 371ÃŽ ¼mol mol-1 at 12 noon to a maximum of 389ÃŽ ¼mol mol-1 at 0600 hrs indicating a difference of 18ÃŽ ¼mol mol-1 between the maximum and minimum values. When the values of the measurement days were averaged the minimum and maximum values ranged from 375ÃŽ ¼mol mol-1 to 387ÃŽ ¼mol mol-1 and a difference of 12ÃŽ ¼mol mol-1 was recorded. During the month of October, carbon dioxide levels ranged from a minimum of 372ÃŽ ¼mol mol-1 at 1400 hrs to a maximum of 403ÃŽ ¼mol mol-1 at 2000 hrs indicating a difference of 31ÃŽ ¼mol mol-1. When the values were averaged, the carbon dioxide levels ranged from a minimum of 376ÃŽ ¼mol mol-1 to a maximum of 415ÃŽ ¼mol mol-1.A difference in the minimum and maximum values was found to be 39Â µmol mol-1 when the values were averaged for the measurements days. In the growing season (May-October) overall carbon dioxide concentration was recorded to be highest in the month of June and seasonally it was recorded highest during the month of October 4.1.2. A. Soil Physical Characteristics of Soil Soil Colour and Texture Soils of the study area tend to have distinct variations in colour both horizontally and vertically (Table 4.1). The colour of the soil varied with soil depth. It was dark yellowish brown at the depth of 10-20cm, 30-40cm of AS1 and AS2, brown at the depth of 0-10cm of AS1 and AS2 and yellowish brown at the depths of 20-30cm, 40-50cm, 50-60cm of AS1 and AS2). Whereas the soil colour was grayish brown at the depths of 0-10cm, 30-40cm, 50-60cm of MS1 and MS2, dark grayish brown at the depths of 10-20cm, 20-30cm of MS1 and MS2 and brown at the depth of 40-50cm of both the moraine sites (MS1 and MS2). Soil texture is the relative volume of sand, silt and clay particles in a soil. Soils of the study area had high proportion of silt followed by sand and clay (Table 4.2). Soil of the alpine sites was identified as silty loam category, whereas, the soil of the moraine was of silty clayey loam category. Soil Temperature The soil temperature depends on the amount of heat reaching the soil surface and dissipation of heat in soil. Figure 4.2 depicts soil temperature at all the sites in the active growth period. A maximum (13.440C) soil temperature was recorded during the month of July and minimum (4.770C) during the month of October at AS1. The soil temperature varied between 5.10C being the lowest during the month of October to 12.710C as maximum during the month of August at AS2. Soil temperature ranged from 3.240C (October) to 11.210C (July) at MS1. However, the soil temperature ranged from 3.40C (October) to 12.330C (July) at MS2. Soil Moisture (%) Moisture has a big influence on soils ability to compact. Some soils wont compact well until moisture is 7-8%. Â  Likewise, wet soil also doesnt compact well. The mean soil water percentage (Fig. 4.3) in study area fluctuated between a maximum of 83% (AS1) to a minimum of 15% (AS2). The values of soil water percentage ranged from a minimum of 8% (MS2) to a maximum of 80% (MS1). Soil water percentage was higher in the month of July at AS1 and during August at MS1 (. During the month of June, soil water percentage was recorded minimum in the lower depth (50-60cm) at both the sites. Water Holding Capacity (WHC) The mean water holding capacity of the soil varied from alpine sites to moraine sites (Table 4.4). It ranged from a maximum of 89.66% (August) to a minimum of 79.15% (May) at AS1. The minimum and maximum values at AS2 were 78.88% (May) to 89.66% (August), respectively. The maximum WHC was recorded to be 84.61 % during the month of September on upper layer (0-10 cm) at MS1 and minimum 60.36% during the month of May in the lower layer (50-60cm) at MS1. At MS2, WHC ranged from 60.66% (May) to 84.61% (September). However, maximum WHC was recorded in upper layers at both the sites of alpine and moraine. Soil pH The soil pH varied from site to site during the course of the present study (Table 4.5). Mean pH values of all the sites are presented in Figure 4.4 The soil of the study area was acidic. Soil of the moraine sites was more acidic than that of the alpine sites. Soil pH ranged from 4.4 to 5.3 (AS1), 4.5 to 5.2 (AS2), 4.9 to 6.1 (MS1) and 4.8 to 5.7 (MS2). 4.1.2 B. Chemical Characteristics of Soil Organic Carbon (%): Soil organic carbon (SOC) varied with depths and months at both the alpine and moraine sites (Table 4.6). High percentage of organic carbon was observed in the upper layer of all sites during the entire period of study. Soil organic C decreased with depth and it was lowest in lower layers at all the sites. Soil organic carbon was maximum (5.1%) during July at AS1 because of high decomposition of litter, while it was minimum (4.2%) during October due to high uptake by plants in the uppermost layer (0-10 cm). A maximum (5.0%) SOC was found during the month of July and minimum (4.1%) during October at AS2. At the moraine sites, maximum (3.58%, 3.73%) SOC was found during June and minimum (1.5% and 1.9%) during August at MS1 and MS2 respectively. Phosphorus (%): A low amount of phosphorus was observed from May to August which increased during September and October. The mean phosphorus percentage ranged from 0.02 Â ± 0.01 to 0.07 Â ± 0.03 at AS1 and AS2. It was 0.03Â ±0.01 to 0.03Â ±0.02 at MS1 and MS2. Maximum percentage of phosphorus was estimated to be 0.09 in the uppermost layer (0-10 cm) during October at AS1. The lower layer (40-50 cm) of soil horizon contained a minimum of 0.01% phosphorus during September at AS1 and AS2. In the moraine sites (MS1 and MS2), maximum phosphorus percentage of 0.03 Â ±0.01 was estimated in the upper layers (0-10, 10-20, 20-30 cm) while it was found to be