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一、前言长白山林区位于吉林省东南部,是我国的主要木材产区之一。它主要分布在通化地区东部延边地区西部和吉林地区南部,大体在126—129°E,41—43°N的范围。建国后对长白山林区的森林资源进行了开采。50年代期各间地由于森林资源条件好,虽采伐量大但林地面积减少并不十分显著,60年代后随着资源条件的变化,采伐量的加大,加之林区人口剧增,林地面积则骤然减少。以松江河林业局为例,1971——1975年的采伐面积比前5年多1倍,比1958——1962年多近5倍,1958——1978年总采
I. Introduction Changbai Mountain Forest is located in the southeast of Jilin Province and is one of the major timber producing areas in China. It is mainly distributed in the western part of Yanbian area in the eastern part of Tonghua area and the southern part of Jilin area, roughly in the range of 126-129 ° E and 41-43 ° N. After the founding of the Changbai Mountain forest resources for mining. In the 1950s, due to the good conditions of forest resources, although the volume of logging was large but the area of forestland decreased not so obviously. With the change of resource conditions and the increase of logging after the 1960s, Then suddenly reduced. Taking Songjianghe Forestry Bureau as an example, the harvesting area in 1971-1975 was 1 times more than in the previous 5 years, nearly 5 times more than in 1958-1962, and the total mining area in 1958-1978