| 2007-2017 is a transitional period for China’s economic development,shifting from pursuing rapid GDP growth to a win-win state of economic development and environmental improvement,China’s economic development has entered a "new normal phase",shifting from pursuing quantity to quality.Industry is the most important part of China’s industrial structure,high-quality industrial development is an inevitable requirement to adapt to the transition from rapid economic growth to high-quality development.However,China’s industry is highly dependent on energy consumption and has the characteristics of high energy consumption and high emissions,the emissions of major industrial polluting gases such as sulfur dioxide(SO2),nitrogen oxides(NOx),particulate matter(PM)account for more than 25%of the world’s total.At present,the major pollutant emission in China’s industrial sector all implement ultra-low emission standards,and have complete pollutant treatment facilities,the importance of economic restructuring to the reduction of pollutants has become more prominent.The effect of energy-saving and emission-reduction measures for the construction of new facilities and installation of new equipment on the emission of air pollutants is no longer obvious,and the importance of economic restructuring to emission reduction of pollutants has become more prominent.This paper selects three major air pollutants in China’s industrial sector from 2007 to 2017 as the research objects,and constructs a decoupling model based on the sectoral added value of comparable input-output tables.From the perspectives of total industrial emissions and sub-sectoral emissions,exploring the decoupling state and changing trends of pollutant emissions and economic growth in China’s industrial sectors.The study found that the economic development and total SO2 emissions of China’s industrial sector experienced a process of strong decoupling-weak decoupling-strong decoupling from 2007 to 2017;NOx emissions experienced a process of weak decoupling-strong decoupling-weak decoupling-expanding connection-expanding negative decoupling-strong decoupling,strong decoupling has been seen after 2011.PM emissions experienced a process of strong decoupling-weak decoupling-strong decoupling-weak decoupling-expansion negative decoupling-strong decoupling-expansion negative decoupling-strong decoupling process,it continues to fluctuate.affecting by changes in the growth rate of emissions.Combining the decoupling status of three pollutant emission sectors,the strong decoupling sector accounted for 45.5%from 2007 to 2010,29.5%from 2010 to 2012,52.3%from 2012 to 2015,and 47.7%from 2015 to 2017,and the decoupling index has increased significantly.The comparison found that the overall period from 2012 to 2017 was better than 2007 to 2012,and light industry and petroleum,coking products,and nuclear fuel processing are the sectors with the most and least ideal decoupling effects among the 11 industrial sectorsA structural decomposition analysis model based on input-output is used to analyze the changes in air pollutant emissions in China’s industrial sector,to investigate the main factors affecting industrial pollutant emissions.The study found that emission intensity and economic scale have the greatest impact on pollutant emissions.The economic scale contribution rate of SO2 emissions changed from 131.8%to 54.1%,while that of pollution emission intensity increased from-82.3%to-189.2%;the economic scale contribution rate of NOx emissions decreased from 95.4%to 33.9%.while that of pollution emission intensity dropped from-84.9%to-75.5%;the contribution rate of PM emission pollution emission intensity dropped from-142.3%to-79.0%,while that of economic scale dropped from 139.7%to 34.4%,it is the most significant decrease.Compared with 2007-2012,the suppression effect of emission intensity has been greatly improved,and the promotion effect of economic scale changes has also been greatly reduced in 2012-2017.The change of production technology is the main factor affecting the difference of the decoupling state between light industry and petroleum,coking products and nuclear fuel processing industry.This research deeply understands the characteristics of changes in economic and environmental relations and environmental quality before and after the new normal phase,understanding the mechanism of economic growth,environmental quality and the development of industrial sectors,and exploring the impact of different economic growth rates on industrial development and pollution emissions,in order to grasp the factors affecting the industrial structure and pollutant emissions of China’s industrial sector from a macro perspective,it can provide a reference for formulating relevant industrial structure adjustments and energy conservation and emission reduction policies. |
PDF Full Text Request