The Coordination Analysis on the Spatiotemporal Evolution Between Population and Economic Concentration: A Case Study of Chengdu-Chongqing Urban Agglomeration

The Chengdu-Chongqing urban agglomeration is an important population cluster and economic growth pole in southwest China. In the context of new urbanization, studying the coordinated development relationship between the population and economy concentration of Chengdu-Chongqing urban agglomeration is of great significance to the sustainable development of the region. Under the background of the change of regional development pattern, this paper introduces the methods of geographic concentration, inconsistency index and imbalanced index to analyze the spatiotemporal evolution and coordination relationship of population and economy of Chengdu-Chongqing urban agglomeration from 2010 to 2019. According to the evolution trend of spatiotemporal pattern, the coordination degree between population distribution and economic spatial pattern is analyzed. The results conclude that the spatial agglomeration patterns of population and economy in Chengdu-Chongqing urban agglomeration are highly similar. However, at the same time, the economic gap and population gap between different cities are expanding, and the number of cities in economic lagging areas is also gradually increasing. On this basis, it is suggested that policy makers should follow the law of urban agglomeration development and population flow, and continue to cultivate the dual-core pattern of Chengdu and Chongqing. At the same time, the size of individual cities should also be controlled. Finally, Chengdu and Chongqing should use their influence to radiate to the surrounding area and drive the development of the whole region.