改进单纯形法在林分结构规律研究中的应用

The Application of Modified Simplex Method in the Study on Stand Structure

提出用改进单纯形法估计Weibull分布及其变型模型的参数 ,并通过直径和树高分布的实验拟合 ,经χ2 检验 ,其拟合效果优于传统的拟合方法。说明拟合方法的选择比改变其形式更重要 ,改进单纯形法 ,丰富了Weibull分布参数估计方法 。

The Modified simplex method was presented to estimate the parameters of Weibull distribution and improve Weibull distribution, then the diameter distribution and height distribution in different forests were simulated. The results of χ 2 test showed that all simulating results by the modified simplex method were better than those by traditional methods. The estimating method is more important than the types of Weibull distribution. And the modified simplex method is a simple and accurate tool which has enriched the methods for estimating paramters with higher effects.