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

CCPortal

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.
英文关键词	microplastic; polymer; plastic; rain; anthropogenic source; climate conditions; long range transport; plastic; protected area; resuspension; spatiotemporal analysis; urban area; wet deposition; Article; atmospheric deposition; biodiversity; dry deposition; dust; life history; national park; particle size; plastic pollution; pollution transport; priority journal; United States; wet deposition; wilderness; wind speed; environmental protection; pollution; soil pollutant; water pollutant; wind; United States; Conservation of Natural Resources; Environmental Pollution; Plastics; Rain; Soil Pollutants; United States; Water Pollutants, Chemical; Wind
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243132
作者单位	Department of Watershed Sciences, Utah State University, Logan, UT 84322, United States; Geosciences Department, Salt Lake Community College, Salt Lake City, UT 84123, United States; Materials and Structural Analysis Division, Thermo Fisher Scientific, San Jose, CA 95134, United States
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],2020,368(6496).
APA	Brahney J.,Hallerud M.,Heim E.,Hahnenberger M.,&Sukumaran S..(2020).Plastic rain in protected areas of the United States.Science,368(6496).
MLA	Brahney J.,et al."Plastic rain in protected areas of the United States".Science 368.6496(2020).