广义城市生态系统安全性的评价与分析--以河北省11个设区市为例

广义城市生态系统是一个大的复杂系统,对其进行安全性评价是为城市健康、稳定发展提供相应的理论支持.本文对层次分析法构建的评价体系进行了改进,建立组合权重计算公式,以河北省11设区市为例,利用新建体系进行了实际计算和分析,根据分析结果总结出,工业化对城市化作用较弱、工业集约化水平低、资源供求矛盾突出、城市环境污染严重、循环经济发展缓慢等,都是造成河北省城市广义生态系统较不安全的主要原因.

The Evaluation and Analysis of the General Urban Ecosystem: A Case Study in 11 Cities of Hebei Province

General urban ecosystem is one huge and complicated system. Evaluating ecological security is providing the theoretical supporting for stable and healthy development of cities. This article improves the evaluation system constructed by the analytic hierarchy process and establishes the calculation formula of combined weights. And 11 cities in Hebei Province that are set for examples are calculated and analyzed by means of this new established system. According to the results of the analysis, the weak action of industrialization to urbanization, the low level of industrial intensive, the obvious contradiction between the supply and demand of resources, the serious pollution of urban, the slow development of cycle economic, all of these are main reasons of rather unsafe of general urban ecosystem in Hebei.