不同立地条件对毛竹枝下高的影响研究  

Effects of Different Site Conditions on Under-branch Height of Phyllostachys pubescens Mazel

作　　者：孙鸿宇[1] 宋丁全[2] 王福生[3] 

机构地区：[1]南京林业大学森林资源与环境学院,江苏南京210037 [2]金陵科技学院,江苏南京211169 [3]南京林业大学竹类研究所,江苏南京210037

出　　处：《金陵科技学院学报》2009年第4期61-65,共5页Journal of Jinling Institute of Technology

基　　金：国家十一五科技支撑项目(2006DAD19B02)

摘　　要：通过对江苏省宜兴地区30块毛竹标准地的调查,分析了坡向、坡度、坡位、腐殖质厚度、郁闭度、立竹度6个因子对毛竹枝下高生长量的影响,对6个立地因子进行了逐步回归分析,结果显示郁闭度、坡位和立竹度是影响毛竹枝下高的主要因子。对6个立地因子进行主成分分析,将6个变量转换成3个主成分,其累计贡献率达到86.1%。Based on the survey of thirty sample plots of Phyllostachys pubescens Mazel in Yixing district of Jiangsu province,this paper explores the effects of 6 factors such as aspect,gradient,slope position,humus thickness,canopy density and density on the increment of Phyllostachys pubescens Mazel.Through stepwise regression analysis of the six site factors,the result shows the canopy density,slope position and density are the main factors which influence the growth of under-branch height.Then through principal analysis,the six variables are turned into three principal components,whose cumulative proportion runs to 86.1%.

关 键 词：毛竹 枝下高 逐步回归分析 主成分分析 

分 类 号：Q948.11[生物学—植物学]