Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic
Campeau, A. B., Lafleur, P. M. and Humphreys, E. R. 2014. Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic. Can. J. Soil Sci. 94: 477–488. Arctic soils constitute a vast, but poorly quantified, pool of soil organic carbon (SOC). The uncertainty associated wit...
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crcansciencepubl:10.4141/cjss-2014-018 2023-12-17T10:24:07+01:00 Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic Campeau, A. Brett Lafleur, Peter M. Humphreys, Elyn R. 2014 http://dx.doi.org/10.4141/cjss-2014-018 http://www.nrcresearchpress.com/doi/full-xml/10.4141/cjss-2014-018 http://www.nrcresearchpress.com/doi/pdf/10.4141/cjss-2014-018 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Soil Science volume 94, issue 4, page 477-488 ISSN 0008-4271 1918-1841 Soil Science journal-article 2014 crcansciencepubl https://doi.org/10.4141/cjss-2014-018 2023-11-19T13:38:45Z Campeau, A. B., Lafleur, P. M. and Humphreys, E. R. 2014. Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic. Can. J. Soil Sci. 94: 477–488. Arctic soils constitute a vast, but poorly quantified, pool of soil organic carbon (SOC). The uncertainty associated with pan-Arctic SOC storage estimates – a result of limited SOC and land cover data – needs to be reduced if we are to better predict the impact of future changes to Arctic carbon stocks resulting from climate warming. In this study landscape-scale variability in SOC at a Southern Arctic Ecozone site in the central Canadian Arctic was investigated with the ultimate goal of up-scaling SOC estimates with a land cover classification system. Total SOC was estimated to depths of 30 cm and 50 cm for 76 soil pits, together representing eight different vegetation communities in seven different broad landscape units. Soil organic carbon to 50 cm was lowest for the xerophytic herb community in the esker complex landscape unit (7.2±2.2 SD kg m −2 ) and highest in the birch hummock terrain in the lowland tundra landscape unit (36.4±2.8 kg m −2 ), followed by wet sedge and dry sedge communities in the wetland complex (29.8±9.9 and 22.0±2.0 kg m −2 , respectively). The up-scaled estimates of mean SOC for the study area (excluding water) were 15.8 kg m −2 (to 50 cm) and 11.6 kg m −2 (to 30 cm). On a landscape scale, soil moisture content was found to have an important influence on SOC variability. Overall, this study highlights the importance of SOC variability at fine scales and its impact on up-scaling SOC in Arctic landscapes. Article in Journal/Newspaper Arctic Tundra Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Soil Science 94 4 477 488 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Soil Science |
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Soil Science Campeau, A. Brett Lafleur, Peter M. Humphreys, Elyn R. Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic |
topic_facet |
Soil Science |
description |
Campeau, A. B., Lafleur, P. M. and Humphreys, E. R. 2014. Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic. Can. J. Soil Sci. 94: 477–488. Arctic soils constitute a vast, but poorly quantified, pool of soil organic carbon (SOC). The uncertainty associated with pan-Arctic SOC storage estimates – a result of limited SOC and land cover data – needs to be reduced if we are to better predict the impact of future changes to Arctic carbon stocks resulting from climate warming. In this study landscape-scale variability in SOC at a Southern Arctic Ecozone site in the central Canadian Arctic was investigated with the ultimate goal of up-scaling SOC estimates with a land cover classification system. Total SOC was estimated to depths of 30 cm and 50 cm for 76 soil pits, together representing eight different vegetation communities in seven different broad landscape units. Soil organic carbon to 50 cm was lowest for the xerophytic herb community in the esker complex landscape unit (7.2±2.2 SD kg m −2 ) and highest in the birch hummock terrain in the lowland tundra landscape unit (36.4±2.8 kg m −2 ), followed by wet sedge and dry sedge communities in the wetland complex (29.8±9.9 and 22.0±2.0 kg m −2 , respectively). The up-scaled estimates of mean SOC for the study area (excluding water) were 15.8 kg m −2 (to 50 cm) and 11.6 kg m −2 (to 30 cm). On a landscape scale, soil moisture content was found to have an important influence on SOC variability. Overall, this study highlights the importance of SOC variability at fine scales and its impact on up-scaling SOC in Arctic landscapes. |
format |
Article in Journal/Newspaper |
author |
Campeau, A. Brett Lafleur, Peter M. Humphreys, Elyn R. |
author_facet |
Campeau, A. Brett Lafleur, Peter M. Humphreys, Elyn R. |
author_sort |
Campeau, A. Brett |
title |
Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic |
title_short |
Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic |
title_full |
Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic |
title_fullStr |
Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic |
title_full_unstemmed |
Landscape-scale variability in soil organic carbon storage in the central Canadian Arctic |
title_sort |
landscape-scale variability in soil organic carbon storage in the central canadian arctic |
publisher |
Canadian Science Publishing |
publishDate |
2014 |
url |
http://dx.doi.org/10.4141/cjss-2014-018 http://www.nrcresearchpress.com/doi/full-xml/10.4141/cjss-2014-018 http://www.nrcresearchpress.com/doi/pdf/10.4141/cjss-2014-018 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_source |
Canadian Journal of Soil Science volume 94, issue 4, page 477-488 ISSN 0008-4271 1918-1841 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.4141/cjss-2014-018 |
container_title |
Canadian Journal of Soil Science |
container_volume |
94 |
container_issue |
4 |
container_start_page |
477 |
op_container_end_page |
488 |
_version_ |
1785563006063607808 |