| With the development of tourism transport,the Central Committee of the Communist Party of China(CPC)and the State Council issued the "Outline for the Construction of a Strong Transportation Country" and the "Outline for the Planning of a National Comprehensive Three-dimensional Transportation Network",which clearly put "The integrated development of transportation and tourism" once again to the high point.The tourism industry in Yunnan,Guizhou and Sichuan is in the stage of transformation from high-speed growth to high quality and intensive development,and the spatial pattern of high-speed transport dominance constituted by high-speed railroad,civil aviation transportation and highway is constantly reconstructed,which will have an important impact on the flow and allocation efficiency of tourism resources along the road network.Therefore,this paper took the high-quality development of "transportation-travel integration" as the entry point,aiming at the typical southwestern region of Yunnan,Guizhou and Sichuan as the case,and integrated multivariate comprehensive evaluation model,coupling coordination model,exploratory spatial data analysis method and gray system prediction model,etc.The spatial-temporal evolution patterns of the coupling coordination degree of high-speed transport dominance and tourism development efficiency in the Yunnan-Guizhou-Chuan region during 2011-2020 were systematically explored,as well as the trends in the next ten years.Meanwhile,various regression models such as geographic detector and spatial-temporal geographic weighted regression were introduced to demonstrate the internal and external driving mechanisms of the coupling coordination degree of transport and tourism.The optimization strategies of the coupling coordination relationship of regional transport and tourism were proposed.It was found that:(1)From the time-series perspective,the coupling coordination degree of high-speed transport dominance and tourism development efficiency in the whole region of Yunnan,Guizhou and Sichuan shows a process of "multi-polar polarization-gradual equilibrium-multi-level polarization" during 2011-2020;from the spatial perspective,the coupling coordination degree of transport-tourism shows a process of "multi-polarization-gradual equilibrium-multi-level polarization".From a spatial perspective,the spatial divergence characteristics of the coupling coordination degree of transport and tourism show a spatial divergence pattern of "high value in the central and low value in the north and south wings" at the beginning of the study period,and a divergence pattern of "high value and core gathering,low value and edge distribution" at the end of the study period.(2)The trend of "polarization" and "equilibrium" of the coupling and coordination degree of high-speed transport dominance and tourism development efficiency in the next ten years(2021-2030)of the study period in Yunnan,Guizhou and Sichuan regions is repeatedly alternating.(3)The explanatory degree of the internal factors for the spatial variability of the coupling coordination degree of high-speed transport dominance and tourism development efficiency is: transport coverage density > accessibility level > tourism development efficiency > location advantage degree,and there is a certain enhanced interaction between the factors.(4)The geographically and temporally weighted regression model with higher goodness of fit show that,the external influencing factors of GDP per capita,the proportion of secondary and tertiary industries,the ratio of built-up areas,altitude and surface roughness all affect the coupling coordination degree of high-speed transport dominance and tourism development efficiency in the Yunnan-Guizhou-Chuan region to a certain extent,displaying the spatial heterogeneity. |
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