基于熵权灰度关联法的重庆市生态系统健康评价

依据重庆市生态系统的特殊性，建立以自然、经济、社会为三要素的生态系统健康评价指标体系，运用熵权法确定各个评价指标权重，通过灰色关联法对2000～2007年重庆市生态系统各要素的健康状态以及综合健康状态进行动态评价与比较分析．结果表明：重庆市生态系统健康状态整体呈上升趋势，但健康度值〈0．7，健康度相对较低，系统的健康状况与目标期望值仍有很大差距．

Assessment of Urban Ecosystem Health in Chongqing Based on the Entropy and Gray Correlation Method

Considering the content of ecosystem health, based on the specificity of urban ecosystems, have set up the health evaluation index system of urban ecosystem has been set up, which involves nature, economy and society. This paper endows weighing to indexes by entropy-weighing method, a comprehensive and dynamic assessment was carried out to measure and compare the state of urban ecosystem health during the years of 2000 and 2007 in Chongqing city by grayscale relative method. The results show that： the degree of the health condition of Chongqing city was increasing year by years, but the degree of the health 〈 0.7, the degree of the health is lower relatively, there is still a big gap between the current state of urban ecosystem health and the expectations.