南京市城市生态系统可持续发展评价研究

Evaluation of Sustainable Development of Urban Ecosystem in Nanjing City

采用一种完全递阶的层次结构 ,建立了城市生态系统评价的指标体系。指标体系分为 3个层次 ,第一层次是目标层 ,以城市综合发展能力为目标 ,第二层次是准则层 ,即发展水平、发展力度和发展协调度 3个准则 ,第三层次是指标层 ,选择了 30项具体指标。运用层次分析、模糊综合评价以及线性隶属方法对南京市城市生态系统进行了评价。评价结果表明 ,南京市城市生态系统总体上向着高效、和谐的方向发展 ,但发展过程中存在的问题是发展水平较低 ,发展的协调度年际变化较大 ,且子系统及其组成要素存在着发展的非均衡性。因而 ,必须进一步调整南京市城市生态系统的结构与功能。

On the basis of the connotation of sustainable development and adopting a completely graded layer structure, this thesis established an evaluation index system for urban ecosystem. The evaluation index system included 3 levels. The first level was the target level, selecting the capacity of urban integrate development as the target. The second was criterion level, including the level, force and coordination degree of development. The third was index level, selecting 30 concrete items. Nanjing urban ecosystem was evaluated using analytic hierarchy process, fuzzy integrated evaluation and linear subordinated function. The results showed that Nanjing urban ecosystem generally develops in the direction of high efficiency and harmony. However, the level of sustainable development was lower, and the coordination degree fluctuated greatly. Therefore, it is necessary to improve the structure and function of Nanjing urban ecosystem.