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(一)抚育间伐对人工用材林立木价值量的影响人工林的抚育间伐方式主要有疏伐和生长伐两种。尽管这两种抚育伐进行的时间、对象不同,但它们都消耗了一定量的人类劳动,都有一定量的经济收入,就这点来说,又是相同的。因此,本文以生长伐为例,分析抚育间伐对人工用材林立木价值量的影响。这一影响主要表现在两个方面:其一,抚育间伐使人工用材林单位面积价值量绝对地增加。因为抚育间伐消耗了一定数量的人类劳动,必然形成一定量的价值。其二,抚育间伐使人工用材林单位面积价值量相对地减少。因为抚育间伐会产出一定数量的间伐木材,这样间伐后的林分单位面积
(A) the effect of tending thinning on the timber value of artificial timber Timbering of the main methods of tending thinning and growth of two kinds of cutting. Although these two types of tending and cutting are carried out at different times and in different places, they both consume a certain amount of human labor and have a certain amount of economic income. In this respect, they are the same again. Therefore, in this paper, taking the growth cutting as an example, the effect of tending thinning on standing timber value of artificial timber was analyzed. This impact is mainly manifested in two aspects: First, tending thinning increases the absolute value of the unit area of plantation timber. Since tending to thinning consumes a certain amount of human labor, it is bound to form a certain amount of value. Second, tending thinning makes the unit area value of artificial timber forests relatively reduced. Because tending to thinning will produce a certain amount of thinning timber, so after thinning per unit area