Spatial-Temporal Evolution of the Coupling Coordination Relationship between Urbanization and Atmospheric Environment in the Yangtze River Economic Belt, China

Based on the coupling coordination degree model and the exploratory spatial data analysis method, we established the coupling coordination relationship between urbanization and atmospheric environment and explored the spatial-temporal evolution characteristics of the coupling coordination degree of 11 provinces in the Yangtze River Economic Belt (YEB) from 2003 to 2017. The results indicated the following: (1) The level of urbanization increases linearly, and the atmospheric environment level shows a fluctuating upward trend. (2) The types of coordination gradually change from “Seriously uncoordinated development with urbanization lag” to “Superiorly coordinated development with atmospheric environment lag”. The spatial distribution of coordination shows the characteristics of “high in the eastern region and low in the central and western region”. Regarding temporal evolution, the coupling coordination degree of the region gradually increases, and the spatial differences between provinces gradually narrow. (3) Significant spatial autocorrelation is observed between the coordination of urbanization and atmospheric environment, which weakens over time. The local agglomeration mode shows that the “High-High” cluster areas are in the lower reaches and the “Low-Low” cluster areas are mainly in the middle or upper reaches. This study contributes to promoting the sustainable development of the Yangtze River Economic Belt and provides basic data and research perspectives for further investigation of the relationship between urbanization and atmospheric environment.

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