“高铁流”视角下的中国城市网络层级结构演变研究

The structure evolution of China’s urban networks from the perspective of HSR flows

中国短时间内大规模的高铁建设对城市可达性和连通性产生了巨大影响。随着"流空间"理论的兴起,高铁建设对城市网络的影响更值得关注。基于此,本文采用2007—2014年历年高铁列车频次全样本数据,通过构建高铁节点优势度指数、高铁线路强度指数、熵指数等定量分析模型,试图探讨基于高铁列车频次的中国城市网络结构及其变化。结果表明:随着高铁网络的空间扩展,城市之间的连通性不断加强,城市网络层级结构逐渐均质化演变;基于高铁网络的中国城市体系结构趋向于多中心化;长三角地区的高铁网络相较于其他地区更加完善。

China’s massive high-speed rail construction in a short time has exerted a huge impact on accessibility and connectivity of cities. Based on "Flow space" theory, the impact of high-speed rail construction on urban network is more noteworthy. According to 2007-2014 HSR time schedule data, this paper analyses development of urban network structure influenced by HSR networks. By calculating DIT, RSL, ODIc, ODIl indexes, it explores the urban networks structure and changes in the comprehensive Chinese HSR networks. The conclusions are: with the spatial extension of HSR networks, the connectivity of cities was strengthen. China’s urban system structure connected by HSR networks became more polycentric. Compare to other regions, HSR networks are more completely developed in the Yangtze River Delta region.