气候变化领域集成服务门户(CCPortal): Glacier Loss Impacts Riverine Organic Carbon Transport to the Ocean

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DOI	10.1029/2020GL089804
	Glacier Loss Impacts Riverine Organic Carbon Transport to the Ocean
	Hood E.; Fellman J.B.; Spencer R.G.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	Lateral transport of organic carbon (OC) to the coastal ocean is an important component of the global carbon cycle because rivers transport, mineralize, and bury significant amounts of OC. Glaciers drive water and sediment export from many high-elevation and high-latitude ecosystems, yet their role in watershed OC balances is poorly understood, particularly with regard to particulate OC. Here, we evaluate seasonal water, sediment, and comprehensive OC budgets, including both dissolved and particulate forms, for three watersheds in southeast Alaska that vary in glacier coverage. We show that glacier loss will shift the dominant size fraction of riverine OC from particulate toward dissolved and potentially alter the provenance of particulate OC. Glacier coverage also controls whether OC export is source (C stock) or transport (runoff) limited at the watershed scale. These findings provide insight into the future trajectory of riverine OC export in glacierized regions. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Budget control; Watersheds; Carbon transport; Global carbon cycle; High elevation; High Latitudes; Lateral transport; Sediment exports; Size fraction; Watershed scale; Organic carbon; carbon cycle; coastal zone; estuarine front; organic carbon; sediment transport; sediment-water interface; watershed; Alaska; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169645
作者单位	Environmental Science Program and Alaska Coastal Rainforest Center, University of Alaska Southeast, Juneau, AK, United States; Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, United States
推荐引用方式 GB/T 7714	Hood E.,Fellman J.B.,Spencer R.G.M.. Glacier Loss Impacts Riverine Organic Carbon Transport to the Ocean[J],2020,47(19).
APA	Hood E.,Fellman J.B.,&Spencer R.G.M..(2020).Glacier Loss Impacts Riverine Organic Carbon Transport to the Ocean.Geophysical Research Letters,47(19).
MLA	Hood E.,et al."Glacier Loss Impacts Riverine Organic Carbon Transport to the Ocean".Geophysical Research Letters 47.19(2020).