minimum (0.02Â ±0.01) in the lower layers (30-40 cm). Overall, a decreasing trend in amount of phosphorus was found with depth in alpine as well as moraine sites Potassium (%): A decline in potassium contents was also observed with declining depth during the active growing season. Maximum value of potassium was found in the uppermost layer (0-10 cm) at all the sites. The mean values ranged from 0.71Â ±0.02 to 46Â ±0.06 at AS1 while it was 0.71Â ±0.02 to 0.47Â ±0.05 at AS2. In the moraine sites the values ranged from a minimum of 0.33 Â ±0.06 to a maximum of 0.59Â ±0.05 in the MS1 and from 0.59Â ±0.05 to 0.32Â ±0.06 at MS2. In the upper layer of soil horizon (0-10 cm), maximum value of 0.74 %, 0.75% of potassium was observed during the month of July at AS1 and AS2. While the values were maximum in the month of October at moraine sites MS1 and MS2 having 0.66% and 0.65% respectively Nitrogen (%): Highest percentage of nitrogen was found in the upper layers at all the sites. Maximum percentage of nitrogen were found during the month of July-August (0.25%, 0.25 and 0.26%, 0.25%) at AS1 and AS2, respectively. Maximum values of 0.18% and 0.15% respectively were found during the month of June at the moraine sites MS1 and MS2. The nitrogen percentage ranged from 0.23Â ±0.02 to 0.04Â ±0.01% at AS1. However, it ranged from a minimum of 0.05Â ±0.01 to 0.24Â ±0.02% at AS2. The nitrogen percentage ranged from a minimum of 0.03Â ±0.01, 0.02Â ±0.04% to a maximum of 12Â ±0.03, 13Â ±0.01%, respectively at MS1 and MS2 Overall, a decreasing trend was noticed in the nitrogen percentage with depth at both the alpine and moraine sites. 4.2. DISCUSSION Soil has a close relationship with geomorphology and vegetation type of the area (Gaur, 2002). Any change in the geomorphological process and vegetational pattern influences the pedogenic processes. However, variability in soil is a characteristic even within same geomorphic position (Gaur, 2002). Jenney (1941) in his discussion on organisms as a soil forming factors treated vegetation both as an independent and as dependent variable. In order to examine the role of vegetation as an independent variable, it would be possible to study the properties of soil as influenced by vegetation while all other soil forming factors such as climate, parent material, topography and time are maintaining at a particular constellation. Many soil properties may be related to a climatic situation revealing thousand years ago (e.g. humid period during late glacial or the Holocene in the Alps and Andes (Korner, 1999). The soil forming processes are reflected in the colour of the surface soil (Pandey, 1997). The combination of iron oxides and organic content gives many soil types a brown colour (Anthwal, 2004). Many darker soils are not warmer than adjacent lighter coloured soils because of the temperature modifying effect of the moisture, in fact they may be cooler (Pandey, 1997). The alpine sites of the resent study has soil colour varying from dark yellowish brown/yellowish brown to brown at different depths. Likewise, at the moraine sites, the soil colour was dark grayish brown/grayish brown to brown. The dark coloured soils of the moraine and alpine sites having high humus contents absorb more heat than light coloured soils. Therefore, the dark soils hold more water. Water requires relatively large amount of heat than the soil minerals to raise its temperature and it also absorbs considerable heat for evaporation. At all sites, dark colour of soil was found due to high organic contents by the addition of litter. Soil texture is an important modifying factor in relation to the proportion of precipitation that enters the soil and is available to plants (Pandey, 1997). Texture refers to the proportion of sand, silt, and clay in the soil. Sandy soil is light or coarse-textured, whereas, the clay soils are heavy or fine-textured. Sand holds less moisture per unit volume, but permits more rapid percolation of precipitated water than silt and clay. Clay tends to increase the water-holding capacity of the soil. Loamy soils have a balanced sand, silt, and clay composition and are thus superior for plant growth (Pidwirny, 2004). Soil of the alpine zone of Dokriani Bamak was silty predominated by clay and loam, whereas the soil of moraine zone was silty predominated by sand and clay. There is a close relationship between atmospheric temperature and soil temperature. The high organic matter (humus) help in retaining more soil water. During summers, high radiations with greater insulation period enhance the atmospheric temperature resulted in the greater evaporation of soil water. In the monsoon months (July-August) the high rainfall increased soil moisture under relative atmospheric and soil temperature due to cloud-filter radiations (Pandey, 1997). Owing to September rainfall, atmospheric and soil temperatures decreased. The soil moisture is controlled by atmospheric temperature coupled with absorption of water by plants. During October, occasional rainfall and strong cold winds lower down the atmospheric temperature further. The soil temperature remains more or less intact from the outer influence due to a slight frost layer as well as vegetation cover. Soil temperature was recorded low at the moraine sites than the alpine sites. During May, insulation period in creases with increase in the atmospheric and soil temperature and it decreases during rainfall. The increasing temperature influences soil moisture adversely and an equilibrium is attained only after the first monsoon showers in the month of June which continued till August. Donahue et al. (1987) stated that no levelled