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我国森林面积为12,186万公顷,占国土总面积的12.7%,属于少林国家。在现有林中天然林面积占77%,天然林在我国现有林中居主体地位。森林是陆地生态系的主要成份,我国生态环境的变化与森林资源的消长休戚相关,目前维持国土生态平衡的,主要依赖于现有的天然林。我国森林总蓄积量原始林占75%,天然次生林占23%。原始林中成过熟林木较多,是目前术材生产的主要基地,天然次生林近熟木和中龄木较多,是近期木材生产后备基地,人工林目前尚处于中、幼龄阶段,木材蓄积量仅占2%,在本世纪内不可能为我国经济建设提供大量木材。从我国森林资源现状来看,无论是保持
China’s forest area is 121.86 million hectares, accounting for 12.7% of the total land area, belonging to Shaolin countries. In the existing forest, the area of natural forest accounts for 77% of the total. The natural forest is the dominant forest in our country. Forest is the main component of terrestrial ecosystem. The change of ecological environment in China is closely related to the growth and decline of forest resources. At present, maintaining the ecological balance of the country depends mainly on the existing natural forest. The total volume of forest in China accounted for 75% of the original forest, natural secondary forest accounted for 23%. There are more mature trees in the original forest, which is the main base of the current wood production. The natural secondary forest is near mature and middle-aged wood, which is the reserve base of recent timber production. The plantation is still in the middle and young age, Only 2%, it is impossible to provide a large amount of timber for the economic construction of our country within this century. From the current situation of China’s forest resources, whether it is maintained