四川巨桉短周期工业原料人工林直径分布规律及其收获模型的研究

Research on the DBH Distribution and Yield Model of Pulpwood Plantation of Eucalyptus grandis in Sichuan Province

运用Weibull分布、反 Weibull分布、Logistic方程三种模型拟合巨桉短周期工业原料人工林林分直径分布规律,结果表明Logistic方程拟合巨桉人工林的直径分布效果好,并在此基础上分3个立地等级建立了直径分布收获模型,经检验,精度达到要求。

The DBH distribution of Ecualyptus grandis plantations was initiated with the functions of Weibull,reverse Weibull and logistic.The results showed that Logistic function accorded well with the DBH distribution of the plantation.And then,the yield models of DBH distribution(YMDD)were established respectively for three sites.The model was tested and its accuracy could meet the requirement.