Functions of forest
Local environment
Functions of forest
   The forest refers to the area full of trees, which provides human beings with food, fuel, timber, medicine in the early times. The human civilization has close relationship with the forests which gives the materials of tools, houses, cities and towns, wheels and ships. The forests also cultivate the sense of esthetics. As a kind of regulator, although the shortage of forests is not fatal, it has bad influence on the living environment of human beings.
  Due to the great consumption of the timber, the area of forests on the Earth is becoming smaller and smaller, which causes a lot of environmental problems such as drier and warmer climate, more sandstorms and air pollutions, water and soil erosions. Therefore, the value of forests to environment has become higher. Planting more trees to increase the forest resources has close relationship with the economic, social and environmental benefits of human beings.