Wetland Heterogeneity Determines Methane Emissions: A Pan-Arctic Synthesis
Methane (CH 4 ) emissions from pan-Arctic wetlands provide a potential positive feedback to global warming. However, the differences in CH 4 emissions across wetland types in these regions have not been well understood. We synthesized approximately 9000 static chamber CH 4 measurements during the gr...
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ftsmithonian:oai:figshare.com:article/14921683 2023-05-15T14:51:56+02:00 Wetland Heterogeneity Determines Methane Emissions: A Pan-Arctic Synthesis Tao Bao (1454998) Gensuo Jia (299687) Xiyan Xu (311040) 2021-07-07T00:00:00Z https://doi.org/10.1021/acs.est.1c01616.s001 unknown https://figshare.com/articles/journal_contribution/Wetland_Heterogeneity_Determines_Methane_Emissions_A_Pan-Arctic_Synthesis/14921683 doi:10.1021/acs.est.1c01616.s001 CC BY-NC 4.0 CC-BY-NC Biotechnology Ecology Marine Biology Inorganic Chemistry Plant Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified water table position wetland types water table positions Wetland Heterogeneity Determines Me. chamber CH 4 measurements CH 4 emission CH 4 emissions Pan-Arctic Synthesis Methane Text Journal contribution 2021 ftsmithonian https://doi.org/10.1021/acs.est.1c01616.s001 2021-07-25T17:46:38Z Methane (CH 4 ) emissions from pan-Arctic wetlands provide a potential positive feedback to global warming. However, the differences in CH 4 emissions across wetland types in these regions have not been well understood. We synthesized approximately 9000 static chamber CH 4 measurements during the growing season from 83 sites across pan-Arctic regions. We highlighted spatial variations of CH 4 emissions corresponding to environmental heterogeneity across wetland types. CH 4 emission is the highest in fens, followed by marshes, bogs, and the lowest in swamps. This gradient is controlled by the water table, soil temperature, and dominant plant functional types and their interactions. The water table position for maximum CH 4 emission is below, close to, and above the ground surface in bogs, marshes/fens, and swamps, respectively. The temperature sensitivity ( Q 10 ) of CH 4 emissions varied among different wetland types, ranging from the lowest in swamps to the highest in fens. The interactive impact of temperature and the water table positions on CH 4 emissions are regulated with dominant plant functional types. CH 4 emissions from wetlands dominated by vascular plants rely more on species composition than that dominated by non-vascular plants. Wetlands with greater abundance of graminoids (e.g., fens) have higher CH 4 emissions than tree-dominated wetlands (e.g., swamps). This synthesis emphasizes the role of wetland heterogeneity in determining the strength of CH 4 emissions. Other Non-Article Part of Journal/Newspaper Arctic Global warming Unknown Arctic |
institution |
Open Polar |
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op_collection_id |
ftsmithonian |
language |
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topic |
Biotechnology Ecology Marine Biology Inorganic Chemistry Plant Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified water table position wetland types water table positions Wetland Heterogeneity Determines Me. chamber CH 4 measurements CH 4 emission CH 4 emissions Pan-Arctic Synthesis Methane |
spellingShingle |
Biotechnology Ecology Marine Biology Inorganic Chemistry Plant Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified water table position wetland types water table positions Wetland Heterogeneity Determines Me. chamber CH 4 measurements CH 4 emission CH 4 emissions Pan-Arctic Synthesis Methane Tao Bao (1454998) Gensuo Jia (299687) Xiyan Xu (311040) Wetland Heterogeneity Determines Methane Emissions: A Pan-Arctic Synthesis |
topic_facet |
Biotechnology Ecology Marine Biology Inorganic Chemistry Plant Biology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified water table position wetland types water table positions Wetland Heterogeneity Determines Me. chamber CH 4 measurements CH 4 emission CH 4 emissions Pan-Arctic Synthesis Methane |
description |
Methane (CH 4 ) emissions from pan-Arctic wetlands provide a potential positive feedback to global warming. However, the differences in CH 4 emissions across wetland types in these regions have not been well understood. We synthesized approximately 9000 static chamber CH 4 measurements during the growing season from 83 sites across pan-Arctic regions. We highlighted spatial variations of CH 4 emissions corresponding to environmental heterogeneity across wetland types. CH 4 emission is the highest in fens, followed by marshes, bogs, and the lowest in swamps. This gradient is controlled by the water table, soil temperature, and dominant plant functional types and their interactions. The water table position for maximum CH 4 emission is below, close to, and above the ground surface in bogs, marshes/fens, and swamps, respectively. The temperature sensitivity ( Q 10 ) of CH 4 emissions varied among different wetland types, ranging from the lowest in swamps to the highest in fens. The interactive impact of temperature and the water table positions on CH 4 emissions are regulated with dominant plant functional types. CH 4 emissions from wetlands dominated by vascular plants rely more on species composition than that dominated by non-vascular plants. Wetlands with greater abundance of graminoids (e.g., fens) have higher CH 4 emissions than tree-dominated wetlands (e.g., swamps). This synthesis emphasizes the role of wetland heterogeneity in determining the strength of CH 4 emissions. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Tao Bao (1454998) Gensuo Jia (299687) Xiyan Xu (311040) |
author_facet |
Tao Bao (1454998) Gensuo Jia (299687) Xiyan Xu (311040) |
author_sort |
Tao Bao (1454998) |
title |
Wetland Heterogeneity Determines Methane Emissions: A Pan-Arctic Synthesis |
title_short |
Wetland Heterogeneity Determines Methane Emissions: A Pan-Arctic Synthesis |
title_full |
Wetland Heterogeneity Determines Methane Emissions: A Pan-Arctic Synthesis |
title_fullStr |
Wetland Heterogeneity Determines Methane Emissions: A Pan-Arctic Synthesis |
title_full_unstemmed |
Wetland Heterogeneity Determines Methane Emissions: A Pan-Arctic Synthesis |
title_sort |
wetland heterogeneity determines methane emissions: a pan-arctic synthesis |
publishDate |
2021 |
url |
https://doi.org/10.1021/acs.est.1c01616.s001 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming |
genre_facet |
Arctic Global warming |
op_relation |
https://figshare.com/articles/journal_contribution/Wetland_Heterogeneity_Determines_Methane_Emissions_A_Pan-Arctic_Synthesis/14921683 doi:10.1021/acs.est.1c01616.s001 |
op_rights |
CC BY-NC 4.0 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1021/acs.est.1c01616.s001 |
_version_ |
1766323072670892032 |