Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland
The reduction of permafrost areas and a prolonged vegetation period, both due to the ongoing climate change, open up new possibilities for agricultural activities in the circumpolar region. Presently, not much is known about the physical and functional properties of subarctic agricultural soils, mak...
Published in: | Geoderma |
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Language: | English |
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2020
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Online Access: | https://vbn.aau.dk/da/publications/7dc52851-c112-43c3-b428-3b7c29143f0b https://doi.org/10.1016/j.geoderma.2020.114608 https://vbn.aau.dk/ws/files/407732130/Compression_and_rebound_characteristics_of_agricultural_sandy_pasture_soils_from_South_Greenland.pdf http://www.scopus.com/inward/record.url?scp=85089471460&partnerID=8YFLogxK |
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ftalborgunivpubl:oai:pure.atira.dk:publications/7dc52851-c112-43c3-b428-3b7c29143f0b 2024-06-23T07:50:42+00:00 Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland Pesch, Charles Lamandé, Mathieu de Jonge, Lis Wollesen Norgaard, Trine Greve, Mogens Humlekrog Moldrup, Per 2020-12-15 application/pdf https://vbn.aau.dk/da/publications/7dc52851-c112-43c3-b428-3b7c29143f0b https://doi.org/10.1016/j.geoderma.2020.114608 https://vbn.aau.dk/ws/files/407732130/Compression_and_rebound_characteristics_of_agricultural_sandy_pasture_soils_from_South_Greenland.pdf http://www.scopus.com/inward/record.url?scp=85089471460&partnerID=8YFLogxK eng eng https://vbn.aau.dk/da/publications/7dc52851-c112-43c3-b428-3b7c29143f0b info:eu-repo/semantics/openAccess Pesch , C , Lamandé , M , de Jonge , L W , Norgaard , T , Greve , M H & Moldrup , P 2020 , ' Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland ' , Geoderma , vol. 380 , 114608 . https://doi.org/10.1016/j.geoderma.2020.114608 Arctic pasture soils Compression index Precompression stress Rebound Swelling index Temperate cultivated soils article 2020 ftalborgunivpubl https://doi.org/10.1016/j.geoderma.2020.114608 2024-06-03T15:01:43Z The reduction of permafrost areas and a prolonged vegetation period, both due to the ongoing climate change, open up new possibilities for agricultural activities in the circumpolar region. Presently, not much is known about the physical and functional properties of subarctic agricultural soils, making it challenging to evaluate soil impacts from increased agricultural activity. This study aims at assessing the mechanical properties of sandy Greenlandic pasture soils regarding a potential future land-use change. The compression curves of 210 undisturbed soil core samples of three pasture fields in South Greenland and, as comparison, four intensively cultivated agricultural fields in Denmark were generated by uniaxial confined compression tests (UCCT). Four soil mechanical properties were determined: the precompression stress (σ pc ) as a measure of soil strength, the compression index (C c ) as a measure of compressibility, the swelling index (C s ) as a measure of resilience to compaction and the rebound (Δε) after a relaxation time of 60 s as a measure of short-time recovery from compaction. The Greenlandic pasture soils exhibited significantly higher σ pc than the Danish cultivated soils despite their significantly lower initial bulk density, ρ b . The C c negatively correlated with ρ b , and the Greenlandic soils showed higher C c values than the Danish soils. The C s showed a reciprocal correlation with ρ b and, partly due to lower ρ b of the Greenlandic soils, higher C s than the Danish soils. The South Greenlandic sandy pasture soils showed compression and rebound characteristics on level with Danish loamy cultivated soils, likely due to a high content of particulate organic matter (non-degraded organic matter, including grass root-mat residues). Article in Journal/Newspaper Arctic Climate change Greenland greenlandic permafrost Subarctic Aalborg University's Research Portal Arctic Greenland Geoderma 380 114608 |
institution |
Open Polar |
collection |
Aalborg University's Research Portal |
op_collection_id |
ftalborgunivpubl |
language |
English |
