Spatiotemporal Distribution, Trans Regional Transmission and Causes of Air Pollution

Abstract

The survey region are important node cities in the North-South transmission channel of air pollution. Based on the long-term monitoring data of PM2.5 and PM10 in the survey region, we analyzed the temporal and spatial distribution, trans regional transmission and causes of air pollution. We found that the PM2.5 concentration and PM10 concentration of the survey region were different in different space and similar in time trend from 2015 to 2019. The air pollution in winter was the most serious. The air pollution in summer was the lowest. The
transfer direction of PM2.5 was relatively single and that of PM10 was more complex. PM2.5 transfer was mainly affected by the concentration difference of air pollutants in different cities. PM2.5 transfer was mainly from high concentration areas to significantly low concentration areas. PM10 transfer was mainly affected by regional topography and climate characteristics. The analysis of the causes of local air pollutants showed that the primary industry, the secondary industry and the tertiary industry all contributed PM2.5. PM10 mainly
came from the primary industry and the tertiary industry. Local governments not only need to control air pollution from the source but also need to coordinate across provinces. This paper used Econometrics and statistics models to analyze the cross regional transfer and provided a new reference method.