Spatial Characteristics And Industry Differences Of Domestic Value Chain Division Of Labo

After more than 40 years of reform and opening up,China has actively participated in the construction of global value chains and has achieved rapid economic development.It has become an indispensable and important force in promoting economic globalization.However,on the one hand,the current global value chain system is still dominated by multinational companies from developed countries,and China’s low-end lock-in dilemma still exists.In addition,the rise of the international trade protection system has exacerbated the uncertainty of China’s economic development,forcing China to build a The value chain system with domestic circulation as the main body;on the other hand,the technical level and industrial development model brought about by the extension of foreign vertical division of labor in China make the regional development unbalanced more and more obvious.The value chain division of labor based on the characteristics of industry-related development is: The construction of my country’s domestic value chain system provides new development ideas and realizes the narrowing of regional economic gaps.Therefore,building a domestic value chain system for regional industrial association and development is of great significance to the realization of high-end upgrading and coordinated development of my country’s economy.This paper measures the domestic value chain from the two perspectives of value chain participation and division of labor,and quantitatively analyzes the evolution characteristics and division of labor differences in China’s eight regional value chains from two aspects: region and industry.The empirical part takes into account the differences in regional industry development and changes,and constructs a continuous-time inter-regional input-output table.At the same time,in the research on the degree of participation in the value chain,considering the influence of the internal development of the regional economy,the domestic value chain is decomposed into the intra-regional value chain and the national value chain,that is,the degree of dependence of the economic development within the region and the degree of inter-regional dependence are compared..In addition,in order to reflect the comprehensiveness of the characteristics of the division of labor in the domestic value chain of different regional industries,the research analyzes the position of its division of labor with the upstream index.Finally,based on the measurement of the degree of participation in the value chain and the position of the division of labor,through the comparative study of the ability to obtain added value and the span of the division of labor in each region,the domestic value chain participation of regional industries is comprehensively analyzed.The results of this paper show that: each region is mainly based on the participation of the intra-regional value chain,the intra-regional and specialized division of labor in China is more dependent on intra-regional resources,and the degree of industrial correlation between regions is not high enough and the connection is insufficient.On the whole,inland areas with higher upstream and downstream degrees have a weaker ability to obtain added value,while coastal areas are stronger.In terms of the added value obtained by China’s manufacturing industry in the domestic value chain,labor-intensive and capital-intensive manufacturing industries have obtained more than technology-intensive manufacturing industries.In terms of value chain participation,from a regional comparison,the overall participation of inland regions in the domestic value chain is higher than that of coastal regions;on the contrary,from an industry perspective,coastal regions have a higher degree of participation in the domestic value chain in terms of manufacturing,and domestic The land area is relatively low,showing a gradually decreasing distribution trend of “East,Middle and West”,and the manufacturing industry in economically developed areas gains more added value in the value chain.In terms of time evolution,there is no obvious regularity in the changes in the participation of different industries in the manufacturing value chain,but the eight regions still maintain a state of higher dependence on regional demand.In terms of the position of the value chain,the overall upstream degree of the eight regions has been improved,the industrial chain of each region has been extended,and the division of labor within the industrial sector has been refined to a certain extent.The regional location distribution characteristics are significant,with higher upstream index in inland areas and lower in coastal areas.The capital-intensive manufacturing industry has the highest upstream degree index among the eight regional manufacturing industries,while the technology-intensive manufacturing industry has the lowest.The domestic value chain participation of manufacturing in coastal areas,especially the eastern and southern coastal areas,shows the characteristics of "low upstream,high participation",while the inland areas are the opposite.The degree of participation in the eight regional value chains is not directly related to the location,and there is a mismatch between the level of division of labor and the level of vertical division of labor in some regions.