Sunday, November 8, 2009

त्रीस एंड Environmemnt



Trees and the Environment
"The very air we breathe is improved by the presence of trees."
A book by Dr. Seuss illustrates the impact trees have on our environment. In his tale The Lorax, The disappearance of trees bears dire environmental consequences. At the onset of the story the landscape is beautiful and lush with shady groves, clean water, and ample home for wildlife. As the tale progresses and trees are cut down, the environment starts to sour. Animals flee for lack of food and shelter, the air becomes dark and dirty, and the water supply grows stale.
So too, would our environment suffer if we uprooted our own trees. Trees provide shade in summer and shelter in winter. In fact, trees planted around our homes help reduce heating and cooling costs. During summer, trees can block the sun and have a refrigerating effect on us and our homes, and during the winter months, trees can keep us warmer by shielding us from wind and snow.
The very air we breathe is improved by the presence of trees. In order to feed themselves, trees absorb harmful chemicals such as carbon monoxide and in turn give off oxygen. As well, they filter and trap pollutants such as smoke, dust, and ash making our air cleaner.
Where water is concerned, trees not only absorb water - preventing flooding, but also help disperse rainfall over a more even area. As well, by retaining water, trees help reduce the amount of topsoil the runs off into our sewers and streams. Leaves on the ground, keep moisture close to the ground aiding growth and traps chemicals keeping them out of lakes and rivers.
On a larger scale, trees maintain our global environment in ways that we are just beginning to understand. By acting as enormous carbon sinks, trees absorb massive amounts of carbon dioxide from our atmosphere. If trees did not perform this vital function, there would be little to mitigate the effects of global warming caused by the Greenhouse Effect.
Of course trees benefit us not only our physical environment, but also attract birds and other wildlife, making our urban centers a more pleasant place to live. Picture the eerie silence that would befall a city were the song of birds entirely absent.
The Bounty from Trees
"...trees provide life itself."Apple, pear, and orange trees are just a few of the types of trees that provide us with nourishment. Those living in cities do not often view trees as a source of food, but think how bare the produce section of your supermarket would look were there no trees on this earth. In less wealthy nations, governments have staged nation-wide campaigns to encourage its citizens to plant a tree or two on their land. For these people, always having fresh fruit to offer your family and friends is seen as vital. For most of us, the fruit of trees provide pleasurable tastes as well as much needed vitamins, but for others trees provide life itself.In addition to food, trees are also a constant source of medicine for the human race. Consider the ginkgo tree. Dating back more than 300 million years, it is the oldest know species of tree. For centuries the Chinese have used tea made from ginkgo seeds as a cure for respiratory illnesses, such as asthma. In more modern times, ginkgo leaf extract has been used as a treatment for a wide range of aliments such as Alzheimer's and depression. The Native Americans use Aspen bark for reducing fever and fighting influenza. In recent times, the medical community has taken more notice of the natural cures found all around us as herbology continues to grow in popularity. Many people, tired of chemical treatments, turn to trees and plants for assistance.
Trees and Literature
"Rooted in the ground, they reach for the sky."
Research almost any country or culture on this planet and you are guaranteed to find that trees occupy and important place in the literary history of the region. From Christianity's very beginnings the apple tree set the stage for mankind's expulsion from the Garden of Eden. In the Old Babylonian epic of Gilgamesh - written around 2000 B.C. - the Cedar was the dwelling place of the gods. In J.R.R. Tolkien's Lord of the Rings, the Ents are large trees come to life and are, not surprisingly, often of great assistance to the forces of good. All of us can cite examples of the importance of trees in our favorite stories.
On a more philosophical level, trees allow our minds to wander. They occupy such a strong place in our stories because they are near to us and the heavens at the same time. Rooted in the ground, they reach for the sky. They are majestic and complicated. They seem at once friendly, like the trees in our own gardens, and fearful, like the tangled branches of an unwelcoming forest.
Indeed, without trees we would have no paper for our books.
In Conclusion
The importance of trees seems apparent when one tries to imagine a world without them. Cleaner air and water, food for our tables and thoughts, as well as inspiration for our senses are but a few things given to us by trees. If nothing else, they give us an excuse to sit, close our eyes, and listen to the winds rustle though their leaves.
Importance of Trees
Trees one an important part of the Biosphere that exists on earth. They play an essential part in the life of man. Children play under them, and tired travelers refresh themselves in their cool shade. They give us fruit to eat and firewood to burn. We use trees to build houses and furniture's with. If the paper on which your book is printed could tell its own story, it would perhaps tell you that once. it was a tree on some hill slope in a forest. The furniture in your classroom is perhaps made out of trees that once grew in the forest of Assam or Kerala. Trees thus supply us with many of the conveniences of life.
How Trees Support Life
Trees do much more than supply us with the conveniences we have mentioned. They help to support man's life by supplying the atmosphere with oxygen which is essential to life. The oxygen in the air is constantly being used up and turned into carbon dioxide when animals breathe and things burn, carbon dioxide is the food that plants “eat”. The green leaves of trees (in fact of all green plants) absorb this carbon dioxide and with the help of sunlight break it down into carbon and oxygen. The carbon is used 70 make starch, and the oxygen is released in to the air, so replacing the oxygen used up by animals. But for this, animals would soon die for lack of oxygen.
Starch and other carbon compounds made in the green leaves of trees (and of other green plants too) serve as food for animals. The tiny green cells of plants are wonderful laboratories, which produce all the starch in the world. But for this service done by plants all animals would. But for this service done by plants all animal would sooner or larger die for lack of food; they must get all their food either directly from plants or indirectly by eating animals that have fed on plants.
Influence of trees on climate
On a hot day it is often cooler under a tree than inside a building. This is because the leaves of trees breathe out a lot of water vapour, and this helps to cool the air, more or less as a mudpat cools the water in it, in this way forests help to cool the atmosphere and the rain crowds passing through it, so causing rain. Where new forests have been planted, rainfall it known to have increased.
Influence of trees on soil
Trees help to protect the surface soil of the earth and to prevent floods. Our earth has a covering of fine soil at the surface and under the soil lie rocks of various kinds. Nature takes millions of years to form soil 2.5 cms thick. But some times a single heavy shower washes off that much of the valuable surface soil on an open hill slope. This does not happen in forests and other places where there are plenty of trees. The trees stop the tree flow of water and their roots hold the soil together, and so the soil is protected from being washed off. Moreover, forest soil has a way if quickly absorbing water, this helps to prevent sudden floods.
Other values trees
There are many kinds of trees very useful to man. There is the rubber tree growing in Kerala, Assam and Malaya from whose sap we get the rubber which we use for numerous purposes. There are trees such as the eucalyptus and cinchona. Which supply us with medicines. There is the coconut tree, every part of which is useful. In South America there is an interesting tree called the “Cow-Tree” whose sap's used in place of milk.
Why should we plant mean trees
In many parts of India there are not enough trees to supply firewood, and so people are forced to burn cow-dung, which ought to be saved for agricultural purposes. The government wants large numbers of trees to be planted all over the country in order to make good the loss. So, some years ago, the government started an annual festival called. Vanamahatsava or the forest festival. This is an important festival in which we should all take part. Threes are our country's wealth; we must consider it our sacred duty to protect them and to look after them well.