land with a slope at right angle to the Sun would receive more heat per soil area and will warm faster than the flat surface. The soil layer impermeable to moisture have been cited as the reason for treelessness in part of the tropics, wherein its absence savanna develops (Beard, 1953). The resulting water logging of soil during the rainy season creates conditions not suitable for the growth of trees capable of surviving the dry season. The water holding capacity of the soil is determined by several factors. Most important among these are soil texture or size of particles, porosity and the amount of expansible organic matter and colloidal clay (Pandey, 1997). Water is held as thin film upon the surface of the particles and runs together forming drops in saturated soils, the amount necessarily increases with an increase in the water holding surface. Organic matter affects water contents directly by retaining water in large amount on the extensive surfaces of its colloidal constituents and also by holding it like a sponge in its less decayed portion. It also had an indirect effect through soil structure. Sand particles loosely cemented together by it, hence, percolation is decreased and water-holding capacity increased. Although fine textured soil can hold more water and thus more total water holding capacity but maximum available water is held in moderate textured soil. Porosity in soil consists of that portion of the soil volume not occupied by solids, either mineral or organic material. Under natural conditions, the pore spaces are occupied at all times by air and water. Pore spaces are irregular in shape in sand than the clay. The most rapid water and air movement is observed in sands than strongly aggregated soils. The pH of alpine sites ranged from 4.4 to 5.3 and it ranged from 4.8 to 6.1 in moraine sites of Dokriani Bamak. It indicated the acidic nature of the soil. The moraine sites were more acidic than the alpine sites. Acidity of soil is exhibited due to the presence of different acids. The organic matter and nitrogen contents inhibit the acidity of soil. The present observations pertaining to the soil pH (4.4 to 5.3 and 4.8 to 6.1) were more or less in the same range as reported for other meadows and moraine zones. Ram (1988) reported pH from 4.0-6.0 in Rudranath and Gaur (2002) on Chorabari. These pH ranges are lower than the oak and pine forests of lower altitudes of Himalayan region as observed by Singh and Singh, 1987 (pH:6.0-6.3). Furthermore, pH increased with depth. Bliss (1963) analyzed that in all types of soil, pH was low in upper layers (4.0-4.30) and it increased (4.6-4.9) in lower layer at New Hampshire due to reduction in organic matter. Das et al. (1988) reported the simil ar results in the sub alpine areas of Eastern Himalayas. All these reports support the present findings on Dokriani Bamak strongly. A potent acidic soil is intensively eroded and it has lower exchangeable cation, and possesses least microbial activity (Donahue et al., 1987). Misra et al., 1970 also observed higher acidity in the soil in the region where high precipitation results leaching. Koslowska (1934) demonstrated that when plants were grown under conditions of known pH, they make the culture medium either more acidic or alkaline and that this property differed according to the species. Soil properties may ch Soil Analysis of the Himalayan Mountain System Soil Analysis of the Himalayan Mountain System Chapter- 4 ABIOTIC ENVIRONMENTAL VARIABLES OF MORAINIC AND ALPINE ECOSYSTEMS Global warming/ enhanced greenhouse effect and the loss of biodiversity are the major environmental issues around the world. The greatest part of the worlds population lives in the tropical regions. Mountainous regions in many cases provide favourable conditions for water supply due to orographically enhanced convective precipitation. Earth scientists are examining ancient periods of extreme warmth, such as the Miocene climatic optimum of about 14.5-17 million years ago. Fossil floral and faunal evidences indicate that this was the warmest time of the past 35 million years; a mid-latitude temperature was as much as 60C higher than the present one. Many workers believe that high carbon dioxide levels, in combination with oceanographic changes, caused Miocene global warming by the green house effect. Pagani et al. (1999) present evidence for surprisingly low carbon dioxide levels of about 180-290ppm by volume throughout the early to late Miocene (9-25 million years). They concluded tha t green house warming by carbon dioxide couldnt explain Miocene warmth and other mechanism must have had a greater influence. Carbon dioxide is a trace gas in the Earths atmosphere, which exchanges between carbon reservoirs in particularly the oceans and the biosphere. Consequently atmospheric concentration shows temporal, local and regional fluctuations. Since the beginning of industrialization, its atmospheric concentration has increased. The 1974 mean concentration of atmospheric CO2 was about 330 ÃŽ ¼mol mol-1 (Baes et. al., 1976), which is equivalent to 2574 x 1015 g CO2 702.4 x 1015 C assuming 5.14 x 1021 g as the mass of the atmosphere. This value is significantly higher than the amount of atmospheric CO2 in 1860 that was about 290 ÃŽ ¼mol mol-1 (617.2 x 1015 g). Precise measurements of the atmospheric CO2 concentration started in 1957 at the South Pole, Antarctica (Brown and Keeling, 1965) and in 1958 at Mauna Loa, Hawaii (Pales and Keeling, 1965). Records from Mauna Loa show that the concentration of CO2 in the atmosphere has risen since 1958, from 315 mmol mol-1 to approximately 360 315 mmol mol-1 in 1963 (Boden et