Spatio-temporal Evolution Track of Coupling Coordination of Transportation-Regional Economy-Ecological Environment in Shandong Provinc
To study the development level of the three sub-systems of transportation,regional economy and ecological en-vironment and the characteristics of spatio-temporal differentiation of their coupling coordination states in Shandong Pro-vince,based on the panel data of transportation,regional economy and ecological environment in Shandong Province from 2011 to 2020,the spatio-temporal differentiation characteristics and evolution rules of the degree of coupling coordination among transportation,regional economy and ecological environment in Shandong Province were studied by using the entropy weight method,coupling coordination degree model and nuclear density estimation.The results show that the coupling coordination degree among transportation,regional economy and ecological environment system in Shandong Province shows an increasing trend in the study period,the comprehensive evaluation level of ecological environment is better than that of transportation and regional economy in the past.The spatial distribution features of dual core and"center-periphery"are formed in space,and Qingdao,Jinan City always maintain a high level of coupling coordination degree of complex transport-regional economy-ecological environment system,while the development level of coupling coordination degree of the other cities gradually increases.The distribution pattern of high and low coupling coordination of Shandong Province is relatively stable,although the development of different cities is graded,the regional development difference has a decreasing trend.
coupling coordination degreespatio-temporal evolutiontransportationregional economyecological environ-mentShandong Province