Soil–air phase characteristics: Response to texture, density, and land use in Greenland and Denmark
Abstract Soil aeration is a key parameter for sustainable and productive agriculture. The intensification of agricultural activity in Greenland involves land use (LU) and LU change, affecting the soil–air phase. The combined effects of natural compaction (bulk density, ρ b ), texture (texture unifor...
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crwiley:10.1002/saj2.20284 2024-06-02T08:07:22+00:00 Soil–air phase characteristics: Response to texture, density, and land use in Greenland and Denmark Pesch, Charles Weber, Peter Lystbæk de Jonge, Lis Wollesen Greve, Mogens Humlekrog Norgaard, Trine Moldrup, Per Teknologi og Produktion, Det Frie Forskningsråd 2021 http://dx.doi.org/10.1002/saj2.20284 https://onlinelibrary.wiley.com/doi/pdf/10.1002/saj2.20284 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/saj2.20284 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Soil Science Society of America Journal volume 85, issue 5, page 1534-1554 ISSN 0361-5995 1435-0661 journal-article 2021 crwiley https://doi.org/10.1002/saj2.20284 2024-05-03T11:26:03Z Abstract Soil aeration is a key parameter for sustainable and productive agriculture. The intensification of agricultural activity in Greenland involves land use (LU) and LU change, affecting the soil–air phase. The combined effects of natural compaction (bulk density, ρ b ), texture (texture uniformity index; TUI), and LU on the soil–air phase of subarctic soils are not well known. This study aims to identify and compare the main drivers for air‐filled porosity (ε) and soil‐structure changes within and across sites in Greenland and Denmark. We analyzed comprehensive data sets of ε, relative gas diffusivity D p / D o ), and air‐permeability ( k a ) measured on intact soil samples from South Greenland (pasture) and Denmark (cultivated, urban, and forest). The mechanical robustness of the air phase was evaluated by linear models of ε as a function of ρ b ( H ‐model). The ratio of k a to D p / D o served as a soil‐structure index (Ω); the latter significantly correlated to TUI. The Greenlandic pasture soils did not show signs of well‐developed soil structure (low Ω‐values), whereas low H ‐values suggested the soils were mechanically robust compared to similar‐textured cultivated soils. The soil–air characteristic curve (ε vs. pF) was parameterized, and the moisture control parameter was accurately predicted by TUI and LU ( R 2 = .95). Overall, the ρ b was found to control the air‐phase functions within a field. However, considering changes in ε‐levels across different fields, texture, LU, and other environmental factors became statistically more relevant than ρ b . A modeled response surface for changes in ε with soil conditions may, in perspective, be useful for better‐predicting gas transport in soil, both within and across fields. Article in Journal/Newspaper Greenland greenlandic Subarctic Wiley Online Library Greenland Soil Science Society of America Journal |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Soil aeration is a key parameter for sustainable and productive agriculture. The intensification of agricultural activity in Greenland involves land use (LU) and LU change, affecting the soil–air phase. The combined effects of natural compaction (bulk density, ρ b ), texture (texture uniformity index; TUI), and LU on the soil–air phase of subarctic soils are not well known. This study aims to identify and compare the main drivers for air‐filled porosity (ε) and soil‐structure changes within and across sites in Greenland and Denmark. We analyzed comprehensive data sets of ε, relative gas diffusivity D p / D o ), and air‐permeability ( k a ) measured on intact soil samples from South Greenland (pasture) and Denmark (cultivated, urban, and forest). The mechanical robustness of the air phase was evaluated by linear models of ε as a function of ρ b ( H ‐model). The ratio of k a to D p / D o served as a soil‐structure index (Ω); the latter significantly correlated to TUI. The Greenlandic pasture soils did not show signs of well‐developed soil structure (low Ω‐values), whereas low H ‐values suggested the soils were mechanically robust compared to similar‐textured cultivated soils. The soil–air characteristic curve (ε vs. pF) was parameterized, and the moisture control parameter was accurately predicted by TUI and LU ( R 2 = .95). Overall, the ρ b was found to control the air‐phase functions within a field. However, considering changes in ε‐levels across different fields, texture, LU, and other environmental factors became statistically more relevant than ρ b . A modeled response surface for changes in ε with soil conditions may, in perspective, be useful for better‐predicting gas transport in soil, both within and across fields. |
author2 |
Teknologi og Produktion, Det Frie Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Pesch, Charles Weber, Peter Lystbæk de Jonge, Lis Wollesen Greve, Mogens Humlekrog Norgaard, Trine Moldrup, Per |
spellingShingle |
Pesch, Charles Weber, Peter Lystbæk de Jonge, Lis Wollesen Greve, Mogens Humlekrog Norgaard, Trine Moldrup, Per Soil–air phase characteristics: Response to texture, density, and land use in Greenland and Denmark |
author_facet |
Pesch, Charles Weber, Peter Lystbæk de Jonge, Lis Wollesen Greve, Mogens Humlekrog Norgaard, Trine Moldrup, Per |
author_sort |
Pesch, Charles |
title |
Soil–air phase characteristics: Response to texture, density, and land use in Greenland and Denmark |
title_short |
Soil–air phase characteristics: Response to texture, density, and land use in Greenland and Denmark |
title_full |
Soil–air phase characteristics: Response to texture, density, and land use in Greenland and Denmark |
title_fullStr |
Soil–air phase characteristics: Response to texture, density, and land use in Greenland and Denmark |
title_full_unstemmed |
Soil–air phase characteristics: Response to texture, density, and land use in Greenland and Denmark |
title_sort |
soil–air phase characteristics: response to texture, density, and land use in greenland and denmark |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/saj2.20284 https://onlinelibrary.wiley.com/doi/pdf/10.1002/saj2.20284 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/saj2.20284 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland greenlandic Subarctic |
genre_facet |
Greenland greenlandic Subarctic |
op_source |
Soil Science Society of America Journal volume 85, issue 5, page 1534-1554 ISSN 0361-5995 1435-0661 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/saj2.20284 |
container_title |
Soil Science Society of America Journal |
_version_ |
1800752437047328768 |