中欧班列节点城市物流网络结构分析

中欧班列是推进“一带一路”建设的重要载体，分析中欧班列节点城市物流网络结构有助于中欧班列的健康发展。通过改进的熵权法测算中欧班列节点城市物流业发展水平，采用修正的引力模型测算了节点城市间的物流联系强度，借助社会网络分析方法，实证分析了中欧班列节点城市物流网络的网络密度、网络中心性和凝聚子群。研究结果显示：中欧班列节点城市物流网络密度较小，城市间物流影响较小；节点城市中，苏州、重庆、北京、南京和武汉5个城市网络中心性指数最高，对其他节点城市影响较大，其他节点城市间的物流联系主要通过这几个城市的中介效应来实现；中欧班列发展初期，建议选择北京、重庆、苏州和兰州作为中转集货枢纽开展重新编组作业，当货量足以支撑更多城市开行直达班列时，建议选择北京、重庆、苏州、南京、长沙、沈阳和兰州作为枢纽节点建设中欧班列国别班列重新编组中心。

Analysis of the Logistics Network Structure of Urban along the China Railway Express

CHINA RAILWAY Express is the important carrierto promote the construction of the Belt and Road.Analyzing the logistics network structure of the city-region along the CHINA RAILWAY Express can promote the development of CHINA RAILWAY Express.The improved Entropy method was used to estimate the logistics development level of cities along the CHINA RAILWAY Express.The modified Gravity Model was used to calculate the spatial linkage between the cities along the CHINA RAILWAY Express.Usingsocial network analysis method,this article empirically analyzed the network density,network centrality and cohesion subgroups of the city.The results showed that:the density oflogisticsnetwork in cities along the CHINA RAILWAY Express is low,indicating the influence of logistics industry is weak between the cities.The top five cities which ranked by the network centrality index are Suzhou,Chongqing,Beijing,Nanjing and Wuhan.These cities have comparatively strong influence to others,and affectthe logistics linkagesamongother citiesthrough the intermediary effect.On the early stage of CHINA RAILWAY Express,choosing Beijing,Lanzhou,Suzhou and Chongqing as transit hubs to carry out reorganized operation of train is advisable.When the volume is sufficient to support more cities to operatea straight line,it is recommended to pickBeijing,Shenyang,Lanzhou,Nanjing,Suzhou,Changsha and Chongqing as transit hubs to carry out reorganized operation of trains.