Ambient Air Quality Evaluation And Factor Analysis In Zhanyi District Of Qujing City,Yunnan Province

With the rapid development of urbanization in China,the problem of increasingly serious air pollution has become the focus of the whole society.The problem of air environmental pollution is also increasingly prominent in the continuous development of Zhanyi District,Qujing City.Therefore,it is significant for improving the air quality of Qujing city to evaluate and diagnose the environmental air quality,to find out the influence factors of air quality and further predict and evaluate the air quality,finally propose effective measures to improve the ambient air quality.This study identified the trends of the six main indicators of air pollution and identified the main influencing factors.This study expounded the reasons for the changes in the ambient air quality in the region,identified the problems in the control of ambient air pollution in the region,and proposed corresponding countermeasures for the treatment and improvement of ambient air pollution.?1?This study clarified the characteristics of ambient air pollution in Zhanyi area:the ambient air quality in Zhanyi area is between excellent and good,and the air quality is good.The main pollutants are ozone,.PM₁₀0 and PM_2.5.SO₂,NO₂ and CO showed a trend of high in winter and low in summer;O₃ appeared a W-type trend with higher concentrations in spring;PM₁₀0 and PM_2.5.5 were within the national secondary indicator concentrations,and they all demonstrated a trend of high in spring and low in autumn.?2?This study identified the main influencing factors of ambient air pollution in the Zhanyi area:The air quality influencing factors in this area are mainly classified into three categories which account for 66.9%of the overall air quality contribution,including meteorological condition control factors,pollutant control factors,and automobile exhaust control factors.Meteorological conditions are the main cause of environmental air pollution in the area,and the secondary cause is pollutants emitted by various pollution sources.In addition,vehicle exhaust emissions may cause CO,NO₂,PM₁₀,and PM_2.5pollution in the study area.Finally,to remind relevant departments to pay attention to the occurrence of photochemical smog pollution,according to the characteristics of ambient air pollution in the area:to reduce the release of pollutants such as CO,NO₂,PM₁₀0 and PM_2.5,by managing and controlling of vehicle exhaust emissions,heavily polluting enterprises,construction dust,etc.;industrial restructuring and regional joint prevention to reduce PM₁₀0 and PM_2.5concentrations;The government implements law enforcement,improves environmental regulations,and develops Internet+and air pollution control models to jointly control and control haze,It is also important to accelerate the improvement of urban forms and reduce the sources of smog pollution.