Evolution Analysis Of The Spatial Structure Of Yangtze River Delta Based On High-speed Rail Passengers Flow

The theory and perspective of urban and regional studies are beginning to change under the influence of globalization and information.It has gradually formed center flow theory characterized by flow,network and corporation,and the relevant measure of different scales of flowing space made up of varies dynamic flows based on cooperative relationship,which provide new theory perspective and practical methods.Meanwhile,Yangtze River delta,as an important global city-region in our country,the relevant research about the spatial structure has become the focus in regional studies.In recent years,the spatial structure of Yangtze River delta has constantly developed and changed,and also shown up obvious traffic guidance.Especially,with the regional high speed railway(CRH)going into operation from 2006 and the density of the subsequent rail lines increasing,the traditional spatial pattern of Yangtze River delta has got a big change.Based on the above background analysis,and combined with the relevant research about space of flow,traffic flow,and the spatial structure of Yangtze River delta at home and abroad,the article argues that the research on the spatial structure of Yangtze River delta has certain necessity and innovation form the high-speed rail passengers flow perspective,and based on the dynamic relational data.Based on the above core argument,the article takes "Great Yangtze River Delta" as the research scope including Jiangsu,Zhejiang,Anhui province and shanghai,and discusses the spatial structure and the evolution characters of Yangtze River delta with high-speed rail flights as the surrogate data of the actual traffic passengers flow in Yangtze River delta from 2008-2014,and various quantitative research methods.The organization of this article is mainly from the dynamic evolutionary and static structural perspective.Under the dynamic evolutionary perspective,the article mainly targets the contact characteristics between cities,cities' aggregating features and regional multi-centricity to explore the evolution characteristics by year after year analysis,and with holistic perspective to further detailed discuss the evolution trend.Meanwhile,the article analyzes the core area from core cities' sphere of influence and the core circle.Under the static structural perspective,the article mainly aims at the more stable structure of Yangtze River delta formed from 2014 to discuss its manifestation and the reason behind.Based on the two parts quantitative analysis above,this article considers that there are three characteristics of the spatial structure evolution of the whole region in Yangtze River delta:gradually networked spatial connected pattern,relatively stabilized hierarchical spatial structure,and gradually highlighted polycentric structure.In the core region,the influence sphere of three core cities is mainly from the region consisted by Shanghai,Nanjing,Hangzhou,and Ningbo to the surrounding region.To a certain extent,the influence sphere of Hangzhou is covered by Shanghai and Nanjing.And the evolution of the core circle shows up the characteristics of expending from the center to the periphery.With the more stable spatial structure of Yangtze River delta gradually taking the shape in 2014,the article argues that there has been a relatively true,more stable,unified new space and structure in 2014,which is composed of the stable,high-density core area and the extending differentiated peripheral corridors by the spatial explanation of several closed connected town clusters by faction analysis and the contrast of region development and so on.At last,two innovation points about research perspective and evolution study and two limitations about data itself and short time span are simply discussed in this paper,and the flowing studies are given an expectation.This article can be summed up into 5 parts.Chapter ?:Introduction.This chapter mainly makes a systematic explanation on the perspective selection of the high-speed rail passengers flow,and the necessity and significance of the discussion on the evolution study,which including research background,objectives,and the related research both at home and abroad.Chapter ?:Research design.This chapter mainly gets ready for the quantitative analysis of chapter? and ?,which including research scope,methods,presupposition,framework and data acquisition and processing.Chapter ?:Dynamic evolution analysis.This chapter discusses the evolution characteristics including the whole and the core region of Yangtze River delta.On the whole level,the chapter analyses the evolution characteristics of networking,hierarchy and polycentrity year by year with relation intensity,aggregation intensity and the first and second connection.And also in a holistic perspective to explore the problem with variable coefficient,Gini coefficient and other indices.On the core level,on the one hand,the chapter draws a comparison of the influence sphere between the core cities of Shanghai,Nanjing and Hangzhou.On the other hand,which builds up the evolution pattern of the core circle.Chapter ?:Static structure analysis.This chapter aiming at the more stable spatial structure of Yangtze River delta in 2014,discusses the formation,the space representation,and its reasons.Chapter ?:Conclusion and discussion.The chapter summarizes the paper,puts forward the innovation and limitation of the research,and looks forward the flowing studies.The whole thesis contains about 44 000 words,70 pictures and charts.