生态城市指标体系与评价方法

生态城市是依据生态学原理提出的一类社会-经济-自然协调发展的城市。目前生态城市理论研究主要应用在城市的规划、设计和管理上。生态城市建设的评价是衡量生态城市规划、建设、管理成效的主要依据。在对生态城市理论和内涵详细分析的基础上,采用专家咨询的定性和定量信息构建了扬州生态城市评价指标体系,该指标体系包括了城市复合生态系统中社会、经济、自然3个子系统,反映生态城市的内涵和衡量生态城市各子系统的状态、动态和实力。为对各级指标进行综合,提出了全排列多边形图示指标评价方法,评价生态城市在各个规划时段的建设成效。评价结果表明,扬州生态城市的综合发展能力市在2005规划年将达到0.44,在2010规划年将达到0.64,在2020规划年将达到0.85。评价方法简单直观,代数计算结果考虑了各级指标临界值对综合指标的放大和紧缩效应,反映了整体大于或者小于部分之和的系统整合原理。

The indices and the evaluation method of eco-city

Eco-city is a social-economic-natural harmonization development system according with the ecology principle. Now the research of eco-city theory is mainly focused on the planning, designing, and management of city. The assessment of eco-city is the basis for the planners to evaluate the effect of their eco-city planning. This paper reviewed the history and the connotation of eco-city theory, and designed the indices system of the Yangzhou eco-city planning based on the expert consultation to evaluate the eco-city's development ability. The indices system includes social, economic and natural factors, and the coupling status of these three subsystems. The entire-array-polygon evaluation method was offered to evaluate the Yangzhou eco-city planning using the designed indices system. And the results show that the synthesis index of Yangzhou Eco-city will be 0.44 in 2005, and the development ability will belong to class III and will be general. It will be 0.64 in 2010, and the ability will belong to class II and will be better. It will reach to 0.85 in 2020, and the ability will belong to class I and will be excellent. The process of evaluation shows that the indices system and the evaluation method are very simple and easily applied, and the entire-array-polygon method is capable of validating the system integrating theory that synthesis is bigger or smaller than the sum of elements.