基于熵权的郑州市城市生态系统健康评价

城市生态系统是以人工为主导的自然、经济、社会3个子系统的复合生态系统,为使城市生态系统健康发展,根据健康评价指标体系建立原则,构建了一个4层的城市生态系统健康指标评价体系,采用基于熵权的模糊综合评判法,从时间纵向上研究了郑州市城市生态系统的发展趋势.结果表明：从2003年到2007年,反映生态系统结构功能的各要素,表现出了不同的发展趋势;郑州市城市生态系统健康状况呈总体上升的趋势;3个子系统间不能够协调发展,主要是社会子系统存在结构不合理等原因引起,可为制定进一步的城市发展政策借鉴.

Assessment on Zhengzhou Urban Ecosystem Health Based on Entropy Weights Approach

The urban ecosystem is an artificial compound ecosystem,which includes natural subordinary system,economical subordinary system,and social subordinary system,in order to make the urban ecosystem develop healthyly,an urban ecosystem health-index assessment system was formed.Adopting a fuzzy logic approach basing on entropy weights,the trend of Zhengzhou urban ecosystem development was discussed.The results show that,from 2003 to 2007,every elements which reflect the structure and function of ecosystem shows different trend,and the whole urban ecosystem health condition shows upward trend,and the development of three subsidiary systems can not be harmonize,because the social subsidiary system has some problems such as the structure is unreasonable.These can refered for making the further developing politicy of this city.