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Rising methane emissions in response to climate change in Northern Eurasia during the 21st century
Zhu, Xudong1; Zhuang, Qianlai1,2; Chen, Min1; Sirin, Andrey3; Melillo, Jerry4; Kicklighter, David4; Sokolov, Andrei5; Song, Lulu6
2011-10-01
Source PublicationENVIRONMENTAL RESEARCH LETTERS
Volume6Issue:4
AbstractWe used a biogeochemistry model, the Terrestrial Ecosystem Model (TEM), to examine the methane (CH(4)) exchanges between terrestrial ecosystems and the atmosphere in Northern Eurasia from 1971 to 2100. Multiple model simulations using various wetland extent datasets and climate change scenarios were conducted to assess the uncertainty of CH(4) fluxes, including emissions and consumption. On the basis of these simulations we estimate the current net emissions in the region to be 20-24 Tg CH(4) yr(-1) (1 Tg = 10(12) g), two-thirds of which are emitted during the summer. In response to climate change over the 21st century, the annual CH(4) emissions in the region are projected to increase at a rate of 0.06 Tg CH(4) yr(-1), which is an order of magnitude greater than that of annual CH(4) consumption. Further, the annual net CH(4) emissions are projected to increase by 6-51% under various wetland extent datasets and climate scenarios by the end of the 21st century, relative to present conditions. Spatial patterns of net CH(4) emissions were determined by wetland extent. Net CH(4) emissions were dominated by wetlands within boreal forests, grasslands and wet tundra areas in the region. Correlation analyses indicated that water table depth and soil temperature were the two most important environmental controls on both CH(4) emissions and consumption in the region. Our uncertainty analyses indicated that the uncertainty in wetland extent had a larger effect on future CH(4) emissions than the uncertainty in future climate. This study suggests that better characterization of the spatial distribution and the natural diversity of wetlands should be a research priority for quantifying CH(4) fluxes in this region.
SubtypeArticle
KeywordMethane Wetlands Terrestrial Ecosystem Model Northern Eurasia
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS KeywordNATURAL WETLANDS ; WESTERN SIBERIA ; CH4 OXIDATION ; WATER-TABLE ; TUNDRA ; MODEL ; SOILS ; FLUX ; TEMPERATURE ; SENSITIVITY
Indexed BySCI
Language英语
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000298674700049
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68040
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhu, Xudong
Affiliation1.Purdue Univ, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA
2.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA
3.Russian Acad Sci, Inst Forest Sci, Lab Peatland Forestry & Ameliorat, Uspenskoye, Moscow Oblast, Russia
4.Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA
5.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA
6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Xudong,Zhuang, Qianlai,Chen, Min,et al. Rising methane emissions in response to climate change in Northern Eurasia during the 21st century[J]. ENVIRONMENTAL RESEARCH LETTERS,2011,6(4).
APA Zhu, Xudong.,Zhuang, Qianlai.,Chen, Min.,Sirin, Andrey.,Melillo, Jerry.,...&Song, Lulu.(2011).Rising methane emissions in response to climate change in Northern Eurasia during the 21st century.ENVIRONMENTAL RESEARCH LETTERS,6(4).
MLA Zhu, Xudong,et al."Rising methane emissions in response to climate change in Northern Eurasia during the 21st century".ENVIRONMENTAL RESEARCH LETTERS 6.4(2011).
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