Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland
Soils in the northern high latitudes are a key component in the global carbon cycle, with potential feedback on climate. This study aims to improve the previous soil organic carbon (SOC) and total nitrogen (TN) storage estimates for the Zackenberg area (NE Greenland) that were based on a land cover...
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Language: | English |
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ftcopernicus:oai:publications.copernicus.org:tc63203 2023-05-15T16:28:15+02:00 Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland Palmtag, Juri Cable, Stefanie Christiansen, Hanne H. Hugelius, Gustaf Kuhry, Peter 2019-01-11 info:eu-repo/semantics/application/pdf https://doi.org/10.5194/tc-12-1735-2018 https://tc.copernicus.org/articles/12/1735/2018/ eng eng info:eu-repo/grantAgreement/EC/FP7/282700 doi:10.5194/tc-12-1735-2018 https://tc.copernicus.org/articles/12/1735/2018/ info:eu-repo/semantics/openAccess eISSN: 1994-0424 info:eu-repo/semantics/Text 2019 ftcopernicus https://doi.org/10.5194/tc-12-1735-2018 2020-07-20T16:23:18Z Soils in the northern high latitudes are a key component in the global carbon cycle, with potential feedback on climate. This study aims to improve the previous soil organic carbon (SOC) and total nitrogen (TN) storage estimates for the Zackenberg area (NE Greenland) that were based on a land cover classification (LCC) approach, by using geomorphological upscaling. In addition, novel organic carbon (OC) estimates for deeper alluvial and deltaic deposits (down to 300 cm depth) are presented. We hypothesise that landforms will better represent the long-term slope and depositional processes that result in deep SOC burial in this type of mountain permafrost environments. The updated mean SOC storage for the 0–100 cm soil depth is 4.8 kg C m −2 , which is 42 % lower than the previous estimate of 8.3 kg C m −2 based on land cover upscaling. Similarly, the mean soil TN storage in the 0–100 cm depth decreased with 44 % from 0.50 kg ( ± 0.1 CI) to 0.28 ( ± 0.1 CI) kg TN m −2 . We ascribe the differences to a previous areal overestimate of SOC- and TN-rich vegetated land cover classes. The landform-based approach more correctly constrains the depositional areas in alluvial fans and deltas with high SOC and TN storage. These are also areas of deep carbon storage with an additional 2.4 kg C m −2 in the 100–300 cm depth interval. This research emphasises the need to consider geomorphology when assessing SOC pools in mountain permafrost landscapes. Other/Unknown Material Greenland permafrost Zackenberg Copernicus Publications: E-Journals Greenland The Cryosphere 12 5 1735 1744 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Soils in the northern high latitudes are a key component in the global carbon cycle, with potential feedback on climate. This study aims to improve the previous soil organic carbon (SOC) and total nitrogen (TN) storage estimates for the Zackenberg area (NE Greenland) that were based on a land cover classification (LCC) approach, by using geomorphological upscaling. In addition, novel organic carbon (OC) estimates for deeper alluvial and deltaic deposits (down to 300 cm depth) are presented. We hypothesise that landforms will better represent the long-term slope and depositional processes that result in deep SOC burial in this type of mountain permafrost environments. The updated mean SOC storage for the 0–100 cm soil depth is 4.8 kg C m −2 , which is 42 % lower than the previous estimate of 8.3 kg C m −2 based on land cover upscaling. Similarly, the mean soil TN storage in the 0–100 cm depth decreased with 44 % from 0.50 kg ( ± 0.1 CI) to 0.28 ( ± 0.1 CI) kg TN m −2 . We ascribe the differences to a previous areal overestimate of SOC- and TN-rich vegetated land cover classes. The landform-based approach more correctly constrains the depositional areas in alluvial fans and deltas with high SOC and TN storage. These are also areas of deep carbon storage with an additional 2.4 kg C m −2 in the 100–300 cm depth interval. This research emphasises the need to consider geomorphology when assessing SOC pools in mountain permafrost landscapes. |
format |
Other/Unknown Material |
author |
Palmtag, Juri Cable, Stefanie Christiansen, Hanne H. Hugelius, Gustaf Kuhry, Peter |
spellingShingle |
Palmtag, Juri Cable, Stefanie Christiansen, Hanne H. Hugelius, Gustaf Kuhry, Peter Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland |
author_facet |
Palmtag, Juri Cable, Stefanie Christiansen, Hanne H. Hugelius, Gustaf Kuhry, Peter |
author_sort |
Palmtag, Juri |
title |
Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland |
title_short |
Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland |
title_full |
Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland |
title_fullStr |
Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland |
title_full_unstemmed |
Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland |
title_sort |
landform partitioning and estimates of deep storage of soil organic matter in zackenberg, greenland |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-12-1735-2018 https://tc.copernicus.org/articles/12/1735/2018/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland permafrost Zackenberg |
genre_facet |
Greenland permafrost Zackenberg |
op_source |
eISSN: 1994-0424 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/282700 doi:10.5194/tc-12-1735-2018 https://tc.copernicus.org/articles/12/1735/2018/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-12-1735-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
5 |
container_start_page |
1735 |
op_container_end_page |
1744 |
_version_ |
1766017890364948480 |