Research On The Impact Of National Value Chain Participation On Environmental Pollution

Since joining the WTO,China has actively participated in the division of labour in the global value chain,and has gradually formed a development model dominated by external circulation.However,China’s labour-intensive and resource-intensive industries are at the lower end of the international value chain,bringing about a series of problems such as excessive consumption of resources and increasingly serious environmental pollution.Faced with the environmental pollution problems caused by the low-end embedding mode in the global value chain,China has proposed to build a "new development pattern with the domestic grand cycle as the main body and the domestic and international double cycles promoting each other",making full use of the advantages of a large country and the capital,technology and management experience accumulated over the years to build and develop the national value chain.Clarifying the relationship between provincial participation in national value chains and environmental pollution will help build a more complete national value chain division of labour system,expand domestic demand,promote advanced industrial structure,and achieve the dual goals of economic development and environmental improvement.This paper uses data provided by China Emission on Accounts and Datasets to measure the forward participation in national value chains,the backward participation in national value chains and the participation in national value chains of 42 sectors in30 provinces in 2012,2015 and 2017 using the value added decomposition method(KWW method).participation,and analyze the spatial and temporal change characteristics of national value chain participation.Based on the theoretical analysis,a fixed-effects model was used to empirically test the impact of each province’s participation in the division of labour in national value chains on environmental pollution,and feasible policy recommendations were put forward based on the analysis results.The main findings of this paper are as follows:1.There is a wide gap in the degree of participation in the division of labour in national value chains among different provinces,and the participation in national value chains is lower in the eastern provinces compared to the central and western regions.The main reasons for provinces’ higher degree of participation in national value chain division of labour are: firstly,provinces located in the northwest inland have weaker economic ties with other international regions,and internal circulation has become their important choice direction;secondly,influenced by resource endowment and industrial structure,less developed provinces with abundant resources participate in national value chain division of labour by providing primary processed products to other provinces,and contribute more to the supply of goods to other provinces The extent of their contribution to the supply of goods from other provinces is greater.2.China’s pollution emission levels are still high,but emissions of major industrial pollutants have all been reduced to varying degrees.The environmental pollution situation varies significantly from place to place,but the changes in industrial pollutant emissions remain consistent with the overall national trend.3.National value chain participation affects the level of environmental pollution through three paths: scale effect,structural effect and technology effect.The results show that: firstly,provinces’ participation in national value chain division of labour helps reduce the level of regional ecological pollution;secondly,in both eastern and western regions,provinces’ participation in national value chain division of labour can significantly reduce the level of regional pollution emissions,while provinces in central regions’ participation in national value chain division of labour has a less obvious effect on improving environmental quality.4.Encourage technological innovation,optimise industrial layout,deepen inter-regional collaboration and division of labour,promote the heightened industrial structure of each region,improve the participation of national value chains,and further bring into play the positive effects of national value chain participation on the ecological environment.