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Leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation
Laboratory soil incubations provide controlled conditions to investigate carbon and nutrient dynamics; however, they are not free of artefacts. As carbon and nitrogen cycles are tightly linked, we aimed at investigating whether the incubation-induced accumulation of mineral nitrogen (N(min)) biases...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5381879/ https://www.ncbi.nlm.nih.gov/pubmed/28380005 http://dx.doi.org/10.1371/journal.pone.0174725 |
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author | González-Domínguez, Beatriz Studer, Mirjam S. Hagedorn, Frank Niklaus, Pascal A. Abiven, Samuel |
author_facet | González-Domínguez, Beatriz Studer, Mirjam S. Hagedorn, Frank Niklaus, Pascal A. Abiven, Samuel |
author_sort | González-Domínguez, Beatriz |
collection | PubMed |
description | Laboratory soil incubations provide controlled conditions to investigate carbon and nutrient dynamics; however, they are not free of artefacts. As carbon and nitrogen cycles are tightly linked, we aimed at investigating whether the incubation-induced accumulation of mineral nitrogen (N(min)) biases soil organic carbon (SOC) mineralisation. For this, we selected two soils representative of the C:N ratio values found in European temperate forests, and applied two incubation systems: ‘closed’ beakers and ‘open’ microlysimeters. The latter allowed leaching the soil samples during the incubation. By the end of the 121-day experiment, the low C:N soil significantly accumulated more N(min) in beakers (5.12 g kg(-1) OC) than in microlysimeters (3.00 g kg(-1) OC) but there was not a significant difference in SOC mineralisation at any point of the experiment. On the other hand, N(min) did not accumulate in the high C:N soil but, by the end of the experiment, leaching had promoted 33.9% more SOC solubilisation than beakers. Therefore, we did not find evidence that incubation experiments introduce a bias on SOC mineralisation. This outcome strengthens results from soil incubation studies. |
format | Online Article Text |
id | pubmed-5381879 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-53818792017-04-19 Leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation González-Domínguez, Beatriz Studer, Mirjam S. Hagedorn, Frank Niklaus, Pascal A. Abiven, Samuel PLoS One Research Article Laboratory soil incubations provide controlled conditions to investigate carbon and nutrient dynamics; however, they are not free of artefacts. As carbon and nitrogen cycles are tightly linked, we aimed at investigating whether the incubation-induced accumulation of mineral nitrogen (N(min)) biases soil organic carbon (SOC) mineralisation. For this, we selected two soils representative of the C:N ratio values found in European temperate forests, and applied two incubation systems: ‘closed’ beakers and ‘open’ microlysimeters. The latter allowed leaching the soil samples during the incubation. By the end of the 121-day experiment, the low C:N soil significantly accumulated more N(min) in beakers (5.12 g kg(-1) OC) than in microlysimeters (3.00 g kg(-1) OC) but there was not a significant difference in SOC mineralisation at any point of the experiment. On the other hand, N(min) did not accumulate in the high C:N soil but, by the end of the experiment, leaching had promoted 33.9% more SOC solubilisation than beakers. Therefore, we did not find evidence that incubation experiments introduce a bias on SOC mineralisation. This outcome strengthens results from soil incubation studies. Public Library of Science 2017-04-05 /pmc/articles/PMC5381879/ /pubmed/28380005 http://dx.doi.org/10.1371/journal.pone.0174725 Text en © 2017 González-Domínguez et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article González-Domínguez, Beatriz Studer, Mirjam S. Hagedorn, Frank Niklaus, Pascal A. Abiven, Samuel Leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation |
title | Leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation |
title_full | Leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation |
title_fullStr | Leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation |
title_full_unstemmed | Leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation |
title_short | Leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation |
title_sort | leaching of soils during laboratory incubations does not affect soil organic carbon mineralisation but solubilisation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5381879/ https://www.ncbi.nlm.nih.gov/pubmed/28380005 http://dx.doi.org/10.1371/journal.pone.0174725 |
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