Research on urban network structure in Chengdu-Chongqing Economic Circle based from the perspective of"flow space"
It is of great significance to lead Chengdu-Chongqing economic circle to stride for-ward to world-class urban agglomeration,promote regional economic integrated development,and boost domestic circulation with regional circulation for accelerating the formation of a new development pattern with domestic circulation as the main body and the domestic and interna-tional dual circulation promoting each other.Based on the perspective of urban network struc-ture,the urban network structure characteristics and differences of Chengdu-Chongqing Econom-ic Circle are described by using the social network analysis method and the visualization func-tion of ArcGIS spatial analysis tool on the basis of constructing the urban spatial connection net-work of transportation,economy,population and information by using the data of railway and highway passenger transport frequency,regional outward function influence quantity,population migration quantity and Baidu index.Finally,the optimization strategies and suggestions of the network structure of Chengdu-Chongqing economic circle are put forward from different per-spectives.The results show that:(1)The urban network shows a dual-core circle radial spatial structure dominated by"Chengdu and Chongqing",and the overall network connection presents an"unbalanced"pattern.(2)The embryonic form of urban system is emerging,the network structure is not stable,and the resilience needs to be further improved.The overall index calcula-tion shows that the tightness of the urban network is population＞information＞economy＞trans-portation.(3)The"core-periphery"effect is significant,the"collapse"phenomenon is obvious,and there is no strong secondary central city.(4)The distribution of cohesive subgroups is high-ly different,and the spatial distribution of the cities in the agglomerated subgroups is basically in line with the geographical proximity.
network structureflow spacecentralityagglomerative subgroupChengdu-Chongqing region
NETL
NSTL
万方数据
