Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas

Abstract While concerns about human-induced effects on the Earth’s climate have mainly concentrated on carbon dioxide (CO2) and methane (CH4), reducing anthropogenic nitrous oxide (N2O) flux, mainly of agricultural origin, also represents an opportunity for substantial mitigation. To develop a solut...

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Autores principales:	Catherine Hénault, Hocine Bourennane, Adeline Ayzac, Céline Ratié, Nicolas P. A. Saby, Jean-Pierre Cohan, Thomas Eglin, Cécile Le Gall
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/43325c02008748e3b110e68fc0fc1404
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spelling	oai:doaj.org-article:43325c02008748e3b110e68fc0fc14042021-12-02T13:34:54ZManagement of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas10.1038/s41598-019-56694-32045-2322https://doaj.org/article/43325c02008748e3b110e68fc0fc14042019-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-56694-3https://doaj.org/toc/2045-2322Abstract While concerns about human-induced effects on the Earth’s climate have mainly concentrated on carbon dioxide (CO2) and methane (CH4), reducing anthropogenic nitrous oxide (N2O) flux, mainly of agricultural origin, also represents an opportunity for substantial mitigation. To develop a solution that induces neither the transfer of nitrogen pollution nor decreases agricultural production, we specifically investigated the last step of the denitrification pathway, the N2O reduction path, in soils. We first observed that this path is mainly driven by soil pH and is progressively inhibited when pH is lower than 6.8. During field experiments, we observed that liming acidic soils to neutrality made N2O reduction more efficient and decreased soil N2O emissions. As we estimated acidic fertilized soils to represent 37% [27–50%] of French soils, we calculated that liming could potentially decrease France’s total N2O emissions by 15.7% [8.3–21.2%]. Nevertheless, due to the different possible other impacts of liming, we currently recommend that the deployment of this solution to mitigate N2O emission should be based on local studies that take into account agronomic, environmental and economic aspects.Catherine HénaultHocine BourennaneAdeline AyzacCéline RatiéNicolas P. A. SabyJean-Pierre CohanThomas EglinCécile Le GallNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Catherine Hénault Hocine Bourennane Adeline Ayzac Céline Ratié Nicolas P. A. Saby Jean-Pierre Cohan Thomas Eglin Cécile Le Gall Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas
description	Abstract While concerns about human-induced effects on the Earth’s climate have mainly concentrated on carbon dioxide (CO2) and methane (CH4), reducing anthropogenic nitrous oxide (N2O) flux, mainly of agricultural origin, also represents an opportunity for substantial mitigation. To develop a solution that induces neither the transfer of nitrogen pollution nor decreases agricultural production, we specifically investigated the last step of the denitrification pathway, the N2O reduction path, in soils. We first observed that this path is mainly driven by soil pH and is progressively inhibited when pH is lower than 6.8. During field experiments, we observed that liming acidic soils to neutrality made N2O reduction more efficient and decreased soil N2O emissions. As we estimated acidic fertilized soils to represent 37% [27–50%] of French soils, we calculated that liming could potentially decrease France’s total N2O emissions by 15.7% [8.3–21.2%]. Nevertheless, due to the different possible other impacts of liming, we currently recommend that the deployment of this solution to mitigate N2O emission should be based on local studies that take into account agronomic, environmental and economic aspects.
format	article
author	Catherine Hénault Hocine Bourennane Adeline