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：李展[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 [2]金陵科技学院,南京211169 [3]南京林业大学竹类研究所,南京210037

出　　处：《世界竹藤通讯》2010年第3期16-19,共4页World Bamboo and Rattan

基　　金：国家十一五科技攻关项目资助

摘　　要：通过对福建省三元地区30块毛竹标准地的调查,分析了坡向、坡度、坡位、郁闭度、立竹度5个因子对毛竹枝下高生长量的影响,对5个立地因子进行了全变量回归分析,结果显示郁闭度、立竹度和坡度是影响毛竹枝下高的主要因子。对5个立地因子进行主成分分析,将5个变量转换成3个主成分,其累计贡献率达到82.116%。Based on surveying data of the 30 sample plots of Phyllostachys pubescens Mazel in Sanyuan Prefecture of Fujian Province,the effects of aspect,gradient,slope position,canopy density and stocking on the growth volume of under-branch height of Phyllostachys pubescens Mazel were analyzed. Enter regression analysis were made for 5 site factors,and the result showed the canopy density,slope position and stocking were the main factors to influence the under-branch height. Then principal components analysis were taken for the 5 site factors,and the 5 variables were turned to 3 principal components,with the cumulated contribution rate being 82.116%.

关 键 词：毛竹 枝下高 全变量回归分析 主成分分析 

分 类 号：S795[农业科学—林木遗传育种]