Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy
The particle density (ρ s ) is a fundamental physical property needed for calculating the soil porosity and phase distributions. While ρ s is often estimated using soil organic matter (SOM) content and particle size distribution, the specific densities of each soil component remain unclear in a suba...
Published in: | Soil Science Society of America Journal |
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2022
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Online Access: | https://pure.au.dk/portal/da/publications/evaluating-the-particle-densities-of-subarctic-soils-using-pedotransfer-functions-and-visnir-spectroscopy(2e7b2370-964a-442a-aa96-5047dccc4e4a).html https://doi.org/10.1002/saj2.20410 https://pure.au.dk/ws/files/300475593/Soil_Science_Soc_of_Amer_J_2022_Weber_Evaluating_the_particle_densities_of_subarctic_soils_using_pedotransfer.pdf http://www.scopus.com/inward/record.url?scp=85131520051&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/2e7b2370-964a-442a-aa96-5047dccc4e4a 2023-05-15T16:29:50+02:00 Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy Weber, Peter Lystbæk Hermansen, Cecilie Nørgaard, Trine Pesch, Charles Moldrup, Per Greve, Mogens H. Arthur, Emmanuel de Jonge, Lis 2022-07 application/pdf https://pure.au.dk/portal/da/publications/evaluating-the-particle-densities-of-subarctic-soils-using-pedotransfer-functions-and-visnir-spectroscopy(2e7b2370-964a-442a-aa96-5047dccc4e4a).html https://doi.org/10.1002/saj2.20410 https://pure.au.dk/ws/files/300475593/Soil_Science_Soc_of_Amer_J_2022_Weber_Evaluating_the_particle_densities_of_subarctic_soils_using_pedotransfer.pdf http://www.scopus.com/inward/record.url?scp=85131520051&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Weber , P L , Hermansen , C , Nørgaard , T , Pesch , C , Moldrup , P , Greve , M H , Arthur , E & de Jonge , L 2022 , ' Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy ' , Soil Science Society of America Journal , vol. 86 , no. 4 , pp. 964-978 . https://doi.org/10.1002/saj2.20410 article 2022 ftuniaarhuspubl https://doi.org/10.1002/saj2.20410 2023-01-04T23:56:45Z The particle density (ρ s ) is a fundamental physical property needed for calculating the soil porosity and phase distributions. While ρ s is often estimated using soil organic matter (SOM) content and particle size distribution, the specific densities of each soil component remain unclear in a subarctic agricultural setting. This study aimed to evaluate the ρ s of soils from Southwest Greenland using a three-compartment model (3CM) based on the mixing ratio of SOM derived from loss-on-ignition, mineral particles <20 μm (FC), and mineral particles ≥20 μm (CC). We further evaluated the accuracy of the 3CM against pedotransfer functions (PTFs) and visible near-infrared (vis–NIR) spectroscopic models. A total of 324 soil samples from 16 Greenlandic agricultural fields were investigated, covering a wide range in SOM content (0.021–0.602 kg kg –1 ) and clay content (0.020–0.185 kg kg –1 ). Despite their high SOM content, the Greenlandic soils exhibited relatively high ρ s (1.936–3.044 Mg m –3 ), which together with a large SOM/organic carbon ratio of 2.16 indicated a high SOM density of 1.493 Mg m –3 . The 3CM fit on all soils indicated FC and CC densities of 3.047 and 2.713 Mg m –3 , respectively, while a subset of soils (n = 203) from the same geological setting resulted in FC and CC densities of 2.738 and 2.731 Mg m –3 . Prediction accuracy of the 3CM (RMSE = 0.067 Mg m –3 ) was similar to PTFs (RMSE = 0.068–0.070 Mg m –3 ) and better than vis–NIR spectroscopic models (RMSE = 0.091 Mg m –3 ). Article in Journal/Newspaper Greenland greenlandic Subarctic Aarhus University: Research Greenland Soil Science Society of America Journal 86 4 964 978 |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
