- 规划与建设
- 文章编号：1009-6000(2026)04-0092-07
- 中图分类号：F299 文献标识码：B
- Doi：10.3969/j.issn.1009-6000.2026.04.013
- 作者简介：刘梦雨，科学技术部科技人才交流开发服务中心；
沈丽珍，通信作者，南京大学建筑与城市规划学院；
杨婧艺，中关村高科技产业促进中心。
- 基于“城市对”二元组的城际经济联系模式探究——以长三角城市群为例
- A Study on Economic Linkage Model Based on “City Dyad”: A Case Study of Yangtze River Delta Urban Agglomeration
- 刘梦雨 沈丽珍 杨婧艺
- LIU Mengyu SHEN Lizhen YANG Jingyi
- 摘要：
“城市对”是城市点对点联系的二元组合，作为城际联系网络的基本组合单元，对于城际联系网络的形成、城市合作指导具有重要作用。研究从“城市对”出发，以长三角城市群典型行业的企业投资数据为网络基础数据，运用社会网络分析、机器学习聚类算法等方法，探讨长三角城市群城际联系网络中“城市对”经济联系模式。研究结果表明：①长三角城市群“城市对”联系模式归总为 7 类：高度一体化型、成熟典型、地缘邻近向心型、分工支配型、经济技术合作型、非地缘外溢型和地缘邻近基础型。②“城市对”链接具有明显的区域中心城市单核指向性；“城市对”链接依然受到空间距离和行政关系的较大掣肘，特别是存在明显的同省域经济联系偏好和省域链接差异性；“城市对”链接偏好与交通联系、技术进步具有密切关联，且受到“城市对”二元组内城市个体发展水平的重要影响。 - 关键词：
城市对；城市网络；经济联系模式；聚类算法；长三角城市群 - Abstract: “City dyad” is a binary combination of point-to-point contacts between cities. As the basic unit of intercity linkage network, it plays an important role in the formation of intercity linkage network and urban cooperation guidance. Starting from “city dyad”, this paper takes typical industries and enterprise investment data of Internet industry in the Yangtze River Delta Urban Agglomeration as the basic data of the network, and uses social network analysis method and machine learning clustering algorithm to explore the heterogeneity of intercity linkage network, "city dyad" economic linkage mode. The results indicate that: (1) The “city dyad” linkage mode in the Yangtze River Delta Urban Agglomeration can be classified into 7 categories: highly integrated, mature and typical, geo-adjacent centripetal, division of labor dominated, economic and technological cooperation, non-geographical spillover and geo-adjacent basic “city dyad”. (2) The “city dyad” linkage has obvious single-core directionality of regional core cities, and the linkage mode is greatly affected by the hinterland scope of core cities. The “city dyad” linkage is still greatly restricted by spatial distance and administrative relationship, especially there is obvious economic linkage preference and provincial linkage difference in the same province. The link preference of “city dyad” is closely associated with traffic link and technological progress, and is greatly affected by the development level of individual cities in the “city dyad” binary group.
- Key words: city dyad; city network; economic linkage pattern; clustering algorithm; Yangtze River Delta Urban Agglomeration