Fine-Grained Spatiotemporal Analysis of the Impact of Restricting Factories, Motor Vehicles, and Fireworks on Air Pollution

doi:10.3390/ijerph17134828

	Fine-Grained Spatiotemporal Analysis of the Impact of Restricting Factories, Motor Vehicles, and Fireworks on Air Pollution
	Yang, Mei; Fan, Hong; Zhao, Kang
	2020-07
发表期刊	INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
EISSN	1660-4601
摘要	Aiming at improving the air quality and protecting public health, policies such as restricting factories, motor vehicles, and fireworks have been widely implemented. However, fine-grained spatiotemporal analysis of these policies' effectiveness is lacking. This paper collected the hourly meteorological and PM(2.5)data for three typical emission scenarios in Hubei, Beijing-Tianjin-Hebei (BTH), and Yangtze River Delta (YRD). Then, this study simulated the PM(2.5)concentration under the same meteorological conditions and different emission scenarios based on a reliable hourly spatiotemporal random forest model (R2exceeded 0.84). Finally, we investigated the fine-grained spatiotemporal impact of restricting factories, vehicles, and fireworks on PM(2.5)concentrations from the perspective of hours, days, regions, and land uses, excluding meteorological interference. On average, restricting factories and vehicles reduced the PM(2.5)concentration at 02:00, 08:00, 14:00, and 20:00 by 18.57, 16.22, 25.00, and 19.07 mu g/m3, respectively. Spatially, it had the highest and quickest impact on Hubei, with a 27.05 mu g/m3decrease of PM(2.5)concentration and 17 day lag to begin to show significant decline. This was followed by YRD, which experienced a 23.52 mu g/m3decrease on average and a 23 day lag. BTH was the least susceptible; the PM(2.5)concentration decreased by only 8.2 mu g/m3. In addition, influenced by intensive human activities, the cultivated, urban, and rural lands experienced a larger decrease in PM(2.5)concentration. These empirical results revealed that restricting factories, vehicles, and fireworks is effective in alleviating air pollution and the effect showed significant spatiotemporal heterogeneity. The policymakers should further investigate influential factors of hourly PM(2.5)concentrations, combining with local geographical and social environment, and implement more effective and targeted policies to improve local air quality, especially for BTH and the air quality at morning and night.
关键词	particulate matter public health air quality random forest COVID-19
DOI	10.3390/ijerph17134828
WOS关键词	PARTICULATE MATTER PM2.5 ; SOURCE APPORTIONMENT ; CONTROL POLICIES ; RIVER DELTA ; CHINA ; EMISSIONS ; MODEL ; CIRCULATIONS ; MITIGATION ; ELEMENTS
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health
出版者	MDPI
引用统计
文献类型	期刊论文
专题	新冠肺炎循证社会科学证据集成
作者单位	Wuhan Univ
推荐引用方式 GB/T 7714	Yang, Mei,Fan, Hong,Zhao, Kang. Fine-Grained Spatiotemporal Analysis of the Impact of Restricting Factories, Motor Vehicles, and Fireworks on Air Pollution[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,2020.
APA	Yang, Mei,Fan, Hong,&Zhao, Kang.(2020).Fine-Grained Spatiotemporal Analysis of the Impact of Restricting Factories, Motor Vehicles, and Fireworks on Air Pollution.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH.
MLA	Yang, Mei,et al."Fine-Grained Spatiotemporal Analysis of the Impact of Restricting Factories, Motor Vehicles, and Fireworks on Air Pollution".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH (2020).

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