Spatial evolution of urban co-opetition in Yangtze River Delta region based on regional integration
The national strategy of regional integration of the Yangtze River Delta(YRD)aims to improve the overall strength and international competitiveness of this region.This paper se-lects the YRD region,which participates in global competition,as a case study,starts from the co-opetition level of urban development momentum,and measures the competition and cooper-ation level of 41 cities in the region from 2006 to 2021.Using the methods of spatial Markov transfer matrix and overlapping community discovery model,this paper analyzes the spatio-temporal characteristics and interaction of urban co-opetition level in the study region.The re-sults show that:(1)With the overall upward development of the co-operation level,the spatial distribution pattern of the YRD region has gradually changed from the isolated island distribu-tion pattern centered on Shanghai,Nanjing and Hangzhou to the"sheet"continuous integrated spatial pattern of Shanghai-Nanjing cooperation and Shanghai-Hangzhou-Ningbo cooperation,and the function of the central part of the region has become more and more prominent.(2)From the perspective of the spatio-temporal transfer characteristics at the level of co-opetition,cities are affected by their own development with inter-type transfer inertia and path dependence,and most cities maintain strong stability both in their neighborhood and in their own transfer types;The neighborhood state strengthens the spatial concentration of low co-opetition cities in the re-gion and the spatial overflow of high co-opetition cities,driving the spatial diffusion of club convergence.Most of the cities with low neighborhood and low state are located in the periph-eral area of the YRD,while most of the cities with high neighborhood and high state are located in the core and central area.(3)From the perspective of network communities and overlapping cities,the level of co-opetition in the YRD region is constantly changing to network and team-work,which reflects the relationship between co-opetition within the YRD city circle.
urban co-opetition spacespatial Markov chainsoverlapping community discov-eryYangtze River Delta region