al., 1994). From these records and other measurements that began more recently, it is clear that the present rate of CO2 increase ranges between 1.5 and 2.5 mmol mol-1 per annum. In the context of the Indian Himalayan region, the effect of warming is apparent on the recession of glaciers (Valdiya, 1988), which is one of the climatic sensitive environmental indicators, and serves as a measure of the natural variability of climate of mountains over long time scales (Beniston et al., 1997). However no comprehensive long-term data on CO2 levels are available. The consumption of CO2 by photosynthesis on land is about 120 x 1015 g dry organic matter/year, which is equivalent to about 54 x 1015gC/yr (Leith and Whittaker, 1975). Variations in the atmospheric CO2 content on land are mainly due to the exchange of CO2 between vegetation and the atmosphere (Leith, 1963; Baumgartner, 1969). The process in this exchange is photosynthesis and respiration. The consumption of CO2 by the living plant material is balanced by a corresponding production of CO2 during respiration of the plants themselves and from decay of organic material, which occurs mainly in the soil through the activity of bacteria (soil respiration). The release of CO2 from the soil depends on the type, structure, moisture and temperature of the soil. The CO2 concentration in soil can be 1000 times higher than in air (Enoch and Dasberg, 1971). Due to these processes, diurnal variations in the atmospheric CO2 contents on ground level are resulted. High mountain ecosystems are considered vulnerable to climate change (Beniston, 1994; Grabherr et al., 1995; Theurillat and Guisan, 2001). The European Alps experienced a 20 C increase in annual minimum temperatures during the twentieth century, with a marked rise since the early 1980s (Beniston et al., 1997). Upward moving of alpine plants has been noticed (Grabherr et al., 1994; Pauli et al., 2001), community composition has changed at high alpine sites (Keller et al., 2000), and treeline species have responded to climate warming by invasion of the alpine zone or increased growth rates during the last decades (Paulsen et al., 2000). Vegetation at glaciers fronts is commonly affected by glacial fluctuations (Coe, 1967; Spence, 1989; Mizumo, 1998). Coe (1967) described vegetation zonation, plant colonization and the distribution of individual plant species on the slopes below the Tyndall and Lewis glaciers. Spence (1989) analyzed the advance of plant communities in response to the re treat of the Tyndall and Lewis glaciers for the period 1958- 1984. Mizumo (1998) addressed plant communities in response to more recent glacial retreat by conducting field research in 1992, 1994, 1996 and 1997. The studies illustrated the link between ice retreat and colonization near the Tyndall and Lewis glaciers. The concern about the future global climate warming and its geoecological consequences strongly urges development and analysis of climate sensitive biomonitoring systems. The natural elevational tree limit is often assumed to represent an ideal early warming line predicted to respond positionally, structurally and compositionally even to quite modest climate fluctuations. Several field studies in different parts of the world present that climate warming earlier in the 20th century (up to the 1950s 1960s) has caused tree limit advances (Kullman, 1998). Purohit (1991) also reported upward shifting of species in Garhwal Himalaya. The Himalayan mountain system is a conspicuous landmass characterised by its unique crescent shape, high orography, varied lithology and complex structure. The mountain system is rather of young geological age through the rock material it contains has a long history of sedimentation, metamorphism and magmatism from Proterozoic to Quaternary in age. Geologically, it occupies a vast terrain covering the northern boundary of India, entire Nepal, Bhutan and parts of China and Pakistan stretching from almost 720 E to 960 E meridians for about 2500 km in length. In terms of orography, the geographers have conceived four zones in the Himalaya across its long axis. From south to north, these are (i) the sub-Himalaya, comprising low hill ranges of Siwalik, not rising above 1,000 m in altitude; (ii) the Lesser Himalaya, comprising a series of mountain ranges not rising above 4000 m in altitude; (iii) the Great Himalaya, comprising very high mountain ranges with glaciers, rising above 6,000 m i n altitude and (iv) the Trans-Himalaya, Comprising very high mountain ranges with glaciers. The four orographic zones of the Himalaya are not strictly broad morpho-tectonic units though tectonism must have played a key role in varied orographic attainments of different zones. Their conceived boundaries do not also coincide with those of litho-stratigraphic or tectono-stratigraphic units. Because of the involvement of a large number of parameters of variable nature, the geomorphic units are expected to be diverse but cause specific, having close links with mechanism and crustal movements (Ghosh, et al., 1989). Soil is essential for the continued existence of life on the planet. Soil takes thousands of years to form and only few years to destroy their productivity as a result of erosion and other types of improper management. It is a three dimensional body consisting of solid, liquid and gaseous phase. It includes any part of earths crust, which through the process of weathering and incorporation of organic matter has become capable in securing and supporting plants. Living organisms and the transformation they perform have a profound effect on the ability of soils to provide food and fiber