随着间伐工作的发展,目前确定间伐强度的方法,逐步由定性间伐转入定量间伐。所谓定量间伐,是从数学生态学的角度出发,以林分各年龄阶段的生长发育数量为基础,确定各时期的间伐强度。这类方法一般是以单位面积保留株数来控制间伐强度,进行作业时,首先根据有关图表,查出应保留株数,确定适宜的间伐强度,然后参照林 With the development of thinning, the current method of determining thinning intensity is gradually transferred from qualitative thinning to quantitative thinning. The so-called quantitative thinning is from the mathematical point of view of ecology, forest stand in all age stages of the number of growth and development as the basis to determine the thinning intensity of each period. This method is generally based on the number of units retained per unit area to control the thinning strength, the operation, first of all based on the chart, identify the number of strains should be retained to determine the appropriate thinning intensity, and then refer to the forest