城市群网络联系的幂律分布规律与层级结构特征  

Power-Law Distribution Pattern and Hierarchical Structure Characteristics of Urban Agglomeration Network Linkages

作　　者：盛广耀[1,2] Sheng Guangyao

机构地区：[1]中国社会科学院大学应用经济学院 [2]中国社会科学院生态文明研究所,北京100710

出　　处：《区域经济评论》2024年第4期110-118,共9页Regional Economic Review

基　　金：中国社会科学院智库基础研究项目“城市群网络协同效应与治理模式研究”(GDZK-2021-010);北京市自然基金项目“基于城市水文模型模拟及深度学习算法读取视频积水信息的城市暴雨积涝临界雨量分析研究”(8222018)。

摘　　要：城市群的网络联系存在幂率分布规律,在这一规律的影响下,城市网络是“有等级倾向的网络”,其网络结构必然表现为明显的层级特征。首先,基于城市引力模型测度城市之间的相互联系,实证检验城市群城市间联系强度的概率分布规律,证明城市网络联系符合幂律分布的特征,且具有标度不变性。城市群的联系网络为服从幂率分布的无标度网络。然后,基于头尾断裂法对城市群城市网络的层级结构进行了划分和比较分析。尽管不同城市群城市网络的规模、强度和发育程度存在较大差异,强关联关系的空间形态也有明显的方向性不同,但其网络结构都具有明显的“核心—边缘”层级特征。There is a power distribution law for urban networks in urban agglomerations.Under the influence of this law,urban networks are“networks with hierarchical tendencies”,and their network structures are necessarily characterized by obvious hierarchical features.First,based on the city gravity model to measure the interconnectedness of cities,the probability distribution law of the strength of inter-city linkages in urban agglomerations is empirically examined,and it is proved that the city network linkages conform to the characteristics of the power law distribution and are scale-invariant.The city network linkages in urban agglomerations is a scale-invariant network that follows a power-law distribution.Then,the hierarchical structure of the city network of the urban agglomeration was divided and comparatively analysed based on the head/tail breaks method.Although there are significant differences in the size,strength and development of the city networks of different urban agglomerations,and the spatial patterns of strong linkages also differ in direction,their network structures all have obvious“core-edge”hierarchical characteristics.

关 键 词：城市群 城市网络 幂律分布 头尾断裂法 网络分析 

分 类 号：F290[经济管理—国民经济]