Study On The Spatial Network Structure Of Tourism Economy In Yangtze River Delta City Clusters And Its Influencing Factors

In recent years,the pace of Yangtze river delta tourism integration continues to accelerate,and the tourism economic ties between cities continue to deepen.While the regional tourism economy is growing at a high speed in total volume,there are also structural imperfections,and the lack of proper understanding of the role of each city in the development of regional tourism is an important reason for the failure of regional tourism economy to develop in a coordinated way with high quality.Based on this,this paper takes 26 cities in the Yangtze river delta city cluster as the research object.,and based on the tourism economic connections among cities,this paper adopts the social network analysis method to construct the spatial network structure of tourism economy in the Yangtze river delta city clusters,and then studies the characteristics of the overall network structure and the status and role of each node city in the network.The results show that:(1)From 2007 to 2017,the intensity of tourism economic links between the node cities in the Yangtze river delta city clusters has been increasing,and the tourism economic links have gradually extended from the developed cities in the coastal areas such as Shanghai,suzhou,wuxi and hangzhou to other cities in the Yangtze river delta.However,there is still a large gap in the intensity of tourism economic links between the node cities.(2)From 2007 to 2017,the spatial network structure of tourism economy in the Yangtze river delta city clusters showed the characteristics of evolution from loose to close,from simple to complex,and from unreasonable to reasonable,and the spatial network structure of tourism economy was constantly optimized.(3)From the analysis of individual network structure characteristics,Shanghai has always occupied the leading core position and played the largest role in the network.From 2012 to 2017,Shanghai,suzhou,hangzhou,nanjing and hefei played the largest role in the network and had the strongest ability to control and influence the tourism economic links among other cities.Chuzhou,zhoushan,ma On Shan,yancheng,xuancheng,tongling and taizhou are all at a low level of centrality and structure holes.They are often attached to other node cities in the network and are mostly in a marginal position.(4)From the overall network structure characteristics,the spatial network density of tourism economy is continuously increasing,the robustness and cohesion of the network are constantly enhanced,and there is still a relatively obvious core-edge hierarchy among cities and the hierarchy gap is gradually narrowing.The regional tourism economic relation develops in the form of group,and the cities near or adjacent to each other are more likely to form a city combination.(5)The results of QAP correlation analysis show that the level of urban economic development,traffic accessibility,geographic spatial distance and tourism resource endowment are significantly correlated with the tourism economic network of the Yangtze river delta city clusters,while the industrial structure is not significantly correlated with the tourism economic network.The results of QAP regression analysis show that three variables,namely traffic accessibility,tourism resource endowment and regional economic development level,all have significant influence on the formation of tourism economic network in Yangtze river delta city clusters,and the influence degree decreases in turn.