Spillover And Feedback Effects Of Carbon Emissions Between Chinese Cities

In order to adapt to the new development pattern of expanding domestic demand and deepening supply-side structural reform,the impacts of regional trade on urban carbon emissions are determined from the perspectives of demand and supply,so as to provide a complete practical basis for formulating scientific and effective emission reduction policies to achieve the goal of carbon peak as soon as possible.Based on the Leontief input-output model and Ghosh input-output model of the three regions,this paper estimates the spillover and feedback effects of carbon emissions in the four major municipalities and key industries of each municipality during 2012-2017 from the perspective of demand and supply,and makes a comparison from the two perspectives: At the regional level,the spillover and feedback multiplier effect of carbon emissions in all municipalities showed a decreasing trend during the study period,which was mainly related to the decreasing trend of direct carbon emission intensity in each municipality.However,the actual effect of carbon emission spillover and feedback increases and decreases,which is mainly related to the changing trend of final demand/total initial input.In addition,from the perspective of demand,The actual carbon emissions spillover from Beijing to Tianjin are the largest.From the perspective of supply,The actual carbon emission from Beijing to Chongqing is the largest.From the perspective of industry,compared with the perspective of demand,the key industries from the perspective of supply tend to be inclined to the upstream of the industrial chain.For example,the spillover effect of carbon emission from the perspective of supply is large,but it is small from the perspective of demand.The construction industry is the opposite.Therefore,we should not only pay attention to whether the direct carbon emission intensity decreases,but also pay attention to whether the reduction of direct carbon emission intensity inhibits the total carbon emission,which is greater than the pulling effect of the increase of final demand/total initial input on the total carbon emission.In addition,the coordinated emission reduction strategy between cities should be analyzed from two perspectives.In addition,it is necessary to comprehensively analyze the relationship between key industries from the perspective of demand and supply from the perspective of the whole industrial chain,and formulate scientific and effective carbon emission reduction policies.