for expanding world population. Soils are used to produce crops, range and timber. Soil is basic to our survival and it is natures waste disposal medium and it serves as habitats for varied kinds of plants, birds, animals, and microorganisms. As a source of stores and transformers of plant nutrients, soil has a major influence on terrestrial ecosystems. Soil continuously recycles plant and animal remains , and they are major support systems for human life, determining the agricultural production capacity of the land (Anthwal, 2004). Soil is a natural product of the environment. Native soil forms from the parent material by action of climate (temperature, wind, and water), native vegetation and microbes. The shape of the land surface affects soil formation. It is also affected by the time it took for climate, vegetation, and microbes to create the soil. Soil varies greatly in time and space. Over time-scales relevant to geo-indicators, they have both stable characteristics (e.g. mineralogical composition and relative proportions of sand, silt and clay) and those that respond rapidly to changing environmental conditions (e.g. ground freezing). The latter characteristics include soil moisture and soil microbiota (e.g. nematodes, microbes), which are essential to fluxes of plant nutrients and greenhouse gases (Peirce, and Larson, 1996.). Most soils resist short-term climate change, but some may undergo irreversible change such as lateritic hardening and densification, podsolization, or large-scale erosion. Chemical degradation takes place because of depletion of soluble elements through rainwater leaching, over cropping and over grazing, or because of the accumulation of salts precipitated from rising ground water or irrigation schemes. It may also be caused by sewage containing toxic metals, precipitation of acidic and other airborne contaminants, as well as by persistent use of fertilizers and pesticides (Page et al., 1986). Physical degradation results from land clearing, erosion and compaction by machinery (Klute, 1986). The key soil indicators are texture (especially clay content), bulk density, aggregate stability and size distribution, and water-holding capacity (Anthwal, 2004). Soil consists of 45% mineral, 25% water, 25% air and 5% organic matter (both living and dead organisms). There are thousands of different soils throughout the world. Soil are classified on the basis of their parent material, texture, structure, and profile There are five key factors in soil formation: i) type of parent material; ii) climate; iii) overlying vegetation; iv) topography or slope; and v) time. Climate controls the distribution of vegetation or soil organisms. Together climate and vegetation/soil organisms often are called the active factors of soil formation (genesis). This is because, on gently undulating topography within a certain climatic and vegetative zone a characteristic or typical soil will develop unless parent material differences are very great (Anthwal, 2004). Thus, the tall and mid-grass prairie soils have developed across a variety of parent materials. Soil structure comprises the physical constitution of soil material as expressed by size, shape, and arrangement of solid particles and voids (Jongmans et al., 2001). Soil structure is an important soil property in many clayey, agricultural soils. Physical and chemical properties and also the nutrient status of the soil vary spatially due to the changing nature of the climate, parent material, physiographic position and vegetation (Behari et al., 2004). Soil brings together many ecosystem processes, integrating mineral and organic processes; and biological, physical and chemical processes (Arnold et al., 1990, Yaalon 1990). Soil may respond slowly to environmental changes than other elements of the ecosystem such as, the plants and animal do. Changes in soil organic matter can also indicate vegetation change, which can occur quickly because of climatic change (Almendinger, 1990). In high altitudes, soils are formed by the process of solifluction. Soils on the slopes above 300 are generally shallow due to erosion and mass wasting processes and usually have very thin surface horizons. Such skeletal soils have median to coarse texture depending on the type of material from which they have been derived. Glacial plants require water, mineral resources and support from substrate, which differ from alpine and lower altitude in many aspects. The plant life gets support by deeply weathered profile in moraine soils, which develops thin and mosaic type of vegetation. Most of the parent material is derived by mechanical weathering and the soils are rather coarse textured and stony. Permafrost occurs in many of the high mountains and the soils are typically cold and wet. The soils of the moraine region remain moist during the summer because drainage is impeded by permafrost (Gaur, 2002). In general, the north facing slopes support deep, moist and fertile soils. The south facing slopes, on the other hand, are precipitous and well exposed to denudation. These soils are shallow, dry and poor and are often devoid of any kind of regolith (Pandey, 1997). Based on various samples, Nand et al., (1989) finds negative correlation between soil pH and altitude and argues that decrease in pH with the increase in elevation is possibly accounted by high rainfall which facilitated leaching out of Calcium and Magnesium from surface soils. The soils are invariably rich in Potash, medium in Phosphorus and poor in Nitrogen contents. However, information on geo-morphological aspects, soil composition and mineral contents of alpine and moraine in Garhwal Himalaya are still lacking. Present investigation was aimed to carry out detail observations on soil composition of the alpine and moraine region of Garhwal Himalaya. 