长三角地区城市城际联系度测度——基于物流数据视角的分析

Calculating on city network of the Yangtze River Delta Areas:from the perspective of Logistics data

基于我国大型物流企业长三角地区分支机构的城市联系数据,运用联锁网络模型,从聚合与互锁链接、城市网络距离、城际非对称性联系等方面对长三角地区城市网络进行了考察。结果显示:长三角地区的城市联系高度集中在多个中心城市之间,占据了网络的中心位置,外围城市各项指标落后,处于边缘位置;长三角地区城市网络正在形成多中心辐射、拉动外围城市协同发展的格局;上海市的核心地位不断提升,长三角地区以外的企业倾向于在长三角、中心城市设立分支机构,城市门槛效应在一定程度上影响了外地企业的落户选择;在长三角五大亚都市圈中,苏锡常、南京都市圈与上海市的联系最为紧密。

Based on the contact data of branches of large logistics enterprises in the Yangtze River Delta Area,this essay surveys the Yangtze River Delta network by the data from Aggregate City Interlock Links,Social Distance and Asymmetrical Relations between Cities. The results show that one hand,connectivity between center cities are highly concentrated and occupy the center position of the city network.; On the other hand,peripheral cities＇ indicators are behind in the edge position of the network; The Yangtze River Delta urban network is the formation of multiple centers stimulating economic growth of peripheral cities. In addition it is found that because of urban threshold effect the enterprises outside the Yangtze River Delta are due to select to settle in central cities rather than the core city,Shanghai. Suxichang and Nanjing metropolitan area maintains the closest contact with Shanghai.