| The wholesale market is an important part of China’s national economy and an important space carrier in the function of urban commercial circulation.After the reform and opening up,with the continuous deepening of urbanization,the influence of modern logistics and e-commerce,the spatial layout of China’s wholesale market has also changed to a certain extent.In the past,the academic research on the wholesale market mainly focused on the economic management and the relationship with urbanization.There has been some research on the laws and mechanisms of spatial evolution.As an important commercial city in the north,and has a unique dual-city structure,its wholesale market development has entered a stage of recession and transformation.It is of theoretical and practical significance to systematically study the evolution characteristics and mechanism of the spatial layout of its wholesale market.This article focuses on the wholesale market of more than one hundred million US dollars in Tianjin’s central cities from 2000 to 2018.It is divided into two periods of2000-2008 and 2008-2018.At the macro level,the overall wholesale market is different from the micro level.The market size evolution,benefit changes,and spatial and temporal distribution of the type wholesale market are analyzed in depth,and the characteristics of its spatial layout evolution are summarized.The spatial layout is analyzed and summarized from five aspects: market factors,economic factors,transportation factors,planning factors,and emerging factors.In the process of evolution characteristics research,full use of spatial analysis and calculation methods such as location quotient,circle analysis method,nuclear density analysis method,center of gravity method and OLS model method,qualitative and quantitative systematic analysis including urban and rural planning,geography and economics Content of various disciplines.Through a combination of qualitative and quantitative spatial analysis and mathematical statistics,the study found that the overall spatial layout of the wholesale market in Tianjin city center has a "single-core" to "dual-core" evolution,the spatial distribution center of gravity has evolved to the southeast,and the overall spatial layout has shown obvious The structure of the circle layer,the evolution of the diffusion to the suburbs and the new coastal area,and the rapid shrinkage of the space began to shrink.The wholesale market of different commodity attributes and scales has different characteristics in the spatial layout evolution;the spatial layout evolution characteristics of the wholesale market in the central city of Tianjin are affected by consumer demand,agglomeration effects,market commodity attributes,market radiation capabilities,land prices,and transportation conditions,Urban spatial structure,planning policies,modern logistics,and e-commerce,and other influencing factors.At the same time,at different stages,the intensities of different influencing factors are also different.Finally,on the basis of summarizing the above research and conclusions,the development laws and development trends of the spatial layout evolution of Tianjin’s wholesale market are summarized,and related suggestions are proposed for the spatial layout of the future wholesale market. |
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