| Air quality is related to the healthy and happiness sense of the broad masses of people,and air pollution control is also related to the sustainable development of our country’s economy and society.Ordos City is one of the largest coal chemical bases in China.and the rapid development of heavy industry.At the same time,it has also caused a great impact on air quality.Air pollution has gradually become an important environmental problem that needs to be resolved.In order to coordinate the relationship between social and economic development of Ordos and people’s pursuit of a good quality of living environment,it is urgent to solve the problem of air pollution in the study area.Based on the daily data of environmental quality monitoring in Ordos from2014 to 2018,satellite remote sensing image data and meteorological observation data,this paper systematically studies and analyzes the status,characteristics and causes of atmospheric pollution in Ordos from two dimensions of time and space,discussed the comprehensive prevention and control measures of atmospheric pollution in Ordos.The results of the study are as follows:（1）From 2014 to 2018,the atmospheric environmental quality of Ordos showed an overall improvement;（2）O3 as the primary air pollutant has the highest proportion of time,reaching more than 50%,followed by PM10 and PM2.5.Therefore,it is still necessary to strengthen the environmental monitoring and pollution control of these types of air pollutants;（3）Different seasons have a relatively large impact on the atmospheric environmental quality of Ordos City,and the seasonal changes are more obvious.The pollutant concentration is the highest in winter,but the lowest in summer;（4）In the annual change trend of the six major pollutants,except for PM10,the concentration of each pollutant showed a downward or stable trend;（5）The spatial distribution of air quality in Ordos City It is better in the west and worse in the northeast;（6）The main causes of air pollution in Ordos include:coal-fired emissions during the heating period of up to half a year,motor vehicle operation and domestic pollution emissions,industrial park enterprise production and coal mine emissions The hilly mountains in the northeast of Ordos and the Yinshan mountains along the northern part of the Yellow Plain have an adverse effect on the atmospheric diffusion in these areas.According to the actual situation of Ordos City,the text provides guidance and operable implementation suggestions based on the causes of air pollution,which can provide a scientific basis for the study area to further modify and improve the air pollution control environment plan and specific implementation plans. |
