| China has achieved lots of results during its development in recent decades,but there are also regional differences and uneven development.As China's economy enters a stage of high-quality development,the current goal and direction is to gradually narrow the regional gap and coordinate regional development.Moreover,as the essential requirements of modern economic development are openness,division of labor and cooperation,a well-coordinated regional economy can enable regions with different geographical locations,factor endowments and industrial structures to assume different economic functions and achieve economies of scale and agglomeration effects that cannot be achieved by a single isolated market.The Yangtze river delta is currently the sixth largest urban agglomeration in the world,with the advantage of population size.With the development of China's economy and the improvement of residents' consumption level,it is likely to rank among the top three or even top two in the world in the future.If the economic and social development of the Yangtze river delta wants to jump,the integration is imperative.From a global perspective,regional cooperation is the general trend of world economic development.Domestically,urban agglomeration is becoming the main engine leading the country's economic transformation and development and the main front of innovative development.At present,most of the researches on regional integration are based on the connection degree of specific projects such as economy and transportation,but seldom evaluate the development level of integration from the perspective of space.Due to the limitation of regional economy and region,the spatial structure between cities in the region has obvious characteristics.Therefore,it is necessary to analyze the spatial network of urban agglomerations in the Yangtze river delta,and analyze the relationship between cities,so as to promote the development of integration.This thesis is based on combing the latest development of urban network research at home and abroad and relevant models of urban network.According to the situation of the development of the Yangtze river delta urban agglomeration integration,from two dimensions of passenger transport and the enterprise layout,we build urban agglomeration in the process of the development of infrastructure and economic development of the network model and discuss the Yangtze river delta urban agglomeration in the process of the integration of network characteristics and the relations between the two,providing suggestions for promoting the development of regional integration.This paper mainly uses the social network analysis method to construct the city network model,carries on the quantitative analysis to the relations between the cities.Then,using the qualitative analysis method,I analyzed the characteristics and interrelationships of the urban agglomeration network in the Yangtze river delta according to the urban network development theory.Combined with geography,planning and other disciplines to provide a basis for the analysis of the spatial characteristics of the urban network,I integrate multiple disciplines for analysis,and comprehensively analyze the characteristics of the Yangtze river delta urban agglomeration network.This paper mainly includes six aspects: the first part is the research background and significance.Regional integration is a trend under the background of globalization.The export-oriented economy of the Yangtze river delta city cluster is obvious,and Shanghai aims to build a global city.How to improve competitiveness through regional cooperation and better participate in the international division of labor is not only a problem for the Yangtze river delta city cluster,but also a problem for China to solve.The second part is a theoretical and research review,which provides theoretical and methodological support for empirical research by combing relevant theories of urban network and regional integration.The third part analyzes the development status of the Yangtze river delta urban agglomeration,including the regional definition of the Yangtze river delta urban agglomeration,the development status and the process and necessity of the integration of urban agglomeration.The fourth part is empirical research.The social network analysis method is used to analyze the integrated network space of the Yangtze river delta urban agglomeration,and the traffic and economic network based on passenger traffic flow,enterprise network is constructed to analyze the network relationship between cities in the integration process.In the construction of traffic network,I use the train frequency and bus frequency between cities as the traffic flow between cities.The results show that the transportation network of the Yangtze river delta urban agglomeration has obvious hierarchical system and regional differences.Shanghai is the absolute transportation core.The degree of intercity networking in Jiangsu province is obviously higher than that in Zhejiang province.Traffic links between cities in Jiangsu and Zhejiang provinces are significantly lower.In building the economic network,I adopted the subsidiary layout of fortune's China's top 500 enterprises as the economic connection between cities.The study found that Shanghai,as the economic center of the Yangtze river delta urban agglomeration,is closely connected with cities in Jiangsu province.There are fewer links between cities in the province.In addition to close ties with Shanghai,cities in Zhejiang also maintain good ties with Hangzhou.Cross-provincial economic links remain weak.The fifth part is to use entropy weight method to give weight to each evaluation index of the integration level of the Yangtze river delta urban agglomeration,in order to get the score of economy,culture,transportation,public service,ecological environment and the comprehensive score of the integration level.The sixth part is the conclusion and prospect.According to the research results,it puts forward relevant suggestions to promote the integration of the Yangtze river delta urban agglomeration,as well as relevant research prospects.By sorting out the status of the integration of Yangtze river delta urban agglomeration,I analyzed the Yangtze river delta urban network from the perspective of passenger transport and enterprise subsidiaries.The main conclusions are as follows: 1.Shanghai is the absolute center of the urban agglomeration network.Cities in Jiangsu province have advantages in passenger transport and external attention.In addition to the advantages of Hangzhou in setting up subsidiaries,other cities in Zhejiang province are important destinations for the business development of large companies,showing the characteristics of adjacent diffusion.Peripheral cities still lack the degree of acceptance of central cities.2.The urban agglomeration passenger transport network is constructed with a multi-center network structure.And there were significant differences between regions.The degree of traffic connection between cities in Zhejiang province is obviously lower than that in Jiangsu province.3.Based on the top 500 listed companies,I built the urban economic network.As an important node in the economic connection of the Yangtze river delta urban agglomeration,Shanghai has become an important bridge linking Jiangsu and Zhejiang.Direct economic links between the cities of Jiangsu and Zhejiang are insufficient.I learned more about the relationship and role of cities.Therefore,this paper puts forward relevant policy Suggestions to promote the integration of the Yangtze river delta.1.There are obvious regional differences in the cyberspace of the Yangtze river delta urban agglomeration.The government should strengthen the top-level design,promote the compilation and implementation of the Yangtze river delta regional planning,and coordinate to solve regional development problems.We should deepen the models and scope of regional cooperation,strengthen cooperation and exchanges in trans-regional infrastructure construction,regional industrial cooperation and environmental protection,and promote regional integration.2.The urban agglomeration network of the Yangtze river delta is characterized by a multi-center network structure,with Shanghai,nanjing and Hangzhou as the regional core.The state should improve the level of transportation between regional peripheral cities and central cities,strengthen the infrastructure construction of peripheral cities,and reduce the resistance to contact with central cities.The government should also improve the industrial level of central cities,guide the industrial transfer and division of labor in central cities,strengthen the main role of enterprises,and provide a good environment for enterprises to operate across regions,so as to form a reasonable division of labor pattern. |
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