DOI: 10.1029/2012GL054145
论文题名: Enhanced transfer of terrestrially derived carbon to the atmosphere in a flooding event
作者: Bianchi T.S. ; Garcia-Tigreros F. ; Yvon-Lewis S.A. ; Shields M. ; Mills H.J. ; Butman D. ; Osburn C. ; Raymond P. ; Shank G.C. ; DiMarco S.F. ; Walker N. ; Reese B.K. ; Mullins-Perry R. ; Quigg A. ; Aiken G.R. ; Grossman E.L.
刊名: Geophysical Research Letters
ISSN: 0094-9427
EISSN: 1944-9158
出版年: 2013
卷: 40, 期: 1 起始页码: 116
结束页码: 122
语种: 英语
Scopus关键词: Dissolved organic carbon
; Extreme precipitation events
; Global climate changes
; Higher frequencies
; Mississippi river
; Mississippi River Basin
; Northern Gulf of Mexico
; Societal concerns
; Carbon
; Carbon dioxide
; Climate change
; Precipitation (meteorology)
; Floods
; bacterium
; biosphere
; carbon cycle
; carbon dioxide
; climate change
; dissolved organic carbon
; flooding
; precipitation intensity
; twenty first century
; Atchafalaya River
; Atlantic Ocean
; Gulf of Mexico
; Louisiana
; Mississippi River
; United States
英文摘要: Rising CO2 concentration in the atmosphere, global climate change, and the sustainability of the Earth's biosphere are great societal concerns for the 21st century. Global climate change has, in part, resulted in a higher frequency of flooding events, which allow for greater exchange between soil/plant litter and aquatic carbon pools. Here we demonstrate that the summer 2011 flood in the Mississippi River basin, caused by extreme precipitation events, resulted in a "flushing" of terrestrially derived dissolved organic carbon (TDOC) to the northern Gulf of Mexico. Data from the lower Atchafalaya and Mississippi rivers showed that the DOC flux to the northern Gulf of Mexico during this flood was significantly higher than in previous years. We also show that consumption of radiocarbon-modern TDOC by bacteria in floodwaters in the lower Atchafalaya River and along the adjacent shelf contributed to northern Gulf shelf waters changing from a net sink to a net source of CO2 to the atmosphere in June and August 2011. This work shows that enhanced flooding, which may or may not be caused by climate change, can result in rapid losses of stored carbon in soils to the atmosphere via processes in aquatic ecosystems. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874926158&doi=10.1029%2f2012GL054145&partnerID=40&md5=32ff8768b72a1fa916b0408405b5bdd0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6691
Appears in Collections: 气候减缓与适应
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作者单位: Department of Oceanography, Texas A and M University, College Station, TX 77843-3146, United States
Recommended Citation:
Bianchi T.S.,Garcia-Tigreros F.,Yvon-Lewis S.A.,et al. Enhanced transfer of terrestrially derived carbon to the atmosphere in a flooding event[J]. Geophysical Research Letters,2013-01-01,40(1).