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文章从构造枯损函数的定义出发,分析了枯损函数的若干性质。并将枯损函数分解为两个函数:一个是枯损强度函数;另一个是林木的径阶枯损率函数。从枯损的机理来看,枯损强度函数与林分的密度和立地密切相关,而林木的径阶枯损率函数与之无关。这个假设已由落叶松、杉木、桉树固定标准地的定株观测资料所揭示的枯损率按径阶的分布规律所证实。枯损是造成林分直径结构随林龄变形的主要原因。从枯损出发,揭示的人工林的直径结构动态变化方式和规律,予示着人工落叶松和衫木林分直径结构以正态分布为其极限分布。
Based on the definition of the construction loss function, the paper analyzes some properties of the loss function. And the loss function is decomposed into two functions: one is the loss strength function and the other is the log loss function of the forest. From the mechanism of withered loss, the function of withers loss is closely related to the density and site of stand, while the function of log loss is not related to it. This hypothesis has been confirmed by the order of magnitude distribution of the loss rates revealed by the fixed observation data of larch, fir, and eucalyptus. Wither is the main reason that the diameter structure of stand varies with age. Starting from the loss, revealing the dynamic changes in the diameter of the plantation structure and law, showing the artificial larch and Swertia diameter structure with its normal distribution for its extreme distribution.