不同立地条件对毛竹生长影响研究  

Study of Effects of Different Site Condition on Growth of Phyllostachys pubescens Mazel

作　　者：崔鸿侠[1] 熊德礼[1] 张维[2] 陈双田[1] 徐敏 蔡建国 

机构地区：[1]湖北省林业科学研究院,武汉430079 [2]湖北生态工程职业技术学院,武汉430020 [3]湖北省嘉鱼县林业局,咸宁437200 [4]湖北省国有林场工作站,武汉430070

出　　处：《湖北林业科技》2008年第1期8-11,共4页Hubei Forestry Science and Technology

摘　　要：以咸宁市咸安地区40块毛竹标准地的调查资料为基础,分析了坡向、坡度、坡位、腐质层厚度、郁闭度和立株度对毛竹胸径生长量的影响。首先对这6个立地因子进行逐步回归分析,结果表明坡度、腐质层厚度和坡位是影响毛竹胸径生长的主要因子。再对6个立地因子进行主成分分析,其2个主成分累积贡献率达78.5%,并计算出各标准地的这2个主分量值。最后在主成分分析结果的基础上,对40块标准地进行了聚类。Based on surveying data of sample plots of Phyllostachys pubescens Mazel in Xian＇an district of Xianning City,the effects of aspect,gradient,slope,humus thickness,crown density and stock density on the increment of Phyllostachys pubescens Mazel.were analyzed.At first,we used the six site factors to make stepwise regression analysis,the result showed the gradient,humus thickness and slope were the main factors on growing of D.B.H.Then taking the six site factors principal analysis,make the six variables turn to two principal components,and this two components＇ cumulative proportion got to 78.5%.And it calculated each of sample-plot＇s two accounts of principle components.At last,basing on the result of principle component analysis,we make the forty sample-plots cluster.

关 键 词：毛竹 生长量 逐步回归 聚类 

分 类 号：S795.7[农业科学—林木遗传育种] S162.5[农业科学—林学]