投影寻踪模型在区域生态环境质量评价中的应用  

Application of projection pursuit model in regional eco-environment quality assessment

作　　者：王顺久[1] 李跃清[1] 

机构地区：[1]中国气象局成都高原气象研究所,成都610071

出　　处：《生态学杂志》2006年第7期869-872,共4页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(50509002;40271024);国家重点基础发展规划资助项目(2003CB415200)。

摘　　要：大量相关因子的简化和降维处理是生态环境质量评价的关键问题之一。而投影寻踪模型可将多个指标投影到线性空间,实现指标的降维处理。本文以巢湖流域生态环境质量综合评价进行了实证分析,巢湖流域生态环境质量为3级,其中合肥市和六安市所属区域生态环境质量为3级,巢湖市为4级。研究表明,应用投影寻踪模型进行区域生态环境质量评价人为干扰少,操作简便,便于在生产实践中应用,为区域生态环境质量评价提供了一条新途径。One of the difficulties frequently encountered in eco-environment quality assessment is that not one but all the affecting factors associated with eco-environment quality must be used.To overcome this issue,the principle of projection pursuit was introduced,and the projection pursuit cluster(PPC) model that can realize the transition from high dimension to one-dimension was stated in this paper.As an application example,the eco-environment quality assessment of Chaohu Basin in Anhui Province was presented.T...

关 键 词：生态环境质量评价 评价指标 评价模型 投影寻踪 

分 类 号：X826[环境科学与工程—环境工程]