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