长江经济带三大城市群城镇化与生态环境时空耦合特征

城市群作为多要素集聚空间,以城镇化与生态环境交互关系为代表的"人-地"耦合特征与规律有待深入探讨。立足于"人-地耦合"视角并构建指标体系,综合测度长江经济带三大城市群城镇化与生态环境耦合关系,并进行协调类型划分与主控因素的分析。研究发现:(1)城市群整体城镇化与生态环境耦合协调度达到0.38,空间依赖性较强,且高低聚类程度较高;(2)三大城市群城镇化与生态环境耦合关系存在阶段性差异,空间不均衡性较为显著;(3)城镇化与生态环境耦合关系的"协调型"特征具有多种类型,城镇化滞后型协调现象较为普遍,同时存在"弱势型"协调问题;(4)城市群整体城镇化与生态环境耦合关系主控因素在十年间由经济城镇化转为人口城镇化;长三角、长江中游和成渝三大城市群分别受到人口集聚、建设投资与工业污染的主导影响。

Temporal and Spatial Coupling Characteristics of Urbanization and Ecological Environment of Three Major Urban Agglomerations in the Yangtze River Economic Belt

As a multi-element gathering space, urban agglomeration is characterized by the “human-ground” coupling characteristics and laws represented by the interaction between urbanization and ecological environment. Based on the perspective of “human-ground coupling” and constructing an indicator system, comprehensively measure the coupling relationship between urbanization and ecological environment of the three major urban agglomerations in the Yangtze River Economic Belt, and analyze the coordination type and main control factors. The study found: (1) The overall urbanization and ecological environment coupling coordination degree of urban agglomeration reaches 0.38, the spatial dependence is strong, and the high and low clustering degree is higher; (2)There are some differences in the coupling relationship between urbanization and ecological environment in the three major urban agglomerations, and the spatial imbalance is more significant; (3)The “coordination” characteristics of the coupling relationship between urbanization and ecological environment have many types, and the lag-type coordination phenomenon of urbanization is more common, and there is a “weak” coordination problem at the same time; (4) The main controlling factors of urban agglomeration and eco-environment coupling in urban agglomeration changed from economic urbanization to population urbanization in the past decade; the Yangtze River Delta, the middle reaches of the Yangtze River and Chengyu were respectively affected by population concentration, construction investment and industrial pollution. Leading influence.