气候变化领域集成服务门户(CCPortal): Source identification of airborne bacteria in the mountainous area and the urban areas

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DOI	10.1016/j.atmosres.2019.104676
	Source identification of airborne bacteria in the mountainous area and the urban areas
	Mu F.; Li Y.; Lu R.; Qi Y.; Xie W.; Bai W.
发表日期	2020
ISSN	0169-8095
卷号	231
英文摘要	Airborne microbes are an abundant component of the atmospheric aerosol, which has important influences on atmospheric conditions and public health. However, their possible sources have not been well-studied. To identify the sources of airborne bacteria, airborne PM2.5, PM10 samples and microorganism samples from surface-soil and leaves were collected at three different sampling sites involved in the mountainous area and urban areas in Xi'an, China in summer and autumn. The samples were then analyzed by fluorescence staining and high-throughput sequencing to explore the relationship in bacterial community structures between ambient air samples and possible sources. Results show that the concentrations of airborne microbes differed among sites and between seasons. The airborne bacterial community structures also varied with seasons and sites, with seasonal differences being greater than spatial ones. In both seasons, leaf-surface represented the main local source of airborne bacteria. At the mountainous area, bacteria from surface-soil and leaf-surface contributed the most to the airborne microbial community; at both mountainous and urban areas, this contribution was more pronounced in autumn. Furthermore, back trajectories arriving at the three sampling sites showed that the airborne bacteria may come from other regions by long-distance airflow. The results of this study provide a better understanding about the sources of ambient bacteria. © 2019 Elsevier B.V.
英文关键词	Airborne bacteria; Back trajectories; Mountainous and urban areas; Source tracker; Sources
学科领域	Atmospheric aerosols; Elementary particle sources; Urban growth; Airborne bacteria; Atmospheric conditions; Back trajectories; Bacterial community structure; High-throughput sequencing; Source identification; Source tracker; Urban areas; Bacteria; aerosol; bacterium; community structure; microbial community; mountain region; particulate matter; source identification; urban area; Bacteria (microorganisms)
语种	英语
scopus关键词	Atmospheric aerosols; Elementary particle sources; Urban growth; Airborne bacteria; Atmospheric conditions; Back trajectories; Bacterial community structure; High-throughput sequencing; Source identification; Source tracker; Urban areas; Bacteria; aerosol; bacterium; community structure; microbial community; mountain region; particulate matter; source identification; urban area; Bacteria (microorganisms)
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120616
作者单位	School of Environmental Science and Engineering, Chang'an University, Xi'an, 710054, China; Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong University of Technology, Guangzhou, 510006, China; Key Laboratory of Subsurface Hydrology and Ecology in Arid Areas, Ministry of Education, Xi'an, 710054, China
推荐引用方式 GB/T 7714	Mu F.,Li Y.,Lu R.,et al. Source identification of airborne bacteria in the mountainous area and the urban areas[J],2020,231.
APA	Mu F.,Li Y.,Lu R.,Qi Y.,Xie W.,&Bai W..(2020).Source identification of airborne bacteria in the mountainous area and the urban areas.Atmospheric Research,231.
MLA	Mu F.,et al."Source identification of airborne bacteria in the mountainous area and the urban areas".Atmospheric Research 231(2020).