On the coupling coordination of population-economy-space urbanization:a case study of the dual city economic circle in the Chengdu-Chongqing region
The Chengdu-Chongqing Economic Circle occupies a unique and important position in the overall strategy of national development.Based on the entropy method and the coupling coordination degree model,the population,economy,spatial urbanization level and coupling coordination of 44 prefecture-level counties(districts and cities)in Chengdu-Chongqing economic circle are analyzed.The results show that:(1)The spatial differentiation of economic urbanization level in Chengdu-Chongqing economic circle is the most significant,reflecting the great difference in economic development among cities.(2)In the process of urbanization,the Chengdu-Chongqing economic circle is dominated by spatial urbanization,which in turn domi-nates the economic urbanization and population urbanization.(3)There are obvious regional differences within the Chengdu-Chongqing economic circle.The urbanization level of Chengdu and the city proper of Chongqing is relatively high,and the ur-banization score decreases from inside to outside,forming a cascade differentiation.(4)The urbanization coupling level among population,economy and space or between one another in Chengdu-Chongqing economic circle is low,staying generally in the antagonistic stage.(5)Based on the level of coordination,it can be divided into four types.The coupling and coordination level of population-economy-space urbanization in Chengdu-Chongqing Economic Circle is low,and the strong support of the govern-ment in policy provides great development potential for the coordinated development of cities in Chengdu-Chongqing Economic Circle.
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