›› 1987, Vol. 23 ›› Issue (zj1): 45-54.
• 论文及研究报告 • Previous Articles Next Articles
Liu Junran
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Abstract: This Paper is on the basis of the data from the table of standgrowth about main timber-tree species in China,to count the tree-number of stand density about different tree pecies forest-types site-classes and different mean diatmeter.Classes;Meanwhile,to courtt the tree-number reserve coeffieient(L)after Stand natural-thinning,the coefficient(L)equals the ratio that a digger diameter class comDares with a smaller diameter class.The coefficient(L)has the following law:(1)when density of stoeking is 1.0,L will increasea Iong with the increasing of stand rilean diameter.L is not a fixed ratio;(2)when density of stocking is 1.0 and stand mean diameter equals tree spacing,the L of the same tree species and different forest-type and site-class is very close each other or equal.TeSting and verifying shows L of the tree species in our country is basicallyclose or eaual.This law will provide some mportant data for forestimprovement-cutting.Srand technical mature,and growth forecast.
Liu Junran. STUDIES ON THE LAW OF STAND MEAN DIAMETER AND NATURAL-THINNING[J]. , 1987, 23(zj1): 45-54.
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