摘要
利用 Arc/Info提供的主成分分析方法对陇中黄土高原潜在生态环境进行评价 .首先选取对潜在生态环境影响较大的指标构建数字生态环境模型 ,然后对二级指标体系进行主成分分析 ,获得一级指标指数 ,最后对一级指标体系进行主成分分析 ,获得潜在生态环境评价指数 .主要目的在于提供一种生态环境评价方法 .
This potential eco-environment of Longzhong Loess Plateau is evaluated by using uhe principal component analysis with GIS software Arc/info.Firstly,the Digital Environmental Model (DEM) is set up by more heavily influential factors to the potential eco-environment.Secondly,the principal component analysis is performed to the second class indexes to obtain the first class indexes.Then the potential eco-environment index is obtained in the same way.The main purpose is to supply a method to evaluate the eco-environment.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第3期73-76,共4页
Journal of Lanzhou University(Natural Sciences)
基金
国家重点基础研究发展规划"中国北方沙漠化过程及其防治研究"资助项目 ( G2 0 0 0 0 4870 1 ) .
关键词
陇中黄土高原
数字环境模型
主成分分折
潜在生态环境评价
Longzhong Loess Plateau
digital environmental model
principal component analysis
potential eco-environment evaluation
