Significant concurrent decrease in PM2.5 and NO2 concentrations in China during COVID-19 epidemic
文献类型：期刊论文
| 作者 | Chu, Biwu; Zhang, Shuping ; Liu, Jun; Ma, Qingxin; He, Hong
|
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2021-01 |
| 卷号 | 99页码:346-353 |
| 关键词 | Covid-19 epidemic Air quality Temporal variation and spatial distribution Coordinated control PM2.5 O-3 |
| ISSN号 | 1001-0742 |
| 英文摘要 | The strict control measures and social lockdowns initiated to combat COVID-19 epidemic have had a notable impact on air pollutant concentrations. According to observation data obtained from the China National Environmental Monitoring Center, compared to levels in 2019, the average concentration of NO2 in early 2020 during COVID-19 epidemic has decreased by 53%, 50%, and 30% in Wuhan city, Hubei Province (Wuhan excluded), and China (Hubei excluded), respectively. Simultaneously, PM2.5 concentration has decreased by 35%, 29%, and 19% in Wuhan, Hubei (Wuhan excluded), and China (Hubei excluded), respectively. Less significant declines have also been found for SO2 and CO concentrations. We also ana-lyzed the temporal variation and spatial distribution of air pollutant concentrations in China during COVID-19 epidemic. The decreases in PM2.5 and NO2 concentrations showed relatively consistent temporal variation and spatial distribution. These results support control of NOx to further reduce PM2.5 pollution in China. The concurrent decrease in NOx and PM2.5 concentrations resulted in an increase of O-3 concentrations across China during COVID-19 epidemic, indicating that coordinated control of other pollutants is needed. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46071]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu, Biwu,Zhang, Shuping,Liu, Jun,et al. Significant concurrent decrease in PM2.5 and NO2 concentrations in China during COVID-19 epidemic[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,99:346-353. |
| APA | Chu, Biwu,Zhang, Shuping,Liu, Jun,Ma, Qingxin,&He, Hong.(2021).Significant concurrent decrease in PM2.5 and NO2 concentrations in China during COVID-19 epidemic.JOURNAL OF ENVIRONMENTAL SCIENCES,99,346-353. |
| MLA | Chu, Biwu,et al."Significant concurrent decrease in PM2.5 and NO2 concentrations in China during COVID-19 epidemic".JOURNAL OF ENVIRONMENTAL SCIENCES 99(2021):346-353. |
入库方式： OAI收割
来源：生态环境研究中心
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