Replenishment of forests
Very thick forest
Earlier many parts of the earth had lush – green forests which contained a large number of plants and trees. The forest trees a major role in maintaining the water cycle in nature. The forest trees give out a large amount of water vapour to the atmosphere through the process of transpiration (evaporation from leaves). This water vapour helps in the formations of rain clouds. Thus, forest trees help in bringing sufficient rain – fall on the earth, which causes more trees to grow.
Now, when forests are cut indiscriminately, than number of trees in the forest decreases. Due to the decrease in the number of trees, transpiration decreases and hence the rain fall in the area also decreases. Also, in light of lesser downpour – fall, less number of trees develop around there. This procedure is rehashed and the region which was previously a thick woods might at last turn into a desert, having no vegetation by any means. The backwoods additionally help in the protection of soil. The reduction in the number of plants and trees in area washes away the top soil of the land which is rich in organic number matter and other plant nutrients. This is on account of in the vicinity of plants and trees, the top soil is held solidly by the plant roots and is not permitted to washed away. In any case, without trees and plants, the exceedingly prolific top soil is lost through water disintegration and in addition through wind disintegration. The plant establishes likewise help in the retention of a portion of the downpour water in the dirt. The prevention of soil erosion and absorption of water in soil prevent the occurrence of floods in that area.
Indiscriminate cutting down of forests can lead to the following adverse effects-
1) It reduces the rain – fall in that area causing lesser trees to grow, and the forest may ultimately become a desert. 2) It leads to the loss of fertile ' topsoil' through wind erosion and water erosion. 3) It leads to frequent floods in the area. 4) It leads to the destruction of natural habitats (natural living places) of wild animals which may lead to their extinction.
Let us see why the forest trees are cut. The forest trees are cut or failed in large numbers because of the following reasons-
A) The forest wood is used as a fuel. B) The forest wood is used for construction purposes like making doors and windows of a house and for making house – hold furniture. C) The forest wood is used in industry for the manufacture of paper.
It should be noted that trees keep on growing all the time in forest by natural process. In general, there is a certain natural rate at which trees grow in the forests which depends on the type of soil and climatic conditions like rain – fall at that place. This is on account of in the vicinity of plants and trees, the top soil is held solidly by the plant roots and is not permitted to washed away. In any case, without trees and plants, the exceedingly prolific top soil is lost through water disintegration and in addition through wind disintegration. The plant establishes likewise help in the retention of a portion of the downpour water in the dirt. The replenishment of cut down forests by planting more trees is necessary to maintain the water cycle at that place and hence bring in sufficient rains. The replenishment of forests is also necessary to prevent the loss of highly fertile top soil through wind and water erosion; to prevent the occurring of floods and to conserve wild animals.