DOI: 10.1002/2013GL058691
论文题名: Forest ecosystem changes from annual methane source to sink depending on late summer water balance
作者: Shoemaker J.K. ; Keenan T.F. ; Hollinger D.Y. ; Richardson A.D.
刊名: Geophysical Research Letters
ISSN: 0094-10463
EISSN: 1944-10194
出版年: 2014
卷: 41, 期: 2 起始页码: 673
结束页码: 679
语种: 英语
英文关键词: carbon
; climate
; forests
; methane
; models
Scopus关键词: Carbon
; Climate models
; Forestry
; Methane
; Models
; Soil moisture
; climate
; Evergreen forests
; Forest productivity
; forests
; Global carbon cycle
; Gross primary productivity
; Interannual variability
; Summer precipitation
; Ecosystems
; annual variation
; carbon flux
; forest ecosystem
; hydrological cycle
; methane
; precipitation (climatology)
; primary production
; water budget
; Carbon
; Ecosystems
; Forestry
; Methane
; Models
; Maine
; United States
英文摘要: Forests dominate the global carbon cycle, but their role in methane (CH4) biogeochemistry remains uncertain. We analyzed whole-ecosystem CH4 fluxes from 2 years, obtained over a lowland evergreen forest in Maine, USA. Gross primary productivity provided the strongest correlation with the CH4 flux in both years, with an additional significant effect of soil moisture in the second, drier year. This forest was a neutral to net source of CH4 in 2011 and a small net sink in 2012. Interannual variability in the summer hydrologic cycle apparently shifts the ecosystem from being a net source to a sink for CH4. The small magnitude of the CH4 fluxes and observed control or CH4 fluxes by forest productivity and summer precipitation provide novel insight into the CH4 cycle in this globally important forest ecosystem. ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892881293&doi=10.1002%2f2013GL058691&partnerID=40&md5=0715ede6a2292b484c99fac51d2214de
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7727
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, United States
Recommended Citation:
Shoemaker J.K.,Keenan T.F.,Hollinger D.Y.,et al. Forest ecosystem changes from annual methane source to sink depending on late summer water balance[J]. Geophysical Research Letters,2014-01-01,41(2).