| Yangtze River Economic Belt is the second largest economic zone,which is the most competitive and development potential economic zone after following Chinese coastal economic.It is particularly important to start the construction of the Yangtze River Economic Belt when the economic development of China goes into a "steady growth,structural adjustment," important period.In accordance with the country's top-level design,the Yangtze River Economic Belt will become not only the global influenced inland economic zone and the new support belt to promote the national economic growth,but also the demonstration zone of the coordinated development of the East,Central and the West,and the coastal border along the full of liberalization.Although in recent years the provinces along the river achieve a rapid socio-economic development,tridimensional transportation network initial formation,but as a huge area that contains 9 provinces and 2 cities,the difference of resource endowments and economic development between different regions inside is huge.The integrated regional development is far from the formation of the pattern.Internal fragmentation,non-equilibrium of the development is still obvious.In the developing situation of the Yangtze River Economic Belt,to strengthen the multi-angle study of the dynamic evolution in different periods and spatial structure of the Yangtze River Economic Belt contributes to the cognitive and grasp the regional stage of development in order to adjust regional development strategy.So this study choose 110 prefecture-level cities within the Yangtze River Economic Belt as the main object,analysis on the spatial pattern of the Yangtze River Economic Belt,accessibility pattern,the pattern of urban system,the city "field" Pattern Contact pattern with traditional methods of mathematical statistics and space analysis,to explore the characteristics and regularization of evolution of the Yangtze River Economic Belt space,and its influencing factors,so as to provide some scientific basis to optimize the Yangtze River Economic Belt spatial structure reorganization and cooperative development,and ultimately overall Yangtze River Economic Belt region,opening up and development.Conclusions:(1)the whole accessibility level of the Yangtze River Economic Belt has been significantly improved.The geographical differences to improve accessibility is obvious;the accessibility between urban has been further improved;the average urban area outside level of accessibility has improved significantly,accessibility improving overall relatively balanced and there are two nebulous parks in spatial distribution.(2)The urban scale structure of the Yangtze River Economic Belt gradually form a multi-core-periphery structure in space,and urban hierarchy shows the first type of primary distribution,and gradually form the three major cities system above the Yangtze River,the intermediate cam and Southwest;Yangtze River Economic Belt urban system Structure and its evolution has the characteristics of geographic differences,circle scalability,shaft directivity.(3)The development of the Yangtze Economic Zone structure of space has gone through five stages of development: the city-feed development,nuclear pole development,shaft development,network development and integration development,forming a ribbon core-periphery structure,but many factors led to the phenomenon of during a period,multiple stages of the development coexistence;the role of city market factors include geographic location,regional resource endowments,economic openness and globalization,regional development strategies and policy guidance,improvement of the regional transportation network.(4)The connection of the Yangtze River Economic Belt Regional Space is still in a state of weak within the urban inside the zone significantly enhanced,the urban inside between zone contact to be further strengthened;Spatial Information Network "core-periphery" structure develops as a cluster,and “two plate” gradually form within the Yangtze River economic zone;The drive mechanism of the evolution of the regional spatial contact network includes globalization,the elements of agglomeration and diffusion mechanisms,upgrading the industrial structure,innovation of transportation technological,urban group construction.The high values outside space contacted zone ??of Yangtze River Economic Belt long-term resident in the Yangtze River Delta region,outside space contacted two plates the north-south highlights;The top three outreach destination shows the features of a wide geographical differences,the high-level contact stable diamond-like pattern.(5)The Yangtze River Economic Belt district overall development and evolution of the spatial structure existences a significant differences between the Eastern an the Western district,and the regional integration process is slow;The development of the core urban development needs to be strengthened,the urban system need to be improved urgent;Administrative barriers need to be broken,and urban linkages should be improved and so on.In terms of optimizing regional spatial structure and under the “The Belt and Road Initiative” strategy background,specific relevant measures are put forward about the construction of the Yangtze RiverEconomic Belt full liberalization of the region: in terms of optimal reorganization of regional spatial structure perspective,specific measures are: adhere to both ecological and efficiency and stick to sustainable development;Innovate watershed management system,adhere to the coordinated development;foster local growth poles and construct a reasonable urban hierarchy;scientific plan transport networks and further optimize the spatial expansion channel;rationalize regional division of labor,and build multi-level development zone.In terms of the construction of the fully open system under “The Belt and Road Initiative” strategic,the Yangtze River Economic Belt should gradually strengthen outreach,to promote the full liberalization of the region,specific measures are: enhance the strength of the area of urban development,to create docking “The Belt and Road Initiative” core hub;improve the external transport network,and create docking “ The Belt and Road Initiative” extended channel;achieve agglomeration development and create docking “The Belt and Road Initiative” core area. |
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