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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fttriple:oai:gotriple.eu:oai:doaj.org/article:1ed325b79e064e55aa157f407d8d2864 2023-05-15T16:28:14+02:00 Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland J. Palmtag S. Cable H. H. Christiansen G. Hugelius P. Kuhry 2018-05-01 https://doi.org/10.5194/tc-12-1735-2018 https://www.the-cryosphere.net/12/1735/2018/tc-12-1735-2018.pdf https://doaj.org/article/1ed325b79e064e55aa157f407d8d2864 en eng Copernicus Publications doi:10.5194/tc-12-1735-2018 1994-0416 1994-0424 https://www.the-cryosphere.net/12/1735/2018/tc-12-1735-2018.pdf https://doaj.org/article/1ed325b79e064e55aa157f407d8d2864 undefined The Cryosphere, Vol 12, Pp 1735-1744 (2018) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.5194/tc-12-1735-2018 2023-01-22T17:55:35Z 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. Article in Journal/Newspaper Greenland permafrost The Cryosphere Zackenberg Unknown Greenland The Cryosphere 12 5 1735 1744 |
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English |
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envir geo |
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envir geo J. Palmtag S. Cable H. H. Christiansen G. Hugelius P. Kuhry Landform partitioning and estimates of deep storage of soil organic matter in Zackenberg, Greenland |
topic_facet |
envir geo |
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 |
Article in Journal/Newspaper |
author |
J. Palmtag S. Cable H. H. Christiansen G. Hugelius P. Kuhry |
author_facet |
J. Palmtag S. Cable H. H. Christiansen G. Hugelius P. Kuhry |
author_sort |
J. Palmtag |
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 |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-1735-2018 https://www.the-cryosphere.net/12/1735/2018/tc-12-1735-2018.pdf https://doaj.org/article/1ed325b79e064e55aa157f407d8d2864 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland permafrost The Cryosphere Zackenberg |
genre_facet |
Greenland permafrost The Cryosphere Zackenberg |
op_source |
The Cryosphere, Vol 12, Pp 1735-1744 (2018) |
op_relation |
doi:10.5194/tc-12-1735-2018 1994-0416 1994-0424 https://www.the-cryosphere.net/12/1735/2018/tc-12-1735-2018.pdf https://doaj.org/article/1ed325b79e064e55aa157f407d8d2864 |
op_rights |
undefined |
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 |
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1766017858710536192 |