福建省火炬松适生性的研究——Ⅲ.密度效应规律

Studies on the Adaptability of Pinus taeda in Fujian ——Ⅲ.The Density Effect Laws of Pinus taeda

应用火炬松人工林标准地资料 ,探讨了密度效应模型V =α·Nβ1 ·Hβ2 ,式中α、β1、β2 为参数 ,V为单株材积 ,N为林分每 0 .0 6 7hm2 面积上的株数 ,H为林分优势木高度。文中还对该模型进行生产弹性分析、边际产量分析 。

This paper studies the density effect model by using data of Pinus taeda plantation. The model is described as V=α·N β1 ·H β2 , where α, β 1 and β 2 are parameters, N is the number of tree in the stand and H is the height of dominant trees. Furthermore, the analyses of productive elasticity and marginal yield have been made. And the paper also calculates the value of productive elasticity and marginal yield, which will provide the scientific basis for forest management.