基于模糊综合评价法的渭河流域生态脆弱性评价

Assessment of Ecological Vulnerability Based on Fuzzy Comprehensive Evaluation in Weihe River Basin

为了给渭河流域生态系统的保护与重建提供科学依据,在对该流域生态环境分析的基础上,从自然因素和人文因素两个方面选取9项指标,建立生态脆弱性评价指标体系,采用基于熵权法的模糊综合评价模型对渭河流域的生态脆弱性进行评价。结果表明:北洛河区脆弱程度最大,渭河干流区和泾河区属中度脆弱区。渭河流域生态环境不容乐观,管理者应根据其特点,合理规划、因地制宜的加以治理。

Based on the analysis of ecological environment in the basin, 9 indicators were selected from two aspects of natural factors and human factors, the evaluation index system of ecological vulnerability was established with the fuzzy comprehensive evaluation model based on entropy weight method and the ecological fragility of Weihe River Basin was evaluated. The results showed that the highest degree of ecological vulnerability was Beiluohe River, Weihe River and Jinghe River belonged to moderate vulnerable area. The ecological environment of Weihe River Basin was not optimistic. Managers shouldle according to basin＇s characters of the ecological environment to plan rationally and adop suitable measures.