突脉青冈天然林优势种直径结构规律探讨  

Study on the Diameter Distribution Structure of Dominant Species of Natural Cyclobal-anopsis elevaticostata Stands

作　　者：陈希英 

机构地区：[1]宁德市林业局,福建宁德352100

出　　处：《福建林业科技》2014年第4期30-35,44,共7页Journal of Fujian Forestry Science and Technology

基　　金：宁德市科技计划项目(突脉青冈天然林保护经营及人工林优化栽培技术;20090063)

摘　　要：采用样地调查方法,利用5个概率密度函数对突脉青冈天然林中4个优势种(突脉青冈、细柄阿丁枫、白楠、罗浮栲)的直径分布结构特征进行探讨,同时利用L-PRM模型、G-PRM模型拟合4个树种的林分直径分布概率函数。结果表明:除了正态分布,4个树种的林分直径都服从对数正态、威布尔、伽玛分布,而罗浮栲也服从贝塔分布;可用L-PRM模型、G-PRM模型模拟与预测细柄阿丁枫和罗浮栲各个径阶的林木株数。研究结果可为有效地预估林分生长,为更好地优化管理、经营突脉青冈天然林提供参考。By using the method of investigate plots and kinds of 5 probability density functions to research the diameter distribution structure of the natural Cyclobalanopsis elevaticostata stands that included Cyclobalanopsis elevaticostata,Altingia gracilipes Hemsl, Phoebe neurantha and Castanopsis faberi,the model of L-PRM and G-PRM to fit 4 tree species of the stand diameter distribution probability function ,the results showed that the stands diameter of main tree were subject to Logarithmic distribution , Weibull distri-bution and Гdistribution without normal distribution .And Castanopsis faberi was also subject to beta distribution .The model of L-PRM and G-PRM could be use to simulate and forecast the size order of the number of Altingia gracilipes Hemsl and Castanopsis faberi.The results provided reference for effective prediction of stands growth and better optimization of management of natural Cy-clobalanopsis elevaticostata stands.

关 键 词：突脉青冈 直径分布 分布函数 L-PRM模型 G-PRM模型 

分 类 号：S792.189[农业科学—林木遗传育种]