长三角城市群经济网络结构特征及影响因素——基于社会网络分析方法

On Structural Features & Influence factors of Economic Network in Yangtze River Delta City Group: Based on Social Network Analysis

借鉴改进的引力模型,采用SNA与QAP回归分析,对长三角经济圈16个中心城市的经济网络结构及其影响因素进行分析。研究结果显示:1.长三角城市群各城市间的经济联系在逐年加强。2.十年间,上海、苏州、无锡等对其余城市的经济起着辐射作用,泰州、镇江、南京等对其他城市的资源与要素有所依赖。无锡、常州、南京在长三角经济圈中承担着"中介"与"桥梁"的作用。3.可将长三角城市群划分为四类子群,子群内各城市间经济关联密切。4.QAP分析说明,长三角经济圈中较强的经济联系常会发生在地理位置邻近、产业结构相似、要素集聚与扩散能力较强以及全球化水平较高的城市之间。最后,为长三角城市群网络化发展提供政策建议。

Based on the method of SNA and QAP regression analysis, this paper uses the improved urban gravity model to make an analysis of the economic relationship and its influence factors among 16 central city clusters in Yangtze river delta economic circle. The results show that （ 1 ） The economic ties of the cities in Yangtze River Delta is strengthening; （2） In a decade, Shanghai, Suzhou, Wuxi have played some economic radiation effects to the other cities; and Taizhou, Zhenjiang, Nanjing have shown their dependence on other cities＇ resources and factors, while Wuxi, Changzhou, Nanjing play the role of a ＂intermediary＂ and ＂bridge＂ in the Yangtze River Delta economic circle; （3） The City Group in Yangtze River Delta can be divided into four subgroups and the cities in the subgroups have a close economic tie; （4） QAP analysis shows that the strong economic ties in the Yangtze River Delta economic circle often occur in cities, which have an advantage of geographical proximity, agglomeration and diffusion of factors with their similar industry structures and high level of globalization. Finally, this paper put forward some suggestions related with the network development of cities in Yangtze River Delta.