城市群网络空间结构及其经济协调发展——基于长江经济带三大城市群的比较分析

The Spatial Network Structure of Urban Agglomeration and itsEconomic-Coordinated Development——Based on the Comparative Analysis of the Three Urban Agglomerations in the Yangtze River Economic Belt

合理有序的网络空间结构是实现城市群经济协调发展的重要支撑。基于2005-2016年长江经济带三大城市群的城市面板数据,首先采用社会网络分析方法定量识别了三大城市群的网络空间特征。在此基础上,构建空间计量模型检验了三大城市群的网络空间结构及其经济协调发展的异质性影响。结果表明,控制相关影响因素后,城市群空间网络水平的提升对其经济协调发展的直接促进作用普遍存在,但间接的空间溢出效应呈现明显差异。其中,网络化水平越高的城市群,正向空间溢出效应越明显,城市群经济协调发展水平越高。因此,强化城市间网络联系,形成联系紧密、功能互补的城市群网络空间结构有利于充分发挥正向空间溢出效应,实现城市群经济协调发展。

A reasonable and order spatial network structure of urban agglomeration is the important support to realize coordinated development of regional economy. Based on the urban panel data of the three urban agglomerations in the Yangtze River Economic Belt from 2005 to 2016, the spatial characteristics of the three urban agglomerations were quantitatively identified using the social network analysis. On this basis, the spatial econometric model is constructed to examine the spatial network structure of the three urban agglomerations and the heterogeneous influence of their coordinated economic development. The results show that after controlling the relevant influencing factors, the direct promotion of the spatial network level of urban agglomerations to their coordinated economic development is universal, but the indirect spatial spillover effect is obviously different. The higher the level of network is, the more obvious the positive spatial spillover effect is, and the higher the level of coordinated economic development of urban agglomeration is. Therefore, strengthening the network connection between cities and forming the spatial network structure of urban agglomeration with close connection and complementary functions are conducive to giving full play to the positive spatial spillover effect and realizing the coordinated economic development of urban agglomeration.