Artificial drainage and associated carbon fluxes (CO 2 /CH 4 ) in a tundra ecosystem
Ecosystem flux measurements using the eddy covariance (EC) technique were undertaken in 4 subsequent years during summer for a total of 562 days in an arctic wet tundra ecosystem, located near Cherskii, Far-Eastern Federal District, Russia. Methane (CH 4 ) emissions were measured using permanent cha...
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ftpubman:oai:pure.mpg.de:item_1692807 2023-08-27T04:08:02+02:00 Artificial drainage and associated carbon fluxes (CO 2 /CH 4 ) in a tundra ecosystem Merbold, L. Kutsch, W. Corradi, C. Kolle, O. Rebmann, C. Stoy, P. Zimov, S. Schulze, E. 2009 application/octet-stream http://hdl.handle.net/11858/00-001M-0000-000E-D883-9 http://hdl.handle.net/11858/00-001M-0000-000E-D882-B unknown info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2486.2009.01962.x http://hdl.handle.net/11858/00-001M-0000-000E-D883-9 http://hdl.handle.net/11858/00-001M-0000-000E-D882-B Global Change Biology info:eu-repo/semantics/article 2009 ftpubman https://doi.org/10.1111/j.1365-2486.2009.01962.x 2023-08-02T01:02:08Z Ecosystem flux measurements using the eddy covariance (EC) technique were undertaken in 4 subsequent years during summer for a total of 562 days in an arctic wet tundra ecosystem, located near Cherskii, Far-Eastern Federal District, Russia. Methane (CH 4 ) emissions were measured using permanent chambers. The experimental field is characterized by late thawing of permafrost soils in June and periodic spring floods. A stagnant water table below the grass canopy is fed by melting of the active layer of permafrost and by flood water. Following 3 years of EC measurements, the site was drained by building a 3 m wide drainage channel surrounding the EC tower to examine possible future effects of global change on the tundra tussock ecosystem. Cumulative summertime net carbon fluxes before experimental alteration were estimated to be about +15 g C m22122 (i.e. an ecosystem C loss) and +8 g C m22122 after draining the study site. When taking CH 4 as another important greenhouse gas into account and considering the global warming potential (GWP) of CH 4 vs. CO 2 , the ecosystem had a positive GWP during all summers. However CH 4 emissions after drainage decreased significantly and therefore the carbon related greenhouse gas flux was much smaller than beforehand (475 ± 253 g C-CO 2 -e m22122 before drainage in 2003 vs. 23 ± 26 g C-CO 2 -e m22122 after drainage in 2005). Article in Journal/Newspaper Arctic Global warming permafrost Tundra Max Planck Society: MPG.PuRe Arctic Global Change Biology 15 11 2599 2614 |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
unknown |
description |
Ecosystem flux measurements using the eddy covariance (EC) technique were undertaken in 4 subsequent years during summer for a total of 562 days in an arctic wet tundra ecosystem, located near Cherskii, Far-Eastern Federal District, Russia. Methane (CH 4 ) emissions were measured using permanent chambers. The experimental field is characterized by late thawing of permafrost soils in June and periodic spring floods. A stagnant water table below the grass canopy is fed by melting of the active layer of permafrost and by flood water. Following 3 years of EC measurements, the site was drained by building a 3 m wide drainage channel surrounding the EC tower to examine possible future effects of global change on the tundra tussock ecosystem. Cumulative summertime net carbon fluxes before experimental alteration were estimated to be about +15 g C m22122 (i.e. an ecosystem C loss) and +8 g C m22122 after draining the study site. When taking CH 4 as another important greenhouse gas into account and considering the global warming potential (GWP) of CH 4 vs. CO 2 , the ecosystem had a positive GWP during all summers. However CH 4 emissions after drainage decreased significantly and therefore the carbon related greenhouse gas flux was much smaller than beforehand (475 ± 253 g C-CO 2 -e m22122 before drainage in 2003 vs. 23 ± 26 g C-CO 2 -e m22122 after drainage in 2005). |
format |
Article in Journal/Newspaper |
author |
Merbold, L. Kutsch, W. Corradi, C. Kolle, O. Rebmann, C. Stoy, P. Zimov, S. Schulze, E. |
spellingShingle |
Merbold, L. Kutsch, W. Corradi, C. Kolle, O. Rebmann, C. Stoy, P. Zimov, S. Schulze, E. Artificial drainage and associated carbon fluxes (CO 2 /CH 4 ) in a tundra ecosystem |
author_facet |
Merbold, L. Kutsch, W. Corradi, C. Kolle, O. Rebmann, C. Stoy, P. Zimov, S. Schulze, E. |
author_sort |
Merbold, L. |
title |
Artificial drainage and associated carbon fluxes (CO 2 /CH 4 ) in a tundra ecosystem |
title_short |
Artificial drainage and associated carbon fluxes (CO 2 /CH 4 ) in a tundra ecosystem |
title_full |
Artificial drainage and associated carbon fluxes (CO 2 /CH 4 ) in a tundra ecosystem |
title_fullStr |
Artificial drainage and associated carbon fluxes (CO 2 /CH 4 ) in a tundra ecosystem |
title_full_unstemmed |
Artificial drainage and associated carbon fluxes (CO 2 /CH 4 ) in a tundra ecosystem |
title_sort |
artificial drainage and associated carbon fluxes (co 2 /ch 4 ) in a tundra ecosystem |
publishDate |
2009 |
url |
http://hdl.handle.net/11858/00-001M-0000-000E-D883-9 http://hdl.handle.net/11858/00-001M-0000-000E-D882-B |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming permafrost Tundra |
genre_facet |
Arctic Global warming permafrost Tundra |
op_source |
Global Change Biology |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2486.2009.01962.x http://hdl.handle.net/11858/00-001M-0000-000E-D883-9 http://hdl.handle.net/11858/00-001M-0000-000E-D882-B |
op_doi |
https://doi.org/10.1111/j.1365-2486.2009.01962.x |
container_title |
Global Change Biology |
container_volume |
15 |
container_issue |
11 |
container_start_page |
2599 |
op_container_end_page |
2614 |
_version_ |
1775348736585629696 |