COVID-19疫情防控对秦皇岛市大气污染物减排效应

The Effect of COVID-19 Epidemic Prevention and Control on the Emission Reduction of Air Pollutants in Qinhuangdao City

以秦皇岛市为例,研究人为源控制对大气污染物减排效应,结果表明:2020年上半年秦皇岛市疫情防控措施实现了对大气污染物的减排作用;温度、湿度、风速、日照时数四个气象因素与秦皇岛市大气污染物浓度相关性较小,1月中旬前后的减排效果主要是由于区域传输和疫情防控的共同作用,2月中旬到3月中旬的减排效果突出,表明了疫情防控措施对大气污染物浓度的减排效应;秦皇岛市疫情防控措施对大气污染物的减排率较高。

Taking Qinhuangdao as an example, this paper studies the emission reduction effect of anthropogenic source control on air pollutants. The results show that:(1) in the first half of 2020, the epidemic prevention and control measures in Qinhuangdao City have realized the emission reduction of air pollutants;(2) the four meteorological factors of temperature, humidity, wind speed and sunshine hours have little correlation with the concentration of air pollutants in Qinhuangdao city, the emission reduction effect around mid-January is mainly due to the joint action of regional transmission and epidemic prevention and control, and the emission reduction effect from mid-February to mid March highlights the emission reduction effect of epidemic prevention and control measures on the concentration of air pollutants;(3) the reduction rate of air pollutants from epidemic prevention and control measures in Qinhuangdao is relatively high.