globalchange  > 气候变化与战略
DOI: 10.1029/2018GB005897
论文题名:
The Role of the Upper Tidal Estuary in Wetland Blue Carbon Storage and Flux
作者: Krauss K.W.; Noe G.B.; Duberstein J.A.; Conner W.H.; Stagg C.L.; Cormier N.; Jones M.C.; Bernhardt C.E.; Graeme Lockaby B.; From A.S.; Doyle T.W.; Day R.H.; Ensign S.H.; Pierfelice K.N.; Hupp C.R.; Chow A.T.; Whitbeck J.L.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2018
卷: 32, 期:5
语种: 英语
英文关键词: biogeochemical cycle ; biomineralization ; carbon sink ; decomposition ; litter ; mass balance ; salinity ; saltmarsh ; soil carbon ; swamp forest ; tide ; wetland ; Atlantic Coast [North America] ; Atlantic Coast [United States] ; United States ; Waccamaw River
学科: Carbon budget ; Marsh ; Swamp forest ; Tide ; Wetland
中文摘要: Carbon (C) standing stocks, C mass balance, and soil C burial in tidal freshwater forested wetlands (TFFW) and TFFW transitioning to low-salinity marshes along the upper estuary are not typically included in “blue carbon” accounting, but may represent a significant C sink. Results from two salinity transects along the tidal Waccamaw and Savannah rivers of the U.S. Atlantic Coast show that total C standing stocks were 322–1,264 Mg C/ha among all sites, generally shifting to greater soil storage as salinity increased. Carbon mass balance inputs (litterfall, woody growth, herbaceous growth, root growth, and surface accumulation) minus C outputs (surface litter and root decomposition, gaseous C) over a period of up to 11 years were 340–900 g C · m−2 · year−1. Soil C burial was variable (7–337 g C · m−2 · year−1), and lateral C export was estimated as C mass balance minus soil C burial as 267–849 g C · m−2 · year−1. This represents a large amount of C export to support aquatic biogeochemical transformations. Despite reduced C persistence within emergent vegetation, decomposition of organic matter, and higher lateral C export, total C storage increased as forests converted to marsh with salinization. These tidal river wetlands exhibited high N mineralization in salinity-stressed forested sites and considerable P mineralization in low-salinity marshes. Large C standing stocks and rates of C sequestration suggest that TFFW and oligohaline marshes are considerably important globally to coastal C dynamics and in facilitating energy transformations in areas of the world in which they occur. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160230
Appears in Collections:气候变化与战略

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作者单位: Wetland and Aquatic Research Center, U.S. Geological Survey, Lafayette, LA, United States; Hydrological-Ecological Interactions Branch, U.S. Geological Survey, Reston, VA, United States; Baruch Institute of Coastal Ecology and Forest Science, Clemson University, Georgetown, SC, United States; Department of Environmental Sciences, Macquarie University, Sydney, NSW, Australia; Eastern Geology and Paleoclimate Science Center, U.S. Geological Survey, Reston, VA, United States; School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL, United States; Aquatic Analysis and Consulting, Morehead City, NC, United States; Jean Lafitte National Historical Park and Preserve, National Park Service, New Orleans, LA, United States

Recommended Citation:
Krauss K.W.,Noe G.B.,Duberstein J.A.,et al. The Role of the Upper Tidal Estuary in Wetland Blue Carbon Storage and Flux[J]. Global Biogeochemical Cycles,2018-01-01,32(5)
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