4.1. OBSERVATIONS As far as the recordings of abiotic environmental variables of morainic and alpine ecosystems of Dokriani Bamak are concerned, the atmospheric carbon dioxide and the physical and chemical characteristics of the soil were recorded under the present study. As these are important for the present study. 4.1.1. Atmospheric Carbon Dioxide Diurnal variations in the atmospheric CO2 were recorded at Dokriani Bamak from May 2005- October 2005. Generally the concentration of CO2 was higher during night and early morning hours (0600-0800) and lower during daytime. However, there were fluctuations in the patterns of diurnal changes in CO2 concentration on daily basis. In the month of May 2005, carbon dioxide concentration ranged from a minimum of 375Â µmol mol-1 to a maximum of 395Â µmol mol-1. When the values were averaged for the measurement days the maximum and minimum values ranged from 378Â µmol mol-1 to 388Â µmol mol-1. A difference of 20Â µmol mol-1 was found between the maximum and minimum values recorded for the measurement days. When the values were averaged, a difference of 10Â µmol mol-1 was observed between maximum and minimum values. During the measurement period, CO2 concentrations varied from a minimum of 377ÃŽ ¼mol mol-1 at 12 noon to a maximum of 400ÃŽ ¼mol mol-1 at 0800 hrs in the month of June, 2005. When the CO2 values were averaged for 6 days, the difference between the minimum and maximum values was about 23ÃŽ ¼mol mol-1. In the month of July, levels of carbon dioxide concentrations ranged from a minimum of 369ÃŽ ¼mol mol-1 to a maximum of 390ÃŽ ¼mol mol-1. When the values of the carbon dioxide concentrations for the measuring period were averaged, the difference between the minimum and maximum values was about 21ÃŽ ¼mol mol-1. Carbon dioxide concentration ranged from a minimum of 367ÃŽ ¼mol mol-1 to a maximum of 409ÃŽ ¼mol mol-1 during the month of August. When the values of carbon dioxide were averaged for the measurement days, the difference in the minimum and maximum values was about 42ÃŽ ¼mol mol-1. During the measurement period (September), CO2 concentrations varied from a minimum of 371ÃŽ ¼mol mol-1 at 12 noon to a maximum of 389ÃŽ ¼mol mol-1 at 0600 hrs indicating a difference of 18ÃŽ ¼mol mol-1 between the maximum and minimum values. When the values of the measurement days were averaged the minimum and maximum values ranged from 375ÃŽ ¼mol mol-1 to 387ÃŽ ¼mol mol-1 and a difference of 12ÃŽ ¼mol mol-1 was recorded. During the month of October, carbon dioxide levels ranged from a minimum of 372ÃŽ ¼mol mol-1 at 1400 hrs to a maximum of 403ÃŽ ¼mol mol-1 at 2000 hrs indicating a difference of 31ÃŽ ¼mol mol-1. When the values were averaged, the carbon dioxide levels ranged from a minimum of 376ÃŽ ¼mol mol-1 to a maximum of 415ÃŽ ¼mol mol-1.A difference in the minimum and maximum values was found to be 39Â µmol mol-1 when the values were averaged for the measurements days. In the growing season (May-October) overall carbon dioxide concentration was recorded to be highest in the month of June and seasonally it was recorded highest during the month of October 4.1.2. A. Soil Physical Characteristics of Soil Soil Colour and Texture Soils of the study area tend to have distinct variations in colour both horizontally and vertically (Table 4.1). The colour of the soil varied with soil depth. It was dark yellowish brown at the depth of 10-20cm, 30-40cm of AS1 and AS2, brown at the depth of 0-10cm of AS1 and AS2 and yellowish brown at the depths of 20-30cm, 40-50cm, 50-60cm of AS1 and AS2). Whereas the soil colour was grayish brown at the depths of 0-10cm, 30-40cm, 50-60cm of MS1 and MS2, dark grayish brown at the depths of 10-20cm, 20-30cm of MS1 and MS2 and brown at the depth of 40-50cm of both the moraine sites (MS1 and MS2). Soil texture is the relative volume of sand, silt and clay particles in a soil. Soils of the study area had high proportion of silt followed by sand and clay (Table 4.2). Soil of the alpine sites was identified as silty loam category, whereas, the soil of the moraine was of silty clayey loam category. Soil Temperature The soil temperature depends on the amount of heat reaching the soil surface and dissipation of heat in soil. Figure 4.2 depicts soil temperature at all the sites in the active growth period. A maximum (13.440C) soil temperature was recorded during the month of July and minimum (4.770C) during the month of October at AS1. The soil temperature varied between 5.10C being the lowest during the month of October to 12.710C as maximum during the month of August at AS2. Soil temperature ranged from 3.240C (October) to 11.210C (July) at MS1. However, the soil temperature ranged from 3.40C (October) to 12.330C (July) at MS2. Soil Moisture (%) Moisture has a big influence on soils ability to compact. Some soils wont compact well until moisture is 7-8%. Â  Likewise, wet soil also doesnt compact well. The mean soil water percentage (Fig. 4.3) in study area fluctuated between a maximum of 83% (AS1) to a minimum of 15% (AS2). The values of soil water percentage ranged from a minimum of 8% (MS2) to a maximum of 80% (MS1). Soil water percentage was higher in the month of July at AS1 and during August at MS1 (. During the month of June, soil water percentage was recorded minimum in the lower depth (50-60cm) at both the sites. Water Holding Capacity (WHC) The mean water holding capacity of the soil varied from alpine sites to moraine sites (Table 4.4). It ranged from a maximum of 89.66% (August) to a minimum of 79.15% (May) at AS1. The minimum and maximum values at AS2 were 78.88% (May) to 89.66% (August), respectively. The maximum WHC was recorded to be 84.61 % during the month of September on upper layer (0-10 cm) at MS1 and minimum 60.36% during the month of May in the lower layer (50-60cm) at MS1. At MS2, WHC ranged from 60.66% (May) to 84.61% (September). However, maximum WHC was recorded in upper layers at both the sites of alpine and moraine. Soil pH The soil pH varied from site to site during the course of the present study (Table 4.5). Mean pH values of all the sites are presented in Figure 4.4 The soil of the study area was acidic. Soil of the moraine sites was more acidic than that of the alpine sites. Soil pH ranged from 4.4 to 5.3 (AS1), 4.5 to 5.2 (AS2), 4.9 to 6.1 (MS1) and 4.8 to 5.7 (MS2). 