高铁网络结构特征与区域经济协调发展OA北大核心CHSSCDCSSCI

Regional coordinated development strategy is the main driving force for promoting high-quality eco-nomic development and building domestic circulation,and an inherent requirement for achieving common prosperi-ty.Perfect transportation infrastructure is an indispensable material condition for implementing the coordinated de-velopment strategy of the regional economy.High-speed rail greatly compresses the time and space distance and promotes the circulation of talents,information,and capital,and thus plays an important role in promoting the inte-gration and redistribution of internal and external resources.Based on the 2014-2019 inter-city high-speed rail train operation data and socio-economic data,this paper analyzes the structural characteristics of the dual high-speed rail network and adopts the quadratic assignment procedure(QAP)to empirically analyze the impact of the high-speed rail network on the coordinated development of the regional economy.The results show that with the promotion of high-speed rail network construction,the high-speed rail network connectivity of the Yangtze River Delta urban agglomeration and the Yangtze River middle reaches urban agglomeration has significantly improved,while the network structure of the Chengdu-Chongqing urban agglomeration is relatively loose.The service intensity of high-speed rail has increased,and a radial network pattern with provincial capitals as the center has gradually formed.From the perspective of node attributes,in the Yangtze River Delta urban agglomeration,the city centrality and passenger flow organization coefficient are generally high.In the Yangtze River middle reaches urban agglomer-ation and Chengdu-Chongqing urban agglomeration,the city centrality and passenger flow organization coefficient are polarized,and the provincial capital city is significantly higher than other cities.Additionally,the improvement of high-speed rail network connectivity narrows the regional economic development gap.The improvement of high-speed rail operation services enhances the coordination of economic development in the Yangtze River Delta urban agglomeration but reduces that of the other two urban agglomerations.The difference in passenger flow agglomera-tion ability is the primary factor affecting the economic development gap,and the effect of centrality difference de-creases year by year.Therefore,the following suggestions are put forward.First,we can further optimize the layout of the high-speed rail network,speed up the construction of the high-speed rail network in central and western re-gions,and guard against the"siphon effect".Second,considering the actual needs of regional development,we can implement differentiated operational service improvement strategies.Third,efforts should be made to enhance regional self-development capabilities,accelerate the complementarity and integration of regional economic develop-ment,and form a good division of labor and cooperation system.