Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic
Across the Arctic, the net ecosystem carbon (C) balance of tundra ecosystems is highly uncertain due to substantial temporal variability of C fluxes and to landscape heterogeneity. We modeled both carbon dioxide (CO2) and methane (CH4) fluxes for the dominant land cover types in a ~100‐km2 sub‐Arcti...
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ftuniveasternfin:oai:erepo.uef.fi:123456789/6953 2023-05-15T14:48:20+02:00 Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic Treat, CC Marushchak, ME Voigt, C Zhang, Y Tan, Z Zhuang, Q Virtanen, TA Räsänen, A Biasi, C Hugelius, G Kaverin, D Miller, PA Stendel, M Romanovsky, V Rivkin, F Martikainen, PJ Shurpali, NJ Ympäristö- ja biotieteiden laitos / Toiminta 2018-09-25T06:36:31Z 5188-5204 https://erepo.uef.fi/handle/123456789/6953 englanti unknown Wiley GLOBAL CHANGE BIOLOGY http://dx.doi.org/10.1111/gcb.14421 info:eu-repo/grantAgreement/EC/FP6-SUSTDEV/36993/EU/Quantifying the Carbon budget in Northern Russia: past, present and future/CARBO-NORTH 10.1111/gcb.14421 1354-1013 11 24 https://erepo.uef.fi/handle/123456789/6953 In copyright 1.0 openAccess © John Wiley & Sons Ltd https://rightsstatements.org/page/InC/1.0/ tundra Russia regional carbon balance net ecosystem CO2 exchange methane 37 ecosystem modeling permafrost peatland Tieteelliset aikakauslehtiartikkelit A1 article artikkeli 2018 ftuniveasternfin https://doi.org/10.1111/gcb.14421 2023-01-25T23:58:26Z Across the Arctic, the net ecosystem carbon (C) balance of tundra ecosystems is highly uncertain due to substantial temporal variability of C fluxes and to landscape heterogeneity. We modeled both carbon dioxide (CO2) and methane (CH4) fluxes for the dominant land cover types in a ~100‐km2 sub‐Arctic tundra region in northeast European Russia for the period of 2006–2015 using process‐based biogeochemical models. Modeled net annual CO2 fluxes ranged from −300 g C m−2 year−1 [net uptake] in a willow fen to 3 g C m−2 year−1 [net source] in dry lichen tundra. Modeled annual CH4 emissions ranged from −0.2 to 22.3 g C m−2 year−1 at a peat plateau site and a willow fen site, respectively. Interannual variability over the decade was relatively small (20%–25%) in comparison with variability among the land cover types (150%). Using high‐resolution land cover classification, the region was a net sink of atmospheric CO2 across most land cover types but a net source of CH4 to the atmosphere due to high emissions from permafrost‐free fens. Using a lower resolution for land cover classification resulted in a 20%–65% underestimation of regional CH4 flux relative to high‐resolution classification and smaller (10%) overestimation of regional CO2 uptake due to the underestimation of wetland area by 60%. The relative fraction of uplands versus wetlands was key to determining the net regional C balance at this and other Arctic tundra sites because wetlands were hot spots for C cycling in Arctic tundra ecosystems. final draft peerReviewed Article in Journal/Newspaper Arctic Peat Peat plateau permafrost Tundra UEF eRepository (University of Eastern Finland) Arctic Global Change Biology 24 11 5188 5204 |
institution |
Open Polar |
collection |
UEF eRepository (University of Eastern Finland) |
op_collection_id |
ftuniveasternfin |
language |
unknown |
topic |
tundra Russia regional carbon balance net ecosystem CO2 exchange methane 37 ecosystem modeling permafrost peatland |
spellingShingle |
tundra Russia regional carbon balance net ecosystem CO2 exchange methane 37 ecosystem modeling permafrost peatland Treat, CC Marushchak, ME Voigt, C Zhang, Y Tan, Z Zhuang, Q Virtanen, TA Räsänen, A Biasi, C Hugelius, G Kaverin, D Miller, PA Stendel, M Romanovsky, V Rivkin, F Martikainen, PJ Shurpali, NJ Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic |
