摘要
为探究废气排放对空气污染的影响,采用时间序列分析法与Pearson相关性分析法,对东营市疫情期间污染物浓度从空间、时间角度分析。结果表明东营疫情期间NO_(2)、SO_(2)、PM10、PM2.5、CO浓度呈现南部污染>中部污染>北部污染,内陆大于沿海区域的趋势,O3则表现为北部>南部。疫情期间除O3浓度上升外其余5项污染物浓度均明显下降。在小时尺度下,PM2.5、PM10、CO呈倒"S"型变化,时间在上午9点污染严重,16点污染最轻。NO_(2)与O3呈负相关性,相关系数为-0.913。SO_(2)疫情前后呈"双峰单谷",疫情中呈"双谷单峰"变化。表明减少废气排放可有效减缓各污染物浓度,研究成果为政府治理环境提供依据。
In order to explore the impact of exhaust emissions on air pollution,this paper adopts time series analysis and Pearson correlation analysis to analyze the pollutant concentrations during the epidemic in Dongying city from the perspective of space and time.The results showed that during the epidemic period in dongying,the concentration of NO2,SO2,PM10,PM2.5and CO showed a trend of southern pollution>central pollution>northern pollution and pollution in inland area is greater than that in coastal areas,while O3 showed a trend of northern pollution>southern pollution.During the epidemic period,except O3 concentration increased,the concentration of the other five pollutants decreased significantly.At the hourly scale,PM2.5,PM10and CO change showed an inverted"S"shape,with severe pollution at 9 am and lightest pollution at 16 PM.There was a negative correlation between NO2 and O3,with a correlation coefficient of-0.913.SO2 showed a"double peak and single peak"before and after the epidemic,and a"double valley and single peak"change during the epidemic.It indicates that reducing exhaust emissions can effectively reduce the concentration of various pollutants,and the research results provide a basis for the government to manage the environment.
作者
崔志浩
李成名
戴昭鑫
刘承旭
CUI Zhi-hao;LI Cheng-ming;DAI Zhao-xin;LIU Cheng-xu(College of Geodesy&Geomatics,Shandong University of Science&Technology,Qingdao,Shandong 266000,China;Chinese Academy of Surveying&Mapping,Beijing 100000,China)
出处
《四川环境》
2021年第5期54-60,共7页
Sichuan Environment
基金
国家重点研发计划(2018YFB2100700)
中国测绘科学研究院基本科研业务费(AR2010)。
关键词
新冠疫情
空气质量污染物浓度
时空特征分析
化工企业废气排放
东营市
Covid-19
air quality pollutant concentration
analysis of temporal and spatial characteristics
chemical enterprise exhaust emissions
Dongying City