按郁闭度来确定一个林分是否需要进行抚育间伐,按强度来控制抚育间伐的林木株数和出材量,这种做法在抚育间伐过程中不是超出就是达不到设计的强度。现谈谈利用经营密度表的保留株数换算成单位郁闭度级相应株数,来确定抚育间伐的开始株数和控制抚育间伐强度的作法: 一、各树种各平均直径的各郁闭度级相应株数的计算黑龙江省林区天然幼壮林、人工林经营密度表,是根据林木的冠幅、胸径和株数的相关规律,进行一系列的统计分析之后而确定的单位面积上的合理株数,郁闭度 According to the degree of canopy density, it is necessary to determine whether a stand needs to be tending thinning or not, and to control the number of trees to be raised and the amount of timber to be levied according to the intensity. This practice does not exceed or weaken the design intensity during tending and thinning. We now talk about the use of operating density table number of reservations converted into unit canopy density corresponding to the number of plants to determine the number of initial tending thinning and control of tending the thinning practices: First, the average diameter of each tree species of each degree of closure The calculation of the density of natural plantation and plantation in Heilongjiang Province is based on a series of statistical analyzes based on the law of crown width, DBH and number of trees, and then the number of rational plants per unit area, degree