城市生态可持续性的内涵及其支持系统评价指标体系研究

构建城市生态可持续性支持系统评价模型并对其发展水平进行综合评价,是城市生态可持续性从理论研究阶段进入可操作的实际应用阶段的重要步骤。针对城市生态可持续性基本内涵,根据＂承载力-支持力-吸引力-延续力-发展力＂（CSAED）模型框架,构建城市生态可持续性支持系统的评价指标体系,以泛长株潭地区为例,分析了该区域各地市在生态环境有效改善、资源能源集约利用、社会民生和谐进步、经济高效公平增长、人口质量综合提升、政策和制度调整与完善等方面的基本情况与提升方向。评价结果表明：泛长株潭地区大部分城市生态环境有效改善水平、资源能源集约利用效率、社会民生进步程度以及经济高效公平增长水平都普遍偏低,这意味着当前该区域亟需解决城市生态承载力不够强、环境容量有限、产业结构仍待升级、就业结构不优及公共服务不足等区域经济社会发展不协调问题,以维持区域城市生态可持续性。

Study on connotation and evaluation index system for support system of urban eco-sustainability

The construction of the evaluation model of support system of urban eco-sustainability with the overall evaluation of its development levels,is the key process to take the basic and theoretic study of urban eco-sustainability into the practical application.Based on the analysis of the basic connotation of urban eco-sustainability,the study explores to construct the support system of urban eco-sustainability by embedding the Carrying capacity-Supporting capability-Attractive capability-Evolutional capability-Developing capability（CSAED） model within a multi-level framework.According to the above theory and model,a case study of Pan-CZT city cluster is utilized to discuss the basic situation and development orientation in the effective improvement of eco-environment,intensive utilization of resource-energy,harmonious progress of social livelihood,high-efficiency and equal growth of economy,comprehensive promotion of population quality and regulation and perfection of policy and system in the urban agglomeration region,to maintain urban eco-sustainability efficiently.The results showed that the effective improvement of eco-environment is limited and efficient utilization of energy resource is general low,suggesting that it is appropriate and necessary to expand urban ecological and environmental capacity;development level of high efficient and equal growth of economy is relatively low,signifying that optimizing industrial structure and employment environment can tackle the challenges properly;promotional ability of social livelihood is insufficient,indicating that promoting public service and citizens’ welfare is the key solution to guarantee urban eco-sustainability efficiently.