5·12地震后北川县受损林地立地因子与植被的相关性研究

对四川省北川县在5.12地震中21个受损林地进行立地调查,采用因子分析法进行主导因子提取。结果表明,在该范围内,土壤硬度变量在第1因子中占有较大比重,为0.910,因此第1因子主要反映的是土壤情况;基岩类型变量在第2因子中占0.895,因此第2因子反映的是基岩情况;坡向变量在第3因子中占0.832,因此第3因子主要反映的是地形情况。...

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Bibliographic Details
Published in广东农业科学 Vol. 39; no. 9; pp. 148 - 150
Main Author 王娟 赵廷宁 史常青
Format Journal Article
LanguageChinese
Published 北京林业大学水土保持学院/教育部水土保持与荒漠化防治重点实验室,北京,100083 2012
Subjects
受损林地
因子分析法
地震
相关性
相关性
地震
因子分析法
受损林地
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ISSN1004-874X
DOI10.3969/j.issn.1004-874X.2012.09.047

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Summary:对四川省北川县在5.12地震中21个受损林地进行立地调查,采用因子分析法进行主导因子提取。结果表明,在该范围内,土壤硬度变量在第1因子中占有较大比重,为0.910,因此第1因子主要反映的是土壤情况;基岩类型变量在第2因子中占0.895,因此第2因子反映的是基岩情况;坡向变量在第3因子中占0.832,因此第3因子主要反映的是地形情况。
Bibliography:WANG Juan, ZHAO Ting-ning, SHI Chang-qing （College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China）
44-1267/S
earthquake; damaged woodland; factor analysis; topographical factors; correlation.
The investigation about 21 plots of damagedland wood in Beiehuan was conducted with the methods of factor analysis. The results showed that soil hardness accounted a large proportion of 0.910 in the first main component, so the first factor reflected the soil conditions; bedrock type occupied 0.895 in the second main component, so the second factor reflectd the bedrock circumstances; aspect occupied 0.832 in the third main component, so the third factor mainly reflected the terrain.
ISSN:1004-874X
DOI:10.3969/j.issn.1004-874X.2012.09.047