气候变化领域集成服务门户(CCPortal): Carbon Deposition and Burial in Estuarine Sediments of the Contiguous United States

CCPortal

DOI	10.1029/2019GB006376
	Carbon Deposition and Burial in Estuarine Sediments of the Contiguous United States
	Hutchings J.A.; Bianchi T.S.; Najjar R.G.; Herrmann M.; Kemp W.M.; Hinson A.L.; Feagin R.A.
发表日期	2020
ISSN	0886-6236
EISSN	1944-9224
卷号	34 期号:2
英文摘要	Estuaries represent the primary linkage between the terrestrial and marine carbon cycles, and estuarine processing of riverine and coastal carbon plays a disproportionately large role in the global carbon cycle relative to the small areal extent of the estuarine environments. However, knowledge of the rate of organic carbon deposition and burial in estuarine sediments is lacking at regional scales. Data on surficial total organic carbon, linear sedimentation, and bulk density of estuarine sediments were compiled and categorized via a cluster analysis in order to estimate carbon deposition within the contiguous United States (CONUS). The cluster analysis broadly grouped estuaries by geography, but exceptions to geographic clustering highlighted differences within regions. A transfer function from deposition to burial based on linear sedimentation rate was used to estimate burial efficiency, and thus the rate of carbon burial within each cluster. We estimate organic carbon deposition rates within CONUS estuarine sediments to be 161 [121–217, 95% confidence] g C/m2/yr with a burial efficiency estimated at 38 [34–42, 95% confidence] %, which yields a long-term burial rate of 64 [44–97, 95% confidence] g C/m2/yr. Spatially integrated organic deposition and burial rates are 11.3 [8.5–15.2, 95% confidence] and 4.5 [3.1–6.8, 95% confidence] Tg C/yr, respectively. Our findings allow a more thorough understanding of coastal carbon cycling, which is critical for both management purposes as well as for the assessment of the role of estuaries in past and future climate change. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Burial; Carbon Cycle; Cluster Analysis; Empirical Model; Estuary; Flux
语种	英语
scopus关键词	bulk density; burial (geology); carbon cycle; cluster analysis; deposition; empirical analysis; estuarine sediment; flux measurement; organic carbon; sedimentation; sedimentation rate; transfer function; United States
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129666
作者单位	Department of Geological Sciences, University of Florida, Gainesville, FL, United States; Now at Department of Earth and Planetary Sciences, Washington University, St. Louis, MO, United States; Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University Park, PA, United States; Horn Point Laboratory, University of Maryland Center for Environmental Science, Cambridge, MD, United States; Department of Microbiology, University of Tennessee, Knoxville, TN, United States; Department of Ecosystem Science and Management, Texas A&M University, College Station, TX, United States
推荐引用方式 GB/T 7714	Hutchings J.A.,Bianchi T.S.,Najjar R.G.,et al. Carbon Deposition and Burial in Estuarine Sediments of the Contiguous United States[J],2020,34(2).
APA	Hutchings J.A..,Bianchi T.S..,Najjar R.G..,Herrmann M..,Kemp W.M..,...&Feagin R.A..(2020).Carbon Deposition and Burial in Estuarine Sediments of the Contiguous United States.Global Biogeochemical Cycles,34(2).
MLA	Hutchings J.A.,et al."Carbon Deposition and Burial in Estuarine Sediments of the Contiguous United States".Global Biogeochemical Cycles 34.2(2020).