Deforestation is a critical problem not only because it damaged our natural environment that cannot be replaced overnight, but it also lead to far-reaching side effects. Deforestation is one of the major factors contributing to varies of environmental problem, like desertification, soil erosion, flooding, mudslides, siltation and sedimentation, habitat destruction and species extinction. They are accompanied by health, economic and hardship brought about by

	Men clear forests by cutting or burning.
	Resulting bare is left for the growing of crops, building of roads, houses and factories.
	Wood form the cut trees are used for papermaking, building and as fuels.