topic_facet |
tundra Russia regional carbon balance net ecosystem CO2 exchange methane 37 ecosystem modeling permafrost peatland |
description |
Across the Arctic, the net ecosystem carbon (C) balance of tundra ecosystems is highly uncertain due to substantial temporal variability of C fluxes and to landscape heterogeneity. We modeled both carbon dioxide (CO2) and methane (CH4) fluxes for the dominant land cover types in a ~100‐km2 sub‐Arctic tundra region in northeast European Russia for the period of 2006–2015 using process‐based biogeochemical models. Modeled net annual CO2 fluxes ranged from −300 g C m−2 year−1 [net uptake] in a willow fen to 3 g C m−2 year−1 [net source] in dry lichen tundra. Modeled annual CH4 emissions ranged from −0.2 to 22.3 g C m−2 year−1 at a peat plateau site and a willow fen site, respectively. Interannual variability over the decade was relatively small (20%–25%) in comparison with variability among the land cover types (150%). Using high‐resolution land cover classification, the region was a net sink of atmospheric CO2 across most land cover types but a net source of CH4 to the atmosphere due to high emissions from permafrost‐free fens. Using a lower resolution for land cover classification resulted in a 20%–65% underestimation of regional CH4 flux relative to high‐resolution classification and smaller (10%) overestimation of regional CO2 uptake due to the underestimation of wetland area by 60%. The relative fraction of uplands versus wetlands was key to determining the net regional C balance at this and other Arctic tundra sites because wetlands were hot spots for C cycling in Arctic tundra ecosystems. final draft peerReviewed |
author2 |
Ympäristö- ja biotieteiden laitos / Toiminta |
format |
Article in Journal/Newspaper |
author |
Treat, CC Marushchak, ME Voigt, C Zhang, Y Tan, Z Zhuang, Q Virtanen, TA Räsänen, A Biasi, C Hugelius, G Kaverin, D Miller, PA Stendel, M Romanovsky, V Rivkin, F Martikainen, PJ Shurpali, NJ |
author_facet |
Treat, CC Marushchak, ME Voigt, C Zhang, Y Tan, Z Zhuang, Q Virtanen, TA Räsänen, A Biasi, C Hugelius, G Kaverin, D Miller, PA Stendel, M Romanovsky, V Rivkin, F Martikainen, PJ Shurpali, NJ |
author_sort |
Treat, CC |
title |
Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic |
title_short |
Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic |
title_full |
Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic |
title_fullStr |
Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic |
title_full_unstemmed |
Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic |
title_sort |
tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the western russian arctic |
publisher |
Wiley |
publishDate |
2018 |
url |
https://erepo.uef.fi/handle/123456789/6953 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Peat Peat plateau permafrost Tundra |
genre_facet |
Arctic Peat Peat plateau permafrost Tundra |
op_relation |
GLOBAL CHANGE BIOLOGY http://dx.doi.org/10.1111/gcb.14421 info:eu-repo/grantAgreement/EC/FP6-SUSTDEV/36993/EU/Quantifying the Carbon budget in Northern Russia: past, present and future/CARBO-NORTH 10.1111/gcb.14421 1354-1013 11 24 https://erepo.uef.fi/handle/123456789/6953 |
op_rights |
In copyright 1.0 openAccess © John Wiley & Sons Ltd https://rightsstatements.org/page/InC/1.0/ |
op_doi |
https://doi.org/10.1111/gcb.14421 |
container_title |
Global Change Biology |
container_volume |
24 |
container_issue |
11 |
container_start_page |
5188 |
op_container_end_page |
5204 |
_version_ |
1766319431099613184 |