新型城镇化与生态环境耦合协调发展研究——以江苏省为例

Coupling and Coordinated Development of New Urbanization and Ecological Environment:A Case Study of Jiangsu Province

采用熵值法、耦合协调度模型、空间相关性模型探究了江苏省在2012─2021年间新型城镇化和生态环境耦合协调发展的时空演变规律,并运用GIS等级设色法进行了空间可视化分析。结果表明:江苏省的城镇化发展水平不断提升,全省平均城镇化发展水平综合指数由2012年的0.280提升到2021年的0.504,但依旧存在“南高北低”的空间分布格局;全省平均生态环境综合指数由2012年的0.584提升至2021年的0.759,各市的生态环境水平由显著分异转变为轻度分异;江苏省13个市新型城镇化与生态环境的耦合协调度水平不断提升,总体上呈“南高北低”的空间分布;与生态环境水平相比,江苏省大部分市存在城镇化滞后现象,全省仅有南京和无锡两市的2个系统在2021年达到了同步协调发展;江苏省城镇化和生态环境间的耦合协调度存在较强的空间正相关性,大多数地级市表现出高集聚和相邻的特征,形成高协调辐射,但泰州和盐城的发展因受虹吸作用影响而受阻。

The entropy value method,the coupling coordination degree model and the spatial correlation model were used to explore the spatial and temporal evolution of the coupling and coordinated development of new urbanization and ecological environment in Jiangsu Province during 2012~2021,and the GIS hierarchical color setting method was used analyze the spatial visualization.The results show that the level of urbanization development in Jiangsu Province has been increasing,and the average urbanization development composite index of the province has increased from 0.280 in 2012 to 0.504 in 2021,but there is still a development trend of“high in the south and low in the north”.The average ecological environment composite index of the province has increased from 0.584 in 2012 to 0.759 in 2021,and the level of ecological environment in various cities changes from a significant difference to a mild difference.The coupling coordination level of new urbanization and ecological environment in 13 cities of Jiangsu Province has been continuously improved,but shows“high in the south and low in the north”in general.Compared with the level of ecological environment,most cities in Jiangsu Province have the phenomenon of lagging urbanization,and only Nanjing and Wuxi reach the synchronous development of the two systems in 2021.There is a strong positive spatial correlation between the degree of coupling and coordination of urbanization and the ecological environment in Jiangsu Province,and most of the cities show high agglomeration and proximity to each other to form a highly coordinated radiation,but the development of Taizhou and Yancheng was hindered by the siphon effect.