topic |
Arctic pasture soils Compression index Precompression stress Rebound Swelling index Temperate cultivated soils |
spellingShingle |
Arctic pasture soils Compression index Precompression stress Rebound Swelling index Temperate cultivated soils Pesch, Charles Lamandé, Mathieu de Jonge, Lis Wollesen Norgaard, Trine Greve, Mogens Humlekrog Moldrup, Per Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland |
topic_facet |
Arctic pasture soils Compression index Precompression stress Rebound Swelling index Temperate cultivated soils |
description |
The reduction of permafrost areas and a prolonged vegetation period, both due to the ongoing climate change, open up new possibilities for agricultural activities in the circumpolar region. Presently, not much is known about the physical and functional properties of subarctic agricultural soils, making it challenging to evaluate soil impacts from increased agricultural activity. This study aims at assessing the mechanical properties of sandy Greenlandic pasture soils regarding a potential future land-use change. The compression curves of 210 undisturbed soil core samples of three pasture fields in South Greenland and, as comparison, four intensively cultivated agricultural fields in Denmark were generated by uniaxial confined compression tests (UCCT). Four soil mechanical properties were determined: the precompression stress (σ pc ) as a measure of soil strength, the compression index (C c ) as a measure of compressibility, the swelling index (C s ) as a measure of resilience to compaction and the rebound (Δε) after a relaxation time of 60 s as a measure of short-time recovery from compaction. The Greenlandic pasture soils exhibited significantly higher σ pc than the Danish cultivated soils despite their significantly lower initial bulk density, ρ b . The C c negatively correlated with ρ b , and the Greenlandic soils showed higher C c values than the Danish soils. The C s showed a reciprocal correlation with ρ b and, partly due to lower ρ b of the Greenlandic soils, higher C s than the Danish soils. The South Greenlandic sandy pasture soils showed compression and rebound characteristics on level with Danish loamy cultivated soils, likely due to a high content of particulate organic matter (non-degraded organic matter, including grass root-mat residues). |
format |
Article in Journal/Newspaper |
author |
Pesch, Charles Lamandé, Mathieu de Jonge, Lis Wollesen Norgaard, Trine Greve, Mogens Humlekrog Moldrup, Per |
author_facet |
Pesch, Charles Lamandé, Mathieu de Jonge, Lis Wollesen Norgaard, Trine Greve, Mogens Humlekrog Moldrup, Per |
author_sort |
Pesch, Charles |
title |
Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland |
title_short |
Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland |
title_full |
Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland |
title_fullStr |
Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland |
title_full_unstemmed |
Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland |
title_sort |
compression and rebound characteristics of agricultural sandy pasture soils from south greenland |
publishDate |
2020 |
url |
https://vbn.aau.dk/da/publications/7dc52851-c112-43c3-b428-3b7c29143f0b https://doi.org/10.1016/j.geoderma.2020.114608 https://vbn.aau.dk/ws/files/407732130/Compression_and_rebound_characteristics_of_agricultural_sandy_pasture_soils_from_South_Greenland.pdf http://www.scopus.com/inward/record.url?scp=85089471460&partnerID=8YFLogxK |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Climate change Greenland greenlandic permafrost Subarctic |
genre_facet |
Arctic Climate change Greenland greenlandic permafrost Subarctic |
op_source |
Pesch , C , Lamandé , M , de Jonge , L W , Norgaard , T , Greve , M H & Moldrup , P 2020 , ' Compression and rebound characteristics of agricultural sandy pasture soils from South Greenland ' , Geoderma , vol. 380 , 114608 . https://doi.org/10.1016/j.geoderma.2020.114608 |
op_relation |
https://vbn.aau.dk/da/publications/7dc52851-c112-43c3-b428-3b7c29143f0b |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.geoderma.2020.114608 |
container_title |
Geoderma |
container_volume |
380 |
container_start_page |
114608 |
_version_ |
1802641609316106240 |