基于层次分析法的重庆市城乡结合部生态系统健康评价

在界定城乡结合部概念的基础上,针对其特征和存在问题,综合考虑社会人居、经济发展和自然生态等因素,构建了城乡结合部生态系统健康评价指标体系.以复合生态系统整体状态为目标,采用层次分析法确定指标权重,对城乡结合部进行生态系统健康评价,并选取重庆市大渡口区进行了案例研究.现状评价显示:相较于城市,城乡结合部的结构与功能耦合不够优化,生态潜力有待发掘;城乡结合部的活力优于城市,而组织结构、恢复力和环境质量均逊于城市;其中经济产业结构、市政设施、社会人口组成、道路噪声、空气质量是城乡结合部与城市差距最大的方面.这些因素均值得在城乡结合部综合整治中予以考虑.

Ecosystem health assessment of urban-rural ecotone in Chongqing based on the analytic hierarchy process

With the basement of defining the urban-rural ecotone, a set of assessment index system of ecosystem health for urban-rural ecotone was designed which combined the consideration of social habitat, economic development and natural ecological factors, and was in connection with the characteristics and prominent problems of urban-rural ecotone. In the assessment index system, the weights of indexes were determined by analytic hierarchy process. The case study of Dadykou district in Chongqing City showed that the coupling of structure and function needed to be optimized and the ecological potential was to be discovered for the urban-rural ecotone. The urban-rural ecotone had better vigor but worse organic structure, resilience and environmental quality than the city. The biggest gap between the urban-rural ecotone and the city was founded in economic structure, municipal facilities, social-demographic composition, road noise and air quality. All the above should be considered in the comprehensive improvement of urban-rural ecotone.