A Study On The Impact Of Economic Growth On Primary Particulate Matter Emissions

Since winter starts in 2012,the smog weather appeared in central and eastern China from time to time,afterwards the incidence and pollution level of smog showed explosive growth.On January 4,2014,China National Commission for Disaster Reduction and the Ministry of Civil Affairs firstly publicised the smog weather endangered human health as 2013 natural disaster.Research on PM_2.5 has gradually become a hot spot with the deep influence of smog disaster.Despite the complexity of source and composition of PM_2.5,we can can come to the conclusion that:PM_2.5 is mainly composed of primary particulate matter directly formed by physical discharge and secondary particulate matter formed by exhaust gases containing SO₂ and NO_X after a series of complex chemical reaction,and studies have shown that smoke(powder)dust discharge is the main source of primary particulate matter,which accounts for 30%-60%of the total PM_2.5 of city.Therefore,this article will describe the particle emission and economic growth panel data of different provinces from 2004 to 2015 to a certain extent based on the theoretical study of environmental kuznets curve.The regression of panel data is divided into the central,eastern,western and northeastern regions respectively.Investigate emission stage of the primary particulate matter in different region of China,and speculate on its development trend based on the extended EKC model.Through the description of present situation,overall development of China's economy is at a high speed and stable state.After 2012,the economic speed increase has slowed down,and it is expected that this trend will remain for a while.From the perspective of various region development,the eastern region is still the development for the whole China,and status of which will not be shaken for a long period;the central and western regions benefited from national development strategy and the promotion of various policies are at a stage of rapid development,and its economy has shown a rising trend;the economic development in the northeastern region has been at a standstill compared with other regions.How to revitalize the past glory of the old industrial zone may become the next question of Chinese economic development.For environment pointer,the total emission of particulate matter has decreased,but it is repeated.Although the environmental regulation in the eastern region has some effects,but the overall situation leaves much to be desired,the environmental regulation effect in the central and western regions is promising.The heavy-pollution and heavy-discharge extensive development strategy in past has gradually transformed and not affected the rapid development of economy.The environmental regulation in the northeastern region is as bad as its economic development.It is issue considered emphatically for China in the next stage how to develop this region in the future.Combined with data on economic development and environmental,it can be seen that environmental indicators was first increased and than decreased along with the steady growth of the economy,which was repeated in the process.After that,this paper perform correct by building the EKC model and adding multiple control variables,uses STATA 12.0 software to check the stability of the data with LLC,and then judges the model form by F test and Hausman test after regression of panel data,fits the EKC curves of primary particulate emissions for whole country and four regions,conclusions are as follows:Overall,the EKC curves of other three regions are positive N-type and enter the second rising stage except that northeast region is linear decreasing.Therefore,the trend is not optimistic according to above results.From regression results of different sources for primary particulate matter,it can be seen that the EKC curve of industrial sources for eastern region is positive N-type,while the curve of life source is inverted U-shape.Since now,the emission of primary particulate matter for industrial sources is on the rise,while life source is on the downgrade stage.Since the emissions of industrial sources are much larger than the life source,it can be concluded that the main influence of industrial sources in the east leads that the EKC curve are positive N-type and on the second rising stage;The overall EKC curve for central region is positive N-type,the EKC curve of industrial source is positive N-type,while the curve of life source is linearly increasing,which means that the central region is the only area that industrial and domestic sources of particulate matter emissions are on the rise.The western region is different from other regions to a great extent.The overall EKC curve is positive N-type,the EKC curve of industrial source presents linear decrease,and the curve of life source is positive U-shaped,and has already passed the inflection point into the rising stage,which means that the EKC curve of western region is entering the second rising stage in 2019 mainly due to the influence of life source,at the same time,the factor is existed in which the decline of industrial sources is not obvious.The northeastern region is the only region where the situation looks better.The overall EKC curve of it presents linear decrease,the curve of life source is inverted N-type,and enters the second decline phase.As we all know,the self-purification ability of the environment often has a threshold value.If self-purification ability of the environment exceeds the threshold,it will cause permanent and irreversible damage to the environment.Fortunately the eastern,central and the western regions are still in the early stages of the rising phase,so we still have time and space to make adjusting measures,such as adjusting development strategies,accelerating technology research and development,further increasing investment in environmental protection and controlling pollution transformation in trade,to avoid serious consequences.Hope that conclusions in this paper shall attract sufficient attention from relevant state departments to make them prepare early for possible situations in the future,timely adjust overall development strategy and policy in China,and strive to promote harmonious development of China's environment and economy.