4.1.2 B. Chemical Characteristics of Soil Organic Carbon (%): Soil organic carbon (SOC) varied with depths and months at both the alpine and moraine sites (Table 4.6). High percentage of organic carbon was observed in the upper layer of all sites during the entire period of study. Soil organic C decreased with depth and it was lowest in lower layers at all the sites. Soil organic carbon was maximum (5.1%) during July at AS1 because of high decomposition of litter, while it was minimum (4.2%) during October due to high uptake by plants in the uppermost layer (0-10 cm). A maximum (5.0%) SOC was found during the month of July and minimum (4.1%) during October at AS2. At the moraine sites, maximum (3.58%, 3.73%) SOC was found during June and minimum (1.5% and 1.9%) during August at MS1 and MS2 respectively. Phosphorus (%): A low amount of phosphorus was observed from May to August which increased during September and October. The mean phosphorus percentage ranged from 0.02 Â ± 0.01 to 0.07 Â ± 0.03 at AS1 and AS2. It was 0.03Â ±0.01 to 0.03Â ±0.02 at MS1 and MS2. Maximum percentage of phosphorus was estimated to be 0.09 in the uppermost layer (0-10 cm) during October at AS1. The lower layer (40-50 cm) of soil horizon contained a minimum of 0.01% phosphorus during September at AS1 and AS2. In the moraine sites (MS1 and MS2), maximum phosphorus percentage of 0.03 Â ±0.01 was estimated in the upper layers (0-10, 10-20, 20-30 cm) while it was found to be minimum (0.02Â ±0.01) in the lower layers (30-40 cm). Overall, a decreasing trend in amount of phosphorus was found with depth in alpine as well as moraine sites Potassium (%): A decline in potassium contents was also observed with declining depth during the active growing season. Maximum value of potassium was found in the uppermost layer (0-10 cm) at all the sites. The mean values ranged from 0.71Â ±0.02 to 46Â ±0.06 at AS1 while it was 0.71Â ±0.02 to 0.47Â ±0.05 at AS2. In the moraine sites the values ranged from a minimum of 0.33 Â ±0.06 to a maximum of 0.59Â ±0.05 in the MS1 and from 0.59Â ±0.05 to 0.32Â ±0.06 at MS2. In the upper layer of soil horizon (0-10 cm), maximum value of 0.74 %, 0.75% of potassium was observed during the month of July at AS1 and AS2. While the values were maximum in the month of October at moraine sites MS1 and MS2 having 0.66% and 0.65% respectively Nitrogen (%): Highest percentage of nitrogen was found in the upper layers at all the sites. Maximum percentage of nitrogen were found during the month of July-August (0.25%, 0.25 and 0.26%, 0.25%) at AS1 and AS2, respectively. Maximum values of 0.18% and 0.15% respectively were found during the month of June at the moraine sites MS1 and MS2. The nitrogen percentage ranged from 0.23Â ±0.02 to 0.04Â ±0.01% at AS1. However, it ranged from a minimum of 0.05Â ±0.01 to 0.24Â ±0.02% at AS2. The nitrogen percentage ranged from a minimum of 0.03Â ±0.01, 0.02Â ±0.04% to a maximum of 12Â ±0.03, 13Â ±0.01%, respectively at MS1 and MS2 Overall, a decreasing trend was noticed in the nitrogen percentage with depth at both the alpine and moraine sites. 4.2. DISCUSSION Soil has a close relationship with geomorphology and vegetation type of the area (Gaur, 2002). Any change in the geomorphological process and vegetational pattern influences the pedogenic processes. However, variability in soil is a characteristic even within same geomorphic position (Gaur, 2002). Jenney (1941) in his discussion on organisms as a soil forming factors treated vegetation both as an independent and as dependent variable. In order to examine the role of vegetation as an independent variable, it would be possible to study the properties of soil as influenced by vegetation while all other soil forming factors such as climate, parent material, topography and time are maintaining at a particular constellation. Many soil properties may be related to a climatic situation revealing thousand years ago (e.g. humid period during late glacial or the Holocene in the Alps and Andes (Korner, 1999). The soil forming processes are reflected in the colour of the surface soil (Pandey, 1997). The combination of iron oxides and organic content gives many soil types a brown colour (Anthwal, 2004). Many darker soils are not warmer than adjacent lighter coloured soils because of the temperature modifying effect of the moisture, in fact they may be cooler (Pandey, 1997). The alpine sites of the resent study has soil colour varying from dark yellowish brown/yellowish brown to brown at different depths. Likewise, at the moraine sites, the soil colour was dark grayish brown/grayish brown to brown. The dark coloured soils of the moraine and alpine sites having high humus contents absorb more heat than light coloured soils. Therefore, the dark soils hold more water. Water requires relatively large