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皆伐迹地采用火烧清林的方法,早在50年代就曾开始采用。即省劳力又省物力,特别是对森林更新大有好处:①能够充分利用地表面积,加大更新密度。根据上营森林经营局长安林场关门山作业区调查,在皆伐迹地上每公顷内有枝丫67—134堆,占地面积为866—1533平方米;有伐根150—416个,占地面积630—366平方米。如果将伐根和枝丫堆面积加在一起,每公顷内占地面积为15—
The method of burning the Qinglin is used in all areas, and it was used as early as the 1950s. That labor-saving and provincial resources, especially for forest regeneration is greatly beneficial: ① to take full advantage of the surface area, increase the update density. According to the survey conducted by Shangying Forest Management Office at Guanmen Mountain Range in Anlin Farm, there are 67-134 heap per hectare on the clear-cut land, covering an area of 866-1533 square meters; there are 150-416 cutting roots and covers an area of 630-366 square meters. If the cutting root and branch heap area together, each hectare covers an area of 15-