气候变化领域集成服务门户(CCPortal): Plastic rain in protected areas of the United States

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DOI	10.1126/science.aaz5819
	Plastic rain in protected areas of the United States
	Brahney J.; Hallerud M.; Heim E.; Hahnenberger M.; Sukumaran S.
发表日期	2020
ISSN	0036-8075
起始页码	1257
结束页码	1260
卷号	368 期号:6496
英文摘要	Eleven billion metric tons of plastic are projected to accumulate in the environment by 2025. Because plastics are persistent, they fragment into pieces that are susceptible to wind entrainment. Using high-resolution spatial and temporal data, we tested whether plastics deposited in wet versus dry conditions have distinct atmospheric life histories. Further, we report on the rates and sources of deposition to remote U.S. conservation areas. We show that urban centers and resuspension from soils or water are principal sources for wet-deposited plastics. By contrast, plastics deposited under dry conditions were smaller in size, and the rates of deposition were related to indices that suggest longer-range or global transport. Deposition rates averaged 132 plastics per square meter per day, which amounts to >1000 metric tons of plastic deposition to western U.S. protected lands annually. © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.
关键词	plastic rain environmental protection pollution soil pollutant United States water pollutant wind Conservation of Natural Resources Environmental Pollution Plastics Rain Soil Pollutants United States Water Pollutants, Chemical Wind
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133426
推荐引用方式 GB/T 7714	Brahney J.,Hallerud M.,Heim E.,et al. Plastic rain in protected areas of the United States[J]. Science,2020,368(6496).
APA	Brahney J.,Hallerud M.,Heim E.,Hahnenberger M.,&Sukumaran S..(2020).Plastic rain in protected areas of the United States.,368(6496).
MLA	Brahney J.,et al."Plastic rain in protected areas of the United States".368.6496(2020).