基于灰关联理论的流域生态环境评价

Eco-environmental assessment of basins based on grey associative theory

基于灰关联理论 ,建立流域生态环境评价模型 ,以巢湖流域为个案 ,构建流域生态环境评价指标体系 ,并提出了评价标准的级别划分 ,利用所建模型对流域生态环境质量现状进行评价。研究表明 ,灰关联评价模型能较客观、准确地反映各评价要素及流域环境质量状况 ,可用于不同条件下的区域环境质量比较 ,是一种较理想的评价方法。

Based on the grey associative theory,an eco-environmental assessment model of basins is established. As a case, the eco-environmental evaluation index system of Chaohu Lake Basin is formulated, and classified standards of evaluation indices are put forward. The established model is utilized to evaluate the eco-environmental quality of Chaohu Lake Basin. Study result shows that Grey Associative Model(GAM) can not only reflect the eco-environmental quality state of a basin objectively and accurately,but also can be used to contrast the environmental quality of different districts or periods. Therefore, GAM is an ideal method for eco-environmental evaluation of a basin.