基于GIS技术的生态环境脆弱性模糊综合评价  

Study on GIS-Based Fuzzy Comprehensive Evaluation of Eco-Environmental Vulnerability

作　　者：何娟[1] 徐明德[2] 

机构地区：[1]泰州市环境监测中心站,江苏泰州225300 [2]太原理工大学环境工程与科学学院,太原030051

出　　处：《四川环境》2011年第1期56-60,共5页Sichuan Environment

摘　　要：研究过程中摒弃了以往生态环境脆弱性分析中常有的以乡、镇为研究单元的传统模式,改用栅格单元为基本研究单元,切实反映了区域自然环境特征的非均衡性和连续性,使研究结果打破行政区界限从而具有"空间性";并基于栅格单元首次提出了将"地理信息系统技术"和"AHP-模糊综合评价模型"互相融合的生态环境脆弱性研究的"分解-合成"新方法,使得原本数据信息有限的模糊矩阵扩展成包含大量网格信息的巨型空间矩阵,较好的解决了图层属性单一化与模糊隶属最大原则之间的矛盾。文章从"模糊隶属度"层面进行生态环境脆弱性综合分析评价。In this paper,eco-environmental vulnerability was studied in grid mode in stead of traditional township mode so as to reflect the unevenness and continuity of regional natural environmental features.In the grid mode,a novel method of ＂decomposition-synthesis＂ was established for the first time by combining the ＂Geographic Information System Technology＂ and ＂AHP-Fuzzy Comprehensive Evaluation Model＂ together to research ecological environmental vulnerability.It turned the original fuzzy matrix with limited data into a huge spatial one containing a lot of grid information,which solved the contradiction between the simplified layers attributes and the principle of maximization of fuzzy membership.The eco-environmental vulnerability was analyzed and evaluated comprehensively from the point view of ＂fuzzy membership＂ in this paper.

关 键 词：生态环境脆弱性 GIS AHP-模糊综合评价模型 “分解-合成”技术 

分 类 号：X171.1[环境科学与工程—环境科学]