| Since China's accession to the World Trade Organization,foreign trade,as one of the three carriages driving China's economic growth,has resulted in sustained and high-speed growth of the domestic economy and a significant improvement in per capita income and living standards.However,in the process of participating in international trade division of labor,China is in a low value-added area of industrial value chain.Foreign trade activities are concentrated in extensive processing and manufacturing industries,which accelerates the growth of carbon emissions in greenhouse gases and makes China the most carbon-emitting country in the world.At the same time,China obtains technology spillovers from advanced countries through import trade.Practice shows that the environmental technology effect of foreign trade plays a positive role in promoting the inhibition of carbon emissions,and the ability of importing countries to absorb technology spillovers depends on factors such as human capital accumulation and domestic R&D investment.Due to the above background,this paper chooses carbon emissions as an indicator of environmental quality,takes the mechanism of Technology Spillovers from imported trade in China as the research object,and uses panel data from 30 provinces in China from 2000 to2016 to analyze the impact of foreign trade on carbon emissions from the perspective of technology spillovers.Firstly,considering the difference of technology absorptive capacity among regions in China,30 provinces are further divided into 8 regions.The technology spillover size obtained from different regions is measured by LP model.The results show that there is a phenomenon of technology catching up and convergence within regions.There are great differences in technology spillovers among regions.The Technology Spillovers of Beijing-Tianjin and the eastern and southern coastal areas are different.Ability is always in the leading position.Secondly,using the classical framework of foreign trade environment effect analysis,we choose imported technology spillover as explanatory variable from the perspective of technology effect,human capital and R&D investment as instrumental variable,and select the key factors representing scale and structure effect as variables.Finally,the spatial dependence and agglomeration of inter-provincial carbon emissions are tested by spatial Durbin model,and the comprehensive effects are further divided into direct effects and indirect effects by spatial partial differential method.The research found that: the ability of technology spillover will decrease with the increase of distance,and the per capita carbon emission level of beneficiary provinces will increase in the process of technology gradient transfer;human capital and domestic R&D level not only ensure the basic conditions of domestic technological innovation,but also create a good atmosphere for absorbing foreignadvanced technology;openness,Urbanization rate,per capita GDP and other variables.There is a significant positive correlation between per capita carbon emissions and provinces;the indirect effects of Technology Spillovers from import trade are constantly strengthened and expanded due to the cycling and accumulation of spatial transmission mechanism,which outweighs the direct effects.Through theoretical analysis and empirical test results,this paper draws accurate conclusions about the impact of China's external technology spillovers on carbon emissions,and combines regional differences in technology spillovers and spatial dependence of inter-provincial carbon emissions,puts forward regional targeted trade policy recommendations: promoting human capital growth in the western region,consolidating the inhibition of Technology Spillovers on carbon emissions;and relying on carbon emissions.Spatial correlation is needed to achieve regional coordinated green development,and international carbon emission mechanism is used to strengthen the introduction of low-carbon technology. |
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