amount of heat than the soil minerals to raise its temperature and it also absorbs considerable heat for evaporation. At all sites, dark colour of soil was found due to high organic contents by the addition of litter. Soil texture is an important modifying factor in relation to the proportion of precipitation that enters the soil and is available to plants (Pandey, 1997). Texture refers to the proportion of sand, silt, and clay in the soil. Sandy soil is light or coarse-textured, whereas, the clay soils are heavy or fine-textured. Sand holds less moisture per unit volume, but permits more rapid percolation of precipitated water than silt and clay. Clay tends to increase the water-holding capacity of the soil. Loamy soils have a balanced sand, silt, and clay composition and are thus superior for plant growth (Pidwirny, 2004). Soil of the alpine zone of Dokriani Bamak was silty predominated by clay and loam, whereas the soil of moraine zone was silty predominated by sand and clay. There is a close relationship between atmospheric temperature and soil temperature. The high organic matter (humus) help in retaining more soil water. During summers, high radiations with greater insulation period enhance the atmospheric temperature resulted in the greater evaporation of soil water. In the monsoon months (July-August) the high rainfall increased soil moisture under relative atmospheric and soil temperature due to cloud-filter radiations (Pandey, 1997). Owing to September rainfall, atmospheric and soil temperatures decreased. The soil moisture is controlled by atmospheric temperature coupled with absorption of water by plants. During October, occasional rainfall and strong cold winds lower down the atmospheric temperature further. The soil temperature remains more or less intact from the outer influence due to a slight frost layer as well as vegetation cover. Soil temperature was recorded low at the moraine sites than the alpine sites. During May, insulation period in creases with increase in the atmospheric and soil temperature and it decreases during rainfall. The increasing temperature influences soil moisture adversely and an equilibrium is attained only after the first monsoon showers in the month of June which continued till August. Donahue et al. (1987) stated that no levelled land with a slope at right angle to the Sun would receive more heat per soil area and will warm faster than the flat surface. The soil layer impermeable to moisture have been cited as the reason for treelessness in part of the tropics, wherein its absence savanna develops (Beard, 1953). The resulting water logging of soil during the rainy season creates conditions not suitable for the growth of trees capable of surviving the dry season. The water holding capacity of the soil is determined by several factors. Most important among these are soil texture or size of particles, porosity and the amount of expansible organic matter and colloidal clay (Pandey, 1997). Water is held as thin film upon the surface of the particles and runs together forming drops in saturated soils, the amount necessarily increases with an increase in the water holding surface. Organic matter affects water contents directly by retaining water in large amount on the extensive surfaces of its colloidal constituents and also by holding it like a sponge in its less decayed portion. It also had an indirect effect through soil structure. Sand particles loosely cemented together by it, hence, percolation is decreased and water-holding capacity increased. Although fine textured soil can hold more water and thus more total water holding capacity but maximum available water is held in moderate textured soil. Porosity in soil consists of that portion of the soil volume not occupied by solids, either mineral or organic material. Under natural conditions, the pore spaces are occupied at all times by air and water. Pore spaces are irregular in shape in sand than the clay. The most rapid water and air movement is observed in sands than strongly aggregated soils. The pH of alpine sites ranged from 4.4 to 5.3 and it ranged from 4.8 to 6.1 in moraine sites of Dokriani Bamak. It indicated the acidic nature of the soil. The moraine sites were more acidic than the alpine sites. Acidity of soil is exhibited due to the presence of different acids. The organic matter and nitrogen contents inhibit the acidity of soil. The present observations pertaining to the soil pH (4.4 to 5.3 and 4.8 to 6.1) were more or less in the same range as reported for other meadows and moraine zones. Ram (1988) reported pH from 4.0-6.0 in Rudranath and Gaur (2002) on Chorabari. These pH ranges are lower than the oak and pine forests of lower altitudes of Himalayan region as observed by Singh and Singh, 1987 (pH:6.0-6.3). Furthermore, pH increased with depth. Bliss (1963) analyzed that in all types of soil, pH was low in upper layers (4.0-4.30) and it increased (4.6-4.9) in lower layer at New Hampshire due to reduction in organic matter. Das et al. (1988) reported the simil ar results in the sub alpine areas of Eastern Himalayas. All these reports support the present findings on Dokriani Bamak strongly. A potent acidic soil is intensively eroded and it has lower exchangeable cation, and possesses least microbial activity (Donahue et al., 1987). Misra et al., 1970 also observed higher acidity in the soil in the region where high precipitation results leaching. Koslowska (1934) demonstrated that when plants were grown under conditions of known pH, they make the culture medium either more acidic or alkaline and that this property differed according to the species. Soil properties may ch