Study On Regional Differences And Convergence Of Modernization Level Of China’s Industrial Chain And Supply Chain

In recent years,the global industrial chain and supply chain have been affected by uncertainties such as anti-globalization,new technological changes,unilateralism,trade protectionism and rising geopolitical risks,and faced restructuring.Combined with the impact of the COVID-19 pandemic,the global industrial chain and supply chain have evolved into localization,diversification and regionalization.In this context,the country has put forward a major strategic measure of "upgrading the modernization level of the industrial chain and supply chain".Therefore,it is of great theoretical and practical significance to study the measurement method of the modernization level of industrial chain supply chain,scientifically measure the modernization level of industrial chain supply chain of various provinces in our country and analyze their regional differences and dynamic evolution trend for balancing the development difference of the modernization level of industrial chain supply chain among regions and speeding up the construction of modern industrial system.Through literature review,this paper firstly defines the connotation of the modernization of industrial chain and supply chain,and then establishes a comprehensive evaluation index system according to its connotation.The entropy weight TOPSIS method was used to empirically measure the modernization level of industrial chain and supply chain in30 provinces of China during 2011-2020.The Dagum Gini coefficient was used to decompose the differences in the modernization level of China’s industrial chain and supply chain,and the overall differences,intra-regional differences,inter-regional differences and contribution rates of the modernization level of China’s industrial chain and supply chain were analyzed.Then the kernel density estimation was used to analyze the dynamic evolution characteristics of the modernization level of China’s industrial chain and supply chain.Finally,the convergence of the modernization level of China’s regional industrial chain and supply chain is studied using the σ convergence model and the β convergence model.The purpose is to improve the modernization level of Chinese industrial chain supply chain and accelerate the construction of modern industrial system.The results show that:(1)there are inter-provincial and regional differences in the modernization level of China’s industrial chain and supply chain,which presents a stepped spatial distribution feature of "high in the east and low in the east and west".In addition,from the perspective of each dimension,the innovation ability level,green intensity level,digital level and economic benefit level of the industrial chain and supply chain show the spatial distribution characteristics of "high in the east and low in the East and west".The controllable level of industrial chain and supply chain presents a stepped spatial distribution feature of "high in the West and low in the east".(2)The Dagum Gini coefficient decomposition results show that during 2011-2020,the modernization level differences of China’s regional industrial chain and supply chain mainly come from inter-regional differences,and the inter-regional differences mainly come from east-central and East-west regional differences,and the East-central and East-west regional differences are decreasing.Regional differences between central and western regions are widening.(3)Kernel density estimation results show that there are differences in the location,shape,ductility and other dynamic characteristics of distribution curves in the country and the three regions,and the absolute differences in the modernization level of the national industrial chain and supply chain show an expanding trend.In the three regions,the absolute difference of the industrial chain and supply chain modernization level in the eastern region did not change much,while the absolute difference of the industrial chain and supply chain modernization level in the central region and the western region showed an expanding trend.(4)From the national and regional convergence test,it can be seen that the modernization level of the industrial chain and supply chain in the country and various regions has no obvious σ convergence in space.There are significant absolute βconvergence and conditional β convergence in the country and various regions,but the convergence rate of the two is different,and the convergence rate of absolute β convergence presents a "middle-east-west" pattern.The convergence rate of condition β shows an East-middle-west pattern.Finally,according to the research results,the paper puts forward the countermeasures and suggestions on upgrading the modernization level of the industrial chain and supply chain.