Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing
Thawing permafrost in the sub-Arctic has implications for the physical stability and biological dynamics of peatland ecosystems. This study provides an analysis of how permafrost thawing and subsequent vegetation changes in a sub-Arctic Swedish mire have changed the net exchange of greenhouse gases,...
Published in: | Global Change Biology |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley-Blackwell
2006
|
Subjects: | |
Online Access: | https://lup.lub.lu.se/record/164464 https://doi.org/10.1111/j.1365-2486.2006.01267.x |
id |
ftulundlup:oai:lup.lub.lu.se:5e3d406a-5dc2-412e-a50c-145119a13675 |
---|---|
record_format |
openpolar |
spelling |
ftulundlup:oai:lup.lub.lu.se:5e3d406a-5dc2-412e-a50c-145119a13675 2023-05-15T14:54:18+02:00 Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing Johansson, T Malmer, Nils Crill, P M Friborg, T Åkerman, Jonas Mastepanov, Mikhail Christensen, Torben 2006 https://lup.lub.lu.se/record/164464 https://doi.org/10.1111/j.1365-2486.2006.01267.x eng eng Wiley-Blackwell https://lup.lub.lu.se/record/164464 http://dx.doi.org/10.1111/j.1365-2486.2006.01267.x wos:000242659400010 scopus:33845273318 Global Change Biology; 12(12), pp 2352-2369 (2006) ISSN: 1354-1013 Ecology Physical Geography peatland permafrost Sweden northern GWP greenhouse gases aerial CIR photography carbon balance radiative forcing sub-Arctic vegetation change contributiontojournal/article info:eu-repo/semantics/article text 2006 ftulundlup https://doi.org/10.1111/j.1365-2486.2006.01267.x 2023-02-01T23:32:45Z Thawing permafrost in the sub-Arctic has implications for the physical stability and biological dynamics of peatland ecosystems. This study provides an analysis of how permafrost thawing and subsequent vegetation changes in a sub-Arctic Swedish mire have changed the net exchange of greenhouse gases, carbon dioxide (CO2) and CH4 over the past three decades. Images of the mire (ca. 17 ha) and surroundings taken with film sensitive in the visible and the near infrared portion of the spectrum, [i.e. colour infrared (CIR) aerial photographs from 1970 and 2000] were used. The results show that during this period the area covered by hummock vegetation decreased by more than 11% and became replaced by wet-growing plant communities. The overall net uptake of C in the vegetation and the release of C by heterotrophic respiration might have increased resulting in increases in both the growing season atmospheric CO2 sink function with about 16% and the CH4 emissions with 22%. Calculating the flux as CO2 equivalents show that the mire in 2000 has a 47% greater radiative forcing on the atmosphere using a 100-year time horizon. Northern peatlands in areas with thawing sporadic or discontinuous permafrost are likely to act as larger greenhouse gas sources over the growing season today than a few decades ago because of increased CH4 emissions. Article in Journal/Newspaper Arctic permafrost Lund University Publications (LUP) Arctic Global Change Biology 12 12 2352 2369 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology Physical Geography peatland permafrost Sweden northern GWP greenhouse gases aerial CIR photography carbon balance radiative forcing sub-Arctic vegetation change |
spellingShingle |
Ecology Physical Geography peatland permafrost Sweden northern GWP greenhouse gases aerial CIR photography carbon balance radiative forcing sub-Arctic vegetation change Johansson, T Malmer, Nils Crill, P M Friborg, T Åkerman, Jonas Mastepanov, Mikhail Christensen, Torben Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing |
topic_facet |
Ecology Physical Geography peatland permafrost Sweden northern GWP greenhouse gases aerial CIR photography carbon balance radiative forcing sub-Arctic vegetation change |
description |
Thawing permafrost in the sub-Arctic has implications for the physical stability and biological dynamics of peatland ecosystems. This study provides an analysis of how permafrost thawing and subsequent vegetation changes in a sub-Arctic Swedish mire have changed the net exchange of greenhouse gases, carbon dioxide (CO2) and CH4 over the past three decades. Images of the mire (ca. 17 ha) and surroundings taken with film sensitive in the visible and the near infrared portion of the spectrum, [i.e. colour infrared (CIR) aerial photographs from 1970 and 2000] were used. The results show that during this period the area covered by hummock vegetation decreased by more than 11% and became replaced by wet-growing plant communities. The overall net uptake of C in the vegetation and the release of C by heterotrophic respiration might have increased resulting in increases in both the growing season atmospheric CO2 sink function with about 16% and the CH4 emissions with 22%. Calculating the flux as CO2 equivalents show that the mire in 2000 has a 47% greater radiative forcing on the atmosphere using a 100-year time horizon. Northern peatlands in areas with thawing sporadic or discontinuous permafrost are likely to act as larger greenhouse gas sources over the growing season today than a few decades ago because of increased CH4 emissions. |
format |
Article in Journal/Newspaper |
author |
Johansson, T Malmer, Nils Crill, P M Friborg, T Åkerman, Jonas Mastepanov, Mikhail Christensen, Torben |
author_facet |
Johansson, T Malmer, Nils Crill, P M Friborg, T Åkerman, Jonas Mastepanov, Mikhail Christensen, Torben |
author_sort |
Johansson, T |
title |
Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing |
title_short |
Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing |
title_full |
Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing |
title_fullStr |
Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing |
title_full_unstemmed |
Decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing |
title_sort |
decadal vegetation changes in a northern peatland, greenhouse gas fluxes and net radiative forcing |
publisher |
Wiley-Blackwell |
publishDate |
2006 |
url |
https://lup.lub.lu.se/record/164464 https://doi.org/10.1111/j.1365-2486.2006.01267.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Global Change Biology; 12(12), pp 2352-2369 (2006) ISSN: 1354-1013 |
op_relation |
https://lup.lub.lu.se/record/164464 http://dx.doi.org/10.1111/j.1365-2486.2006.01267.x wos:000242659400010 scopus:33845273318 |
op_doi |
https://doi.org/10.1111/j.1365-2486.2006.01267.x |
container_title |
Global Change Biology |
container_volume |
12 |
container_issue |
12 |
container_start_page |
2352 |
op_container_end_page |
2369 |
_version_ |
1766326020642701312 |