Study on the measurement and spatio-temporal differentiation of the coupling coordination of "Two Mountains" in the Pearl River Delta urban agglomeration
Based on the panel data of the Pearl River Delta urban agglomerations from 2010 to 2020,the index evaluation system of"Two Mountains"was constructed.Entropy weight method,coupled coordination degree model and GIS method were used to analyze the coupling coordination degree and spatio-temporal differentiation characteristics of the Pearl River Delta urban agglomerations.The results show that:1)The system indices of the"Two Mountains"in the Pearl River Delta urban agglomeration show an increasing trend,respectively rising from 0.500 1 to 0.525 8 and 0.264 0 to 0.506 9(2019).The development status of the"Two Mountains"is generally good.From the spatial level,the"Clear Water and Green Mountain"index in the central region of the Pearl River Delta urban agglomeration is growing rapidly.East wing of the"Gold Mountain and Silver Mountain"index has been leading;2)The average value of the coupling coordination degree of"Two Mountains"in the Pearl River Delta urban agglomerations showed an upward trend,increasing from 0.589 0 to 0.697 4,and the coupling coordination type gradually increased from the forced coordination to the primary coordination.From the spatial level,the coupling coordination degree of"Two Mountains"in the eastern wing showed a rapid development trend.
Coupling coordinationClear Water and Green MountainGold Mountain and Silver Mountainspatio-temporal differentiationPearl River Delta urban agglomeration