火炬松人工林直径分布收获模型的研究

搜集福建省火炬松人工林各30株林分平均木和优势木的树干解析数据，运用正态分布、对数正态分布、Weibull分布、B分布、Γ分布函数来拟合福建省火炬松人工林的直径分布规律。结果表明：Weibull分布的拟合效果好，标准地接受率为80％，用参数回收技术建立火炬松人工林直径分布收获模型，经检验，每公顷材积平均相对误差8．37％，每公顷胸高断面积平均相对误差6．72％。因此该模型可以用来估测福建省火炬松人工林的林分结构和产量。

Study on Harvest Model of Diameter Distribution of Planted Pinus taeda Forest

The tree trunk analysis data collected from 30 plants of advantageous standing of planted Pinus taeda forest are simulatedly synthesized diameter distribution regularity of planted Pinus taeda forest in Hujian province by means of diverse distribution logarithms,such as positive distribution, logarithm positive distribution,Weibull distribution,B & T distributions.It reveals that the effect of Weibull distribution is good,and standard plot acceptance rate is 80%.The harvest model established by parameter regression skill with 8.37% and 6.72% of average relative error in volume per hectare and breast height section area per hectare respectively can be used to estimate the standing structure and output of planted Pinus taeda forest in Hujian province.