经济流视角下的滇中城市群经济联系网络研究

The Economic Connection Network of Central Yunnan Urban Agglomeration from the Perspective of Economic Flow

从“流空间”视角出发,采取2021年云南统计年鉴滇中城市群截面数据,结合修正的引力模型测算滇中城市群的经济流强度,利用Ucinet、Arcgis软件,分析滇中城市群经济联系网络,探究滇中城市群的经济联系特征。研究结果表明:2020年滇中城市群经济流强度差距大,形成“1+2+2+2+4”城市网络结构层级,城市群经济网络联系较为松散;昆明市是滇中城市群经济联系网络中最核心的城市,对其他城市的控制和辐射能力最强;从宏观的滇中城市群经济流强度、微观的三次产业经济流强度来看,滇中城市群城市间的经济引力总是昆明-玉溪间的经济引力最强;滇中城市群经济联系网络中的凝聚子群内城市分布大多呈现地理邻近效应,各子群密度大小排序为:昆明与玉溪形成的子群>个旧与蒙自形成的子群=弥勒、楚雄和曲靖形成的跨界子群>泸西、建水、石屏、开远四座城市形成的子群。

From the perspective of“flow space”,this paper adopts the cross-section data of the 2021 China Urban Statistical Yearbook of Central Yunnan Urban Agglomeration,combined with a modified gravity model to calculate the economic flow intensity of Central Yunnan Urban Agglomeration.Using Ucinet and Arcgis software,the economic connection network of Central Yunnan Urban Agglomeration is analyzed,and the economic connection characteristics of the Dianzhong Urban Agglomeration are explored.The results showed that:(i)In 2020,the economic flow intensity of the central Yunnan urban agglomeration had a large gap,forming a“1+2+2+2+4”urban network structure hierarchy,and the economic network of the urban agglomeration was relatively loose.(ii)Kunming is the core city in the economic connection network of the central Yunnan urban agglomeration,with the strongest control and radiation over other cities;(iii)From the macroscopic economic flow intensity of the central Yunnan urban agglomeration and the microscopic economic flow intensity of the three industries,the economic attraction between Kunming city and Yuxi city of the central Yunnan urban agglomeration is always the strongest.(iv)Urban agglomeration in the central Yunnan economic links in a network of condensing subgroups within urban distribution mostly shows geographical proximity,and the subgroup has the closest connection is the subgroup of Kunming city and Yuxi city;secondly,the subgroup of Gejiu city and Mengzi city,equals to the subgroup of Mile city,Chuxiong city,and Qujing city;thirdly,the subgroup formed by the four cities of Luxi,Jianshui,Shiping,and Kaiyuan.