Research On The Spatial Characteristics And Evolution Of My Country's Inter-provincial Internal Circulation Networ

At present,the domestic and international situation is undergoing profound and complex changes,and the global economy lacks the driving force for growth.Therefore,the Fifth Plenary Session of the 19 th CPC Central Committee proposed to "accelerate the construction of a new development pattern with the major domestic cycle as the main body and the double domestic and international cycles promoting each other".The Chinese government proposed to give full play to the advantages of China’s super-large market,effectively tap and stimulate the potential of strong domestic demand,and make investment and consumption rely more on the domestic market.However,taking the domestic circulation as the main body means that the inter-provincial barriers should be broken down and a wide range of division of labor and economic relations should be established.Therefore,under the new development pattern,the study of economic internal circulation from the perspective of the overall network cannot be ignored,and the development of provincial internal circulation network should be placed in the first place.Based on this,this thesis constructs inter-provincial circular network with 31 provincial capitals as network nodes and inter-city economic links as network connections.Taking this as the research object,this thesis quantitatively analyzes the intensity of inter-provincial economic links between nodes and the total amount of economic links of the network itself during 2011-2021,and then reveals the spatial characteristics and evolution of inter-provincial circular network.To improve the inter-provincial circular network,accelerate the construction of new development pattern to provide relevant reference.First,the thesis combs domestic and foreign literature related to economic recycling network,on the basis of which the related concepts and theoretical basis are discussed,and analyzes the formation and development of inter-provincial recycling network.Secondly,the traditional gravity model is introduced and modified,and the inter provincial cyclic network model is constructed by combining social network analysis method.Then,the city quality score of each node is calculated by using the constructed comprehensive evaluation index system of city quality and entropy method,and its evolution process is analyzed.The shortest road distance between each node is obtained by using Baidu map API retrieval tool,and then the economic connection intensity of inter-provincial circular network is quantitatively analyzed during 2011-2021.Arc GIS software is used to explore the spatial characteristics and evolution process of the network from the space-time dimension.Finally,using the social network analysis method,based on the economic connection intensity data of the inter-provincial circular network,the spatial characteristics and evolution of the inter-provincial circular network were analyzed from the perspectives of the whole,the local and the individual with the help of UCINET software.The conclusions are as follows:(1)The inter-provincial circular network is gradually improved,and the spatial layout of the network is increasingly tight and complex.(2)The inter-provincial circular network presents the spatial distribution characteristics of "sparse in the west and dense in the east,weak in the west and strong in the east",and the network hierarchy is increasingly clear.(3)The inter-provincial circular network economic connection presents "head effect" and "Matthew effect" in space,and node distance is an important influencing factor.(4)The spatial structure of inter-provincial circular network is relatively loose,and there is huge space for development.(5)The spatial distribution of "small groups" in the inter-provincial circular network is more uniform and reasonable.Finally,according to the conclusion,the following four suggestions are put forward: strengthen the overall planning and guidance of the region,maximize the role of core nodes,drive the overall quality of the region to improve,improve the inter-provincial circulation network;Optimize the rational allocation of resources,promote regional coordinated development,and accelerate the construction of a new development pattern;Improve the traffic network,shorten the distance between nodes;We will strengthen the cultivation of new core node cities and balance the spatial distribution of inter-provincial circular networks.