Convergence Of Environmental Pollution In The Yangtze River Economic Belt And The Analysis Of Influencing Factors

Since the introduction of the Yangtze River Economic Belt in China,the economy of the Yangtze River Economic Belt has made considerable progress.However,along with the development of the Yangtze River Economic Belt,the rapid growth of pollution emissions.The environmental carrying capacity of the Yangtze River is close to the upper limit.Pollution discharge damages the health of residents and is not conducive to sustainable economic development.Unbalanced development has made the pollution discharge of cities along the line diversified,affecting the temporal and spatial pattern of pollution in the Yangtze River Economic Belt.Convergence of pollution emissions is an important mechanism to achieve coordinated economic and environmental development.Therefore,studying the convergence of pollution emissions in the Yangtze River Economic Belt and its influencing factors are of great significance for the Yangtze River economy to take the green development path.Based on the economic growth convergence model,this paper collects the panel data of per capita industrial “three wastes” emissions from 108 cities in the Yangtze River Economic Belt in China from 2005 to 2017,and uses the dynamic panel system GMM estimation method to better solve the endogenous problems of dynamic panels.The empirical analysis analyzes the convergence,absolute and conditional convergence of per capita pollution in the Yangtze River Economic Belt.By designing a panel data model with interaction terms,the effects of economic growth,industrial structure,technological progress and economic openness on convergence speed were examined.There are the following findings.(1)The per capita pollution of cities in the Yangtze River Economic Belt is convergent.The per capita industrial sulfur dioxide and per capita industrial wastewater discharges have a convergence trend.The per capita industrial sulfur dioxide and per capita industrial wastewater emissions are both quantified,and the per capita emissions gap between cities is reduced.There is a time dynamic of per capita industrial soot emissions: there is no convergence trend before 2014,and there is a clear convergence trend after 2014.(2)There is absolute convergence of per capita industrial wastewater and per capita industrial soot emissions,and it does not change with time.There is obvious time dynamics of per capita industrial sulfur dioxide emissions: there is no absolute convergence in 2013~2017,but existed before 2013.Absolute convergence.(3)The per capita industrial “three wastes” pollution emissions in the Yangtze River Economic Belt have conditions converging.Compared with 2005-2013,the per capita pollution emissions of 2013-2017 have a greater convergence rate,and the evidence of the strategic intention of the Yangtze River Economic Belt is obvious..In terms of per capita industrial sulfur dioxide emissions and per capita industrial wastewater discharge,as the scale of the industry expands,per capita pollution emissions increase.Compared with 2005-2013,the economic opening up in2013-2017 will inhibit per capita pollution emissions to a greater extent;for per capita industrial sulfur dioxide emissions,the estimated coefficient of economic growth is significantly positive in 2005-2013,instead in 2013~ In 2017,it was significantly negative,showing an inverted “U” relationship;for per capita industrial soot emissions,the coefficient of technological progress was only significantly negative in2013-2017,indicating that the development of technology in recent years has inhibited industrial soot emissions.As a function,the industrial structure promotedper capita pollution emissions in 2005-2013 and 2013-2017;the economic opening only significantly suppressed the per capita pollution emissions of industrial soot in2013-2017.Therefore,compared with 2005-2013,the role of economic growth,technological progress and economic opening in the significant suppression of per capita pollution emissions in 2013-2017 indicates that technological progress and economic opening after 2013 have reduced the economy while developing Per capita pollution emissions.(4)Economic growth,industrial structure,technological progress and economic openness not only have an impact on the growth rate of per capita pollution emissions,but also affect the speed of convergence.Economic growth in 2005-2013 made the convergence speed of per capita industrial soot emissions smaller.In 2013-2017,the convergence rate of per capita industrial soot emissions increased,and the impact on per capita pollution emission convergence was mainly through “convergence of growth rate”;The industrial structure makes the per capita pollution emission convergence rate faster in 2013~2017,and the convergence speed is promoted through “regional convergence”;the technological progress in 2005-2013 makes the convergence rate of per capita industrial sulfur dioxide and wastewater per capita pollution emission become smaller.From 2013 to 2017,the convergence rate of per capita industrial sulfur dioxide pollution emissions has increased,mainly through“regional convergence” and “growth speed convergence”;economic opening in2013-2017 has made the convergence rate of per capita industrial “three wastes”pollution emissions From 2005 to 2013,it was mainly through the “convergence of growth rate”.