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首页> 外文期刊>Building and Environment >Impact of the COVID-19 lockdown on roadside traffic-related air pollution in Shanghai, China
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Impact of the COVID-19 lockdown on roadside traffic-related air pollution in Shanghai, China

机译：Covid-19锁定对中国上海路边交通相关空气污染的影响

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摘要

The outbreak of COVID-19 has significantly inhibited global economic growth and impacted the environment. Some evidence suggests that lockdown strategies have significantly reduced traffic-related air pollution (TRAP) in regions across the world. However, the impact of COVID-19 on TRAP on roadside is still not clearly understood. In this study, we assessed the influence of the COVID-19 lockdown on the levels of traffic-related air pollutants in Shanghai. The pollution data from two types of monitoring stations-roadside stations and nonroadside stations were compared and evaluated. The results show that NO2, PM2.5, PM10, and SO2 had reduced by similar to 30-40% at each station during the COVID-19 pandemic in contrast to 2018-2019. CO showed a moderate decline of 28.8% at roadside stations and 16.4% at non-roadside stations. In contrast, O-3 concentrations increased by 30.2% at roadside stations and 5.7% at non-roadside stations. This result could be resulted from the declined NOx emissions from vehicles, which lowered O-3 titration. Full lockdown measures resulted in the highest reduction of primary pollutants by 34-48% in roadside stations and 18-50% in non-roadside stations. The increase in O-3 levels was also the most significant during full lockdown by 64% in roadside stations and 33% in non-roadside stations due to the largest decrease in NO2 precursors, which promote O-3 formation. Additionally, Spearman's rank correlation coefficients between NO2 and other pollutants significantly decreased, while the values between NO2 and O-3 increased at roadside stations.
机译：Covid-19的爆发显着抑制了全球经济增长并影响了环境。有些证据表明，锁定策略在世界各地的地区大大降低了与众不同的空气污染（陷阱）。然而，仍然没有清楚地理解Covid-19对路边陷阱的影响。在这项研究中，我们评估了Covid-19锁定对上海交通相关空气污染物水平的影响。比较和评估来自两种类型的监测站 - 路边站和非载体站的污染数据。结果表明，NO2，PM2.5，PM10和SO2在Covid-19大流行期间与2018-2019相比，在每个站的情况下减少到30-40％。 CO在路边站点表现出28.8％，在非路边站的16.4％下降。相比之下，在路边站的O-3浓度增加了30.2％，在非路边站处增加了5.7％。这一结果可能是由于车辆的下降NOx排放量降低了O-3滴定。整个锁定措施导致初级污染物的最高减少34-48％，在路边站中，非路边站18-50％。 O-3水平的增加也是在路边站完全锁定64％的最显着，由于NO 2前体的降低，非路边站的33％，这促进了O-3形成。此外，NO2和其他污染物之间的Spearman的秩相关系数显着降低，而NO2和O-3之间的值在路边站增加。

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  • 来源
    《Building and Environment》 |2021年第5期|107718.1-107718.10|共10页
  • 作者

    Wu Cui-lin; Wang Hong-wei; Cai Wan-jin; He Hong-di; Ni An-ning; Peng Zhong-ren;

  • 作者单位

    Shanghai Jiao Tong Univ Ctr Intelligent Transportat Syst & Unmanned Aeria Sch Naval Architecture Ocean & Civil Engn State Key Lab Ocean Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Ctr Intelligent Transportat Syst & Unmanned Aeria Sch Naval Architecture Ocean & Civil Engn State Key Lab Ocean Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Ctr Intelligent Transportat Syst & Unmanned Aeria Sch Naval Architecture Ocean & Civil Engn State Key Lab Ocean Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Ctr Intelligent Transportat Syst & Unmanned Aeria Sch Naval Architecture Ocean & Civil Engn State Key Lab Ocean Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Ctr Intelligent Transportat Syst & Unmanned Aeria Sch Naval Architecture Ocean & Civil Engn State Key Lab Ocean Engn Shanghai 200240 Peoples R China;

    Univ Florida Coll Design Construct & Planning Int Ctr Adaptat Planning & Design POB 115706 Gainesville FL 32611 USA;

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  • 正文语种 eng
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  • 关键词

    COVID-19; Traffic-related air pollution (TRAP); Lockdown; Roadside;

    机译：Covid-19;交通相关的空气污染（陷阱）;锁定;路边;

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