气候变化领域集成服务门户(CCPortal): Microplastics in a Remote Lake Basin of the Tibetan Plateau: Impacts of Atmospheric Transport and Glacial Melting

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DOI	10.1021/acs.est.1c03227
	Microplastics in a Remote Lake Basin of the Tibetan Plateau: Impacts of Atmospheric Transport and Glacial Melting
	Dong, Huike; Wang, Lanxiang; Wang, Xiaoping; Xu, Li; Chen, Mengke; Gong, Ping; Wang, Chuanfei
通讯作者	Wang, XP (通讯作者)
发表日期	2021
ISSN	0013-936X
EISSN	1520-5851
起始页码	12951
结束页码	12960
卷号	55 期号:19
英文摘要	Plastic pollution is fast becoming one of the most pressing global issues that we currently face. Remote areas, such as the polar regions and the Tibetan Plateau, are now also exposed to microplastic contamination. However, with the impact of global warming, the transport of microplastics within the glacier-lake basins in such regions remains unclear. In this work, the Nam Co Basin in the Tibetan Plateau was selected to study the characteristics of microplastics in the rain fallout, lake water, glacial runoff, and non-glacial runoff. Fiber and films were the most common microplastic morphologies in all water samples; a higher proportion (37%) of light-weighing polypropylene and small-size (50-300 mu m, similar to 30%) microplastics were found in the glacial runoff. Air mass trajectory analysis showed that microplastics could be transported through the atmosphere over a distance of up to 800 km. For microplastic loading in lakes, the atmospheric fallout was estimated to be 3.3 tons during the monsoon season, whereas the contributions of glacial runoff (similar to 41 kg) and non-glacial runoff (similar to 522 kg) were relatively low. For the microplastic loading in glaciers, the atmospheric deposition was similar to 500 kg/yr, and the output caused by glacial melting only accounted 8% of the total atmospheric input. All these results suggested that the dominant pathway through which microplastics enter remote mountainous lake basins is atmospheric deposition, and once deposited on glaciers, microplastics will be stored for a long time. This work provides quantitative evidence elucidating the fate of microplastics in alpine lake environments.
关键词	ORGANIC CONTAMINANT RELEASE SURFACE WATERS POLLUTION CHINA ABUNDANCE AREA DEPOSITION SEDIMENTS DEBRIS RANGE
英文关键词	fate; glacial runoff; lake; loading; storage
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000705995700024
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260326
推荐引用方式 GB/T 7714	Dong, Huike,Wang, Lanxiang,Wang, Xiaoping,et al. Microplastics in a Remote Lake Basin of the Tibetan Plateau: Impacts of Atmospheric Transport and Glacial Melting[J]. 中国科学院青藏高原研究所,2021,55(19).
APA	Dong, Huike.,Wang, Lanxiang.,Wang, Xiaoping.,Xu, Li.,Chen, Mengke.,...&Wang, Chuanfei.(2021).Microplastics in a Remote Lake Basin of the Tibetan Plateau: Impacts of Atmospheric Transport and Glacial Melting.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(19).
MLA	Dong, Huike,et al."Microplastics in a Remote Lake Basin of the Tibetan Plateau: Impacts of Atmospheric Transport and Glacial Melting".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.19(2021).