文献类型：期刊文献

中文题名：短周期桉树人工林直径分布模型研究

英文题名：Study on the Diameter Distribution Model of Short Rotation Eucalypt Plantation

作者：陈永富[1]

第一作者：陈永富

机构：[1]中国林业科学研究院资源信息研究所

年份：2008

期号：z1

起止页码：50-54

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金："十一五"国家科技支撑重点计划项目(2006BAD23B05)

语种：中文

中文关键词：短周期;桉树;直径分布;函数;模型

外文关键词：short rotation;Eucalypts;diameter distribution;function;model

分类号：S792.39

摘要：选取正态分布、β分布、Γ分布、Weibull分布、对数正态分布、逻辑斯特分布、泊松分布、奈曼A型分布、负二项分布、二项分布、几何分布和对数分布分别拟合雷州林业局U6桉树无性系林分的直径分布,结果表明:β分布函数的适合率为88%,Weibull分布函数的适合率为83%,正态分布函数的适合率为81%,其它分布函数的适合率均低于50%,β分布函数是最佳的拟合函数。根据β分布函数,建立了基于林分年龄、立地指数、林分密度的直径分布动态预测模型,利用40块未参与模型建立的样地对直径分布动态预测模型精度进行检验,理论值与实测值之间的差异不显著,且相关系数均在0.9以上。
To select normal function,β function,Γ function,Weibull function,logarithmic normal function,logistic function,Poisson function,Neyman A function,negative binomial function,binomial function,geometric function and logarithmic function imitate diameter distribution of the clonal stands of U6 Eucalypts in Lei Zhou Forestry Bureau,the fiting rate of normal function was 88%,fiting rate of β function was 83%,fiting rate of Weibull function was 81%,fiting rates of other distribution functions were low than 50%.β distribution function was the best for imitating diameter distribution of the clonal stands of U6 Eucalypts in Lei Zhou Forestry Bureau.According β distribution function,the dynamic forecast model of diameter distribution was established base on stand age,site index and stand density.To examine the precision of dynamic forecast model of diameter distribution,forty samples which were not adopted to establish model were used,the difference between estimating walue and measuring value was not notable,and the correlationg coefficients were higher than 0.9.