Research On Regional Economic Spatial Interaction And Diffusion Model Under Traffic Network Constraints

With the advancement of regional economic integration,the interrelationship and the degree of interaction among regions have been deepened,and the regional economy gathers to the center,at the same time,it presents the diffusion trend gradually.In order to find out the law of regional economic development and promote the rapid development of economy,spatial agglomeration,diffusion and interaction theory become the research hotspot.Regional economic spatial agglomeration research has been relatively mature,however,the gravitational model commonly used in the study of spatial interaction effects of regional economies lacks practical significance.Although some scholars have taken into account the impact of the transport network on the regional economic development,the reconstructed model still has some shortcomings such as stability and versatility.Space diffusion theory research carried out too late,and there is still a problem that the model parameters are difficult to calculate.Therefore,it is necessary to make further optimization.With regard to the problems that the spatial interaction and diffusion model lack practical significance,the factors that reflect the actual development of the traffic network and the natural geographical environment are introduced into the spatial interaction model,and the way to build model parameters are improved,which can improve the stability and versatility of the model.Take the traffic distance as the distance factor to give the spatial diffusion model the practical meaning,and adopt the new parameter calculation method to reduce the difficulty of the operation.The paper takes Yunnan Province as the research sample area,the spatial clustering of the regional economy is quantitatively analyzed by using the spatial autocorrelation model.By comparing the results of the regional economic gravitational model before and after the improvement,the advantages of improving the regional economic gravitational model are verified.Finally,the spatial diffusion effect of regional economy is analyzed synthetically from the angles of intensity,scope and mode.The results show that:compared with the traditional model,the constraints of the traffic network can make the model analysis more consistent with the objective reality.The paper provides a theoretical basis for exploring the law of regional economic development and has a certain degree of guiding significance for regional planning.