城市经济—生态—社会协调度评价及空间差异分析

Evaluation on City Economic-Ecological-Social Coordination Degree and Analysis of Spatial Differences

以国家级生态市建设为政策前提,以平凉市为研究对象,从经济发展、生态环境保护和社会进步3个方面构建了平凉市经济—生态—社会协调度评价指标体系。采用熵值法确定评价指标权重,用功效函数构建经济—生态—社会协调度评价模型,对平凉市经济—生态—社会协调度进行评价分析。结果表明:2002-2011年这10年间平凉生态城市综合协调度逐步提高。综合协调度从2002年的0.242(不协调)逐步上升到2011年的0.7588(比较协调),平均以每年0.05168速度在增长,平凉生态城市建设经历一个"不协调—不太协调—基本协调—比较协调"的渐进型发展过程。2011年平凉市各县区的生态协调度指数从高到低依次是:华亭县、崇信县、崆峒区、泾川县、庄浪县、静宁县和灵台县。聚类将平凉市7县区分成4种类型,即华亭与崇信为高度协调型、崆峒区良好协调型、泾川、庄浪与静宁中等协调型、灵台基本协调型。研究结果与平凉市实际情况基本符合,表明所建立的城市经济—生态—社会协调度评价指标体系的合理性和有效性,为城市经济—生态—社会协调度评价指标体系的完善提供依据。

Aiming at national ecological cityconstruction, Pingliang City was selected as the study site, the evaluation index system of economic-ecological-soeialcoordination degree in Pingliang City was established from economic development, environmental protection and social progress three aspects. Using the weight of valuation index entropy method and the function construction of economie-eeological-social coordination degree evaluation model to make a quantitative assessment ofeconomie-ecological -social coordination degree in Pingliang City. The results show： In the 10 years of 2002-2011 the comprehensive coordination of Pingliang ecologieal city gradually increase, from 0.242 （uncoordinated） to 0.7588 （more coordinated）, the average annual growth rate of 0.05168, Pingliang ecological eity construction through a ＂discordant-incongruous-basie eoordination-Compare coordination＂progressive development process. In 2011 index of ecological harmony county area of Pingliang City in descending order are： Huating County, ChongxinCounty, Kongtong district, Jingchuan County, Zhuanglang County, Jingning and Lingtai County. The 7 counties of Pingliang clustered into 4 types, Huating and Chongxin were highly coordinated type, good coordination typewas Kongtong district, Jingchuan, Jingningand Zhuanglang were moderate coordination type, Lingtai was basic coordination type. Research results in line with the actual situation in Pingliang City, showing the rationality and effectiveness of evaluation index system, provide a basis for improving the evaluation system of urban economicecological-social coordination degree.