摘要
从城市生态系统健康内涵出发,结合开封市实际情况,建立了开封城市生态系统健康评价指标体系。采用基于熵值的赋权法来确定指标权重,通过建立城市生态系统综合评价模型,对开封城市生态系统健康状况进行评价。结果显示:2002—2010年开封城市生态系统健康指数呈总体上升趋势,表明开封城市生态系统健康状况逐年好转;但从健康等级来看,健康水平一直处于不健康和亚健康级别,总体健康状况不容乐观;从3个子系统来看,城市生态系统健康水平的提高更多地得益于社会子系统与经济子系统的优化和完善,而自然子系统没有发生明显改观,对城市生态系统健康水平的提高并未起到积极作用。
Based on the concept of urban ecosystem health and actual characteristics of Kaifeng City, an index system of urban ecosystem health was established. Each index weight was calculated with entropy-weight method, and comprehensive evaluation model was established to assess the urban ecosystem health level of Kaifeng City. The results indicated that the comprehensive health index of Kaifeng City had been increasing from 2002 to 2010, it means that the ecosystem health state of Kaifeng City had been improved gradually. But the level of ecosystem health was in unhealthy state or sub-healthy state from the classification of ecosystem health level. The improvement of urban ecosystem health level mainly depended on the optimization of social and economic subsystem, while the positive role of natural subsystem was not obvious.
出处
《地域研究与开发》
CSSCI
北大核心
2012年第5期162-165,共4页
Areal Research and Development
基金
国家自然科学基金项目(41101089
41001319)
关键词
城市生态系统
健康评价
动态变化
熵权法
开封市
urban ecosystem
health assessment
dynamic change
entropy-weight
Kaifeng City
