Study On Analysis And Optimization Of Cluster Structure Of Triangle Of Central China

The formation and development of urban agglomeration is becoming more and more perfect.It has become an important supporting point for regional economic development.The competition among regions has also changed from competition among cities to competition among urban agglomerations.The cluster structure of urban agglomeration refers to the internal relations and external morphological structure that a group of cities with interaction.And it has the same economic connotation with competition of urban agglomeration,so the cultivation of competitiveness of urban agglomeration will eventually fall on the cluster structure.Triangle of Central China is positioned as new growth pole of China's economic development,and its construction and development will accelerate the central region's economic development.While affirming its status,it should also be noted that whether the cluster structure of the urban agglomeration in Triangle of Central China can play a cluster effect and match its expected target and function orientation,and whether it can achieve cross-regional cooperation and meet the objective requirements of resource allocation efficiency optimization.At present,most domestic and foreign scholars focus on the construction and development perspective to study the Triangle of Central China,few scholars focus on the cluster structure,and the study is only for the Wuhan city circle,Changsha-Zhuzhou-Xiangtan city group,the Central Poyang Lake city group of the three sub-groups.The Triangle of Central China has not been analyzed as a whole,which leads to the lack of integrity and pertinence of the research structure,so the practical guidance is weak.Therefore,this paper tries to from cluster structure perspective to identify cluster internal interaction and external structure of the Triangle of Central China.It also determines the coordination of the cluster structure and the development of the triangle of Central China and finds out the short board that restricts the development of urban agglomerations to improve the pertinence of cooperative development measures.The full text is divided into five parts,six chapters.The first part is the introduction,which mainly introduces the background,significance,content and method of the research,and defines the connotation of Urban Cluster Structure according to the research status of the domestic and international research on the urban agglomeration in the Triangle of Central China.The second part is the evolution of the Triangle of Central China,which is divided into four stages: the loosening development,the expansion of the polar city,the development of the city group and the formation of the urban agglomeration in combination with the level of social development and the national policy orientation.Then it summarizes and organizes its evolutionary foundation and motivation.The third part is the identification of the cluster structure of the Triangle of Central China,including Chapter 3 and Chapter 4.According to the connotation of urban cluster structure,we use the modified gravitational model to identify the internal relationship between the urban agglomerations in the Triangle of Central China,and use the Complex element correlation entropy to estimate the urban quality and define the economic distance,and then use the gravitational model to measure the internal action intensity.The results show that the overall intensity of cluster linkage is low,the interaction among the cluster is divided by province,and the spatial distribution is internal strong and external weak.At the same time,using the method of social network analysis,we identify the external structure of Triangle of Central China from the three aspects of centrality,network density,cohesive subgroup,and put forward the different features of the multi-center structure,discrete network structure,plate splicing structure etc.The fourth part is the optimization strategy.We propose the obstacles of clustering formation of Triangle of Central China based on the cluster structure recognition,and on this basis,we put forward the goal and path of optimizing the structure of urban agglomeration,which is on the premise of perfect urban system to play a leading role,based on infrastructure construction to form a network foundation,and taking the cross regional cooperation mechanism as the driving force to strengthen plate agglomeration.The fifth part is the summary and outlook of the full text.