转型期中国城市网络空间结构演变——基于商业银行分支机构网络的视角

21世纪以来，城市网络研究成为全球和区域城市体系研究关注的焦点，但当前对国家层面城市网络空间结构演变的研究还较少涉及。基于2001—2016年间中国商业银行网点空间分布变化数据，运用社会网络分析方法，对中国城市网络空间结构的时空演变特征进行了研究。研究结果显示：中国城市网络结构由等级化向网络化转变，具体表现为在轴辐结构基础上向连通性更强的链锁网络演进；与此同时，城市网络同时呈现少数城市网络连接度的极化以及多中心扩散的特征。区域层面，东部沿海地区，特别是长三角、京津冀和珠三角三大区域的城市网络发展较为完善，与其它区域的差距持续拉大，但山东、东北和福建等省份与区域内外的联系增长也较快。大多数城市的出度和入度差异明显，但这一差异正在逐渐缩小。

CHANGING SPATIAL STRUCTURE OF CHINA'S URBAN NETWORK IN TRANSITION: AN ANALYSIS BASED ON BRANCH NETWORK OF COMMERCIAL BANKS IN CHINA

Since the new century, China's economy has undergone great transition, mainly from a socialist economy to a socialist-market one. At the same time, the influence of the globalization on China's economy also has been increased. Under such circumstance, the spatial structure of the urban network in China has been constantly changed. But this process is largely under-studied. Based on the location data of commercial banks in China, we use techniques of social network analysis and analyze the changing spatial structure and the urban network in China between a transitional period of 2001 and 2016. It is found that the structure of the urban network in China has transformed from a hub-spoke one to an interlocking one, in which both connection strength and number of links between cities in China have been great improved. While at the same time, the results show both trends of concentration and decentralization of China's urban network.