The particle density (ρ s ) is a fundamental physical property needed for calculating the soil porosity and phase distributions. While ρ s is often estimated using soil organic matter (SOM) content and particle size distribution, the specific densities of each soil component remain unclear in a subarctic agricultural setting. This study aimed to evaluate the ρ s of soils from Southwest Greenland using a three-compartment model (3CM) based on the mixing ratio of SOM derived from loss-on-ignition, mineral particles <20 μm (FC), and mineral particles ≥20 μm (CC). We further evaluated the accuracy of the 3CM against pedotransfer functions (PTFs) and visible near-infrared (vis–NIR) spectroscopic models. A total of 324 soil samples from 16 Greenlandic agricultural fields were investigated, covering a wide range in SOM content (0.021–0.602 kg kg –1 ) and clay content (0.020–0.185 kg kg –1 ). Despite their high SOM content, the Greenlandic soils exhibited relatively high ρ s (1.936–3.044 Mg m –3 ), which together with a large SOM/organic carbon ratio of 2.16 indicated a high SOM density of 1.493 Mg m –3 . The 3CM fit on all soils indicated FC and CC densities of 3.047 and 2.713 Mg m –3 , respectively, while a subset of soils (n = 203) from the same geological setting resulted in FC and CC densities of 2.738 and 2.731 Mg m –3 . Prediction accuracy of the 3CM (RMSE = 0.067 Mg m –3 ) was similar to PTFs (RMSE = 0.068–0.070 Mg m –3 ) and better than vis–NIR spectroscopic models (RMSE = 0.091 Mg m –3 ). |
format |
Article in Journal/Newspaper |
author |
Weber, Peter Lystbæk Hermansen, Cecilie Nørgaard, Trine Pesch, Charles Moldrup, Per Greve, Mogens H. Arthur, Emmanuel de Jonge, Lis |
spellingShingle |
Weber, Peter Lystbæk Hermansen, Cecilie Nørgaard, Trine Pesch, Charles Moldrup, Per Greve, Mogens H. Arthur, Emmanuel de Jonge, Lis Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy |
author_facet |
Weber, Peter Lystbæk Hermansen, Cecilie Nørgaard, Trine Pesch, Charles Moldrup, Per Greve, Mogens H. Arthur, Emmanuel de Jonge, Lis |
author_sort |
Weber, Peter Lystbæk |
title |
Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy |
title_short |
Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy |
title_full |
Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy |
title_fullStr |
Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy |
title_full_unstemmed |
Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy |
title_sort |
evaluating the particle densities of subarctic soils using pedotransfer functions and vis–nir spectroscopy |
publishDate |
2022 |
url |
https://pure.au.dk/portal/da/publications/evaluating-the-particle-densities-of-subarctic-soils-using-pedotransfer-functions-and-visnir-spectroscopy(2e7b2370-964a-442a-aa96-5047dccc4e4a).html https://doi.org/10.1002/saj2.20410 https://pure.au.dk/ws/files/300475593/Soil_Science_Soc_of_Amer_J_2022_Weber_Evaluating_the_particle_densities_of_subarctic_soils_using_pedotransfer.pdf http://www.scopus.com/inward/record.url?scp=85131520051&partnerID=8YFLogxK |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland greenlandic Subarctic |
genre_facet |
Greenland greenlandic Subarctic |
op_source |
Weber , P L , Hermansen , C , Nørgaard , T , Pesch , C , Moldrup , P , Greve , M H , Arthur , E & de Jonge , L 2022 , ' Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy ' , Soil Science Society of America Journal , vol. 86 , no. 4 , pp. 964-978 . https://doi.org/10.1002/saj2.20410 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/saj2.20410 |
container_title |
Soil Science Society of America Journal |
container_volume |
86 |
container_issue |
4 |
container_start_page |
964 |
op_container_end_page |
978 |
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1766019540433502208 |