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一、世界林业现状世界的森林,历经沧桑,变化多端.在人类诞生的时代,世界上2/3的陆地生长着茂密的森林,但由于长期以来,人们只致力于森林的采伐利用,加之近百年来战争等原因的破坏,造成了世界森林资源日渐枯竭的严重危机.据联合国粮农组织最近统计,至1978—1979年世界森林面积只剩下40.53亿公顷,每人平均为0.8公顷.而且分布很不均匀,太平洋地区人平为4.1公顷,而亚洲为最少,每人只有0.2公顷.全世界郁闭林蓄积量估计为3100亿立方米,世界人平均83立方米.据我国1975年林调资料,我国森林面积为1.2189亿公顷,占国土面积的12.7%,远低于世界平均郁闭林覆盖率22%的水平.
First, the world’s forestry The status of the world’s forests, through the vicissitudes of life, changing.In the era of human beings, 2/3 of the world’s land with dense forests, but because people have long been committed to the harvesting of forests, coupled with the recent According to the latest statistics by the UN Food and Agriculture Organization, only 4,403 million hectares of forest area were found in 1978-1979, with an average of 0.8 hectares per person. Very uneven, the Pacific region is flat 4.1 hectares, while Asia is the least, only 0.2 hectares per person .Cultivation of the world is estimated to be 310 billion cubic meters, the world average of 83 cubic meters. According to China’s 1975 Lin According to the data, China’s forest area is 121.89 million hectares, accounting for 12.7% of the total land area, much lower than the world average of 22% of the canopy cover.