| Transportation is the core power of China's economic development and regional spatial evolution.With the rapid development of transportation and economic society,expressway,high-speed railway,air transportation and other high-speed transportation forms a high-speed transportation network.The high-speed transportation network,with its high efficiency and convenience,has changed the traditional comparative state of location and transportation advantages,making some regions of our country gradually rise to the strategic area of national development,and further accelerating the evolution process of China's integrated economic spatial pattern.At the same time,with the continuous promotion of the transportation power strategy,the investment in transportation infrastructure is gradually increasing,and the impact on the evolution of regional spatial pattern will be increasingly in-depth.Based on this,this paper takes the impact of high-speed traffic network on the evolution of regional spatial pattern and the optimization path as the research object,and uses the methods of qualitative and quantitative,theoretical research and empirical analysis to analyze the mechanism of high-speed traffic and spatial evolution from two perspectives of transportation mode and regional spatial elements,and puts forward the optimization path and strategy.From the perspective of transportation mode,the paper analyzes the evolution of expressway,high-speed railway,air transportation and regional spatial structure respectively;from the perspective of regional space,it analyzes the impact mechanism of high-speed transportation network on regional traffic accessibility,regional economic development,industrial structure layout and regional spatial structure.On this basis,taking Beijing Tianjin Hebei Urban Agglomeration as an example,this paper constructs models such as accessibility measurement,multiple regression analysis,co integration test,Moran,Si index,etc.,analyzes the data related to high-speed traffic network and space by using Eviews software and draws conclusions,and finally putsforward optimization countermeasures.The main conclusions are as follows:(1)The influence of Expressways on the regional economic spatial pattern mainly includes three aspects: the urban nodes along the line,the narrow and long areas on both sides of the passageway and the regional surface composed of industrial clusters.The traffic and transportation conditions at the entrance and exit of expressway are convenient,and the economic polarization effect is obvious,which promotes the rapid growth of new urban system and node cities in this area.The high level of traffic facilities on both sides of the expressway has attracted some emerging industries and resource elements to gather on both sides of the channel to form a scale economy to a certain extent and produce a traffic corridor effect.(2)The role of high-speed railway on regional spatial structure is mainly reflected in three dimensions: high-speed railway station,city level and regional level.This paper analyzes the effect of the development of high-speed railway on the change of urban spatial location pattern,and concludes that the cities that were in the regional center before the operation of high-speed railway gradually changed into node cities after the operation of high-speed railway.In addition,the high-speed railway network system strengthens the connection between urban agglomerations and regional plates,and forms a 2-8-hour traffic circle centered on Beijing,which reduces the regional space-time distance and promotes the formation of national economic integration.The impact of air transport network on spatial structure is mainly reflected in three aspects: Airport Economic Zone,urban hierarchical structure and regional spatial change.(3)The space-time distance of the area covered by the high-speed traffic network is reduced,and the accessibility level is improved.Through the weighted average travel time between cities to measure the accessibility level of the city,and then use the index model to measure the regional high-speed traffic advantage,cluster analysis of the values obtained by the two,and then get the coordinated development degree of the high-speed traffic development in the Middle East and the western region and theaccessibility level of the region.China's high-speed transportation network and regional spatial accessibility are generally coordinated.The level of accessibility and coordination is from high to low in the eastern coastal area,the central area and the western area.(4)High speed transportation network promotes regional economic growth and regional industrial structure transformation and upgrading.The construction and improvement of high-speed transportation network promote the efficient flow of production factors in and between regions,and promote the rational layout and optimal allocation of factors in regional space.The regional industrial development is mainly distributed along the high-speed transportation network,and its regional spatial distribution pattern shows the characteristics of network development.Taking Beijing Tianjin Hebei Urban Agglomeration as an example,this paper analyzes the influence of passenger and freight volume of three high-speed transportation modes,including expressway,high-speed railway and air transportation,on the total economic volume and the tertiary industrial structure through multiple regression and Va R impulse response analysis model.The results show that high-speed transportation has a significant positive correlation with economic growth and industrial structure optimization.(5)The high-speed traffic plays an important role in the reconstruction of regional spatial structure.With the development of high-speed traffic network,the cities in the region are connected by high-speed traffic channels,and the regional central city is also transformed into node cities along the traffic line.The regional spatial form realizes the transformation from local space to mobile space.The spatial structure of regional economy has changed from single center to multi-core,and the effect of economic integration has been significantly enhanced.Taking Beijing Tianjin Hebei Urban Agglomeration as an example,the paper uses Moran's I index to evaluate the agglomeration and balanced development of regional economic spatial pattern.The results show that there are spatial distribution patterns of high-level andhigh-level areas,low-level and low-level areas in Beijing Tianjin Hebei Urban Agglomeration,which leads to the balance of spatial economic development pattern. |
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