Analysis On The Characteristics And Influencing Factors Of Logistics Space Structure

Logistics space structure is the objective condition and basis for logistics planning and policy formulation.Based on the two perspectives of logistics space network and logistics space agglomeration effect,this thesis attempts to explore the characteristics of logistics space structure and the action mechanism of its influencing factors by taking Zhejiang Province as an example,aiming to provide a theoretical basis and practical basis for the healthy development of local logistics.Based on the super network theory,this thesis constructs a logistics super network model in Zhejiang Province to analyze its topological structure characteristics;Use the improved location quotient method and the establishment of a logistics connection strength model to measure the level of logistics industry agglomeration;introduce logistics POI data,use kernel density estimation,spatial autocorrelation and other methods to analyze the level of logistics spatial agglomeration and compare with the traditional location quotient method;Relevant indicators of spatial agglomeration level,build a comprehensive evaluation system for the importance of logistics network nodes based on Random Forest,Adaptive boosting,and Gradient Boosting models,identify key nodes in the logistics network,and analyze the invulnerability of the network against deliberate attacks and random attacks;consider The influence of spatiotemporal elements on the characteristics of logistics spatial structure,an improved spatial lag model based on a semi-parametric panel was constructed to explore the influencing factors of logistics spatial structure and their mechanism,and BP neural network was used to test the robustness of the model.The main research conclusions of this thesis are as follows:(1)The overall connectivity performance of the logistics network in Zhejiang Province is good,and individual nodes carry more logistics tasks;logistics hot spots are mostly distributed in the eastern coastal areas and the northern areas near the Yangtze River Delta urban agglomeration;(2)The importance of nodes in the network is related to the The topological structure characteristics and the level of spatial agglomeration are obviously positively correlated;(3)the phenomenon of logistics spatial agglomeration presents spatial autocorrelation characteristics;the urban development level and reasonable industrial structure are positively promoting the spatial agglomeration effect of logistics,and the construction of perfect logistics infrastructure and excessive The government’s behavior makes logistics activities tend to be randomly distributed in space.