Study On Air Pollution In Sichuan Province Based On Spatial Durbin Mode

In recent years,the economy of China has develop rapidly.At the same time,the rapid economic development is accompanied by the increasing air pollution which has caused more serious pollution to our country and has posed a threat to human health.The core concept of Chinese development is to solve the potential contradiction between environmental pollution and economic degradation.Our country is devoted to maintain environment-friendly economic growth on the basis of protecting the ecological environment.How to balance the relationship between air pollution and economic development has attracted extensive attention of scholars.The Kuznets curve theory was put forward in the 1990s.It says hat although the increase of per capita national income of a country will lead to the deterioration of environmental pollution,economic development is conducive to better improvement of the environment and economic growth is a prerequisite for environmental improvement in the long run.According to the current research conclusions on air pollution,first of all,most of the literature focuses on the causes and treatment of domestic air pollution which explored the optimization route of air pollution.Secondly,relevant research conclusions on the environmental Kuznets curve which divide the domestic region into different places or different economic development zones focuses on the differences of the environmental Kuznets curve in the economic development of different regions in China.In addition,in the study of single region’s air quality and economic development,most scholars use time series data,few scholars use more sufficient urban panel data.Finally,people commonly choose simple research indicators for the air pollution situation,such as PM2.5 pollution level,sulfur dioxide concentration,nitrogen dioxide concentration and so on.This article mainly focuses on the air pollution situation in Sichuan Province and draws the Kuznets curve of different air pollution indicators.First of all,The spatial Dubin model of air pollution was constructed and the environmental Kuznets curve was drawn with data in twenty one prefecture-level cities in Sichuan province from 2015 to 2020.Secondly,on the basis of research findings which select PM_2.5concentration,sulfur dioxide concentration and nitrogen dioxide concentration as air pollution indicators,this paper considers the ozone concentration,carbon monoxide concentration and other air pollution indicators.In addition,the influence of meteorological factors on air pollution is considered.Meteorological factors such as temperature,humidity,dew point temperature and atmospheric pressure are introduced into the model as control variables.In the specific exploration of the air pollution situation,first of all,a descriptive analysis which contains air pollution situation,economic situation,air pollution and meteorological factors has been carried out.The spatial Dubin model of air pollution was determined by Moran test,spatial effect diagnosis,Hausmann test and likelihood ratio test.According to different air pollution indicators such as PM_2.5concentration,sulfur dioxide concentration,nitrogen dioxide concentration,ozone concentration and carbon monoxide concentration,the spatial Dubin model was constructed,and the Kuznets curve was drawn.The conclusions of the study show that:Local meteorological variables impact on air pollution.Meteorological variables affect the air pollution status of surrounding cities.The air pollution status of surrounding cities affects local air pollution conditions.PM_2.5has a positive correlation between nitrogen dioxide and economic development.