关键词: 生态环境质量评价;生态环境空间格局;组合赋权法;综合指数法;区域差异;空间自相关;长三角中心区;

Abstract: Taking the 27 cities in the central area of the Yangtze River Delta for example, three levels and 20 indicators of ecological environment quality evaluation model were constructed to measure eco-environmental quality comprehensive index by using comprehensive index method based on a combined weights of entropy method and variation coefficient method.At the same time, spatial autocorrelation is used to analyze the dynamic trends and spatial distribution patterns of urban ecological environment quality in the central area of the Yangtze River Delta.The results are as follows:(1) The weight of the criterion layer shows a trend of “three rises and one drop” in multiple stages, and the gap of weight has gradually decreased, reflecting the coordinated development of the economy, society and environment.(2)Since “the 13th Five-Year Plan”,the ecological environment quality of the Xuancheng City, Taizhou City, and Nantong City are good, while that of the Wuhu City and Ma'anshan City are poor.From the perspective of provinces and municipalities, the ecological environment quality in Shanghai is relatively good, while the ecological environment in Anhui Province is relatively poor.(3) The eco-environmental quality in the study area shows a markedly high-high or low-low agglomeration, and the Moran's I shows a declined trend during the study period, indicating that the spatial coordination of the eco-environmental quality has been strengthened gradually.The article puts forward relevant countermeasures and suggestions for the problems revealed in the quantitative evaluation, and provides theoretical support for the development process of ecological green integration in the Yangtze River Delta.

Key words: eco-environmental quality evaluation; eco-environmental quality spatial distribution patterns; combined weights method; comprehensive index method; regional differences; spatial autocorrelation; central area of Yangtze River Delta;