An Analysis Of The Industrial Spatial Pattern And Driving Factors Of The Yangtze River Delta Urban Agglomeration

The industrial structure is an important criterion for evaluating the degree of development of the country and the city.Due to differences in innovation capabilities and technology absorption capacity,the regions have different development speeds and different industrial structures.At the same time,the society is in the process of continuous development.The continuous adjustment of the industrial structure plays an important role in the development of social productive forces,the status of the country and the average living standards of the people.As a typical representative of regional development,the Yangtze River Delta region covers cities of different development types and scales.The quality of regional economic development is high,and it is worthy of further study to provide reference for regional development.Based on the existing industrial research,this paper uses the 2008~2017 Yangtze Delta industry data to conduct the following research:(1)Analysis of industrial agglomeration.Using Gini coefficient to analyze the industrial agglomeration from the industrial level,the results are summarized and found that the industries with high concentration in the Yangtze River Delta are mainly consumer service industry,productive service industry,mining industry,manufacturing industry and construction industry;Using the location entropy and nuclear density estimation to explore the advantageous areas facing the industry from the space-time layer,and display them in the form of maps;(2)Analysis of industrial driving force.On the basis of reading the literature,a set of indicator systems covering urban infrastructure,population,education,openness,industrial structure and policies is formed.From a global perspective,the geo-detector is used to analyze the indicators affecting the industrial agglomeration of the Yangtze River Delta.Compared with the regression model,this method is comprehensive in explaining the coverage of indicators even in the presence of collinearity;According to the interaction between the two factors,the influence of the two factors on the industrial development,and make up for the gap in the interaction of industrial indicators.Through experiments,it is found that the indicators of different stages have different forces on the Yangtze River Delta agglomeration industry,and the interaction of various indicators can explain the state of industrial development.From a local perspective,geographically weighted regression(GWR)is used to explore spatial non-stationarity.Due to the inaccurate parameter estimation of GWR in the presence of outliers,the paper proposes geographically weighted regression model based on IGGIII weight function(IGGIII-GWR)to solve this problem.The simulation results show that the IGGIII-GWR performance is increased by 1.1079,0.2320,0.0266,respectively,in terms of the evaluation indexes MSE,MAE,and R~2.This model is used to further build the regression relationship between the agglomeration industry and indicators.The results show that for the producer service industry city scale,education level,and financial normalization play a positive role.The impact of urban scale on the southeastern cities is greater than that of the northwestern cities;the education level has a greater impact on the central region,and the impact on the north and south regions is relatively small;the impact of financial policies on the central region is greater than on the eastern and western regions;The degree of nationalization is inversely related to the degree of development of the productive service industry,it has a greater impact on the southeastern region and the northwest region,and has less impact on the central region.For the consumer service industry,there are obvious regional differences in the impact of infrastructure construction and nationalization on the consumer service industry.For the manufacturing industry,both the degree of nationalization and the ability to innovate can positively promote the development of the manufacturing industry.The degree of nationalization has a greater impact on the western region of the Yangtze River Delta,and has less impact on the eastern region;the city’s ability to innovate has a greater impact on the central region of the Yangtze River Delta,with relatively little impact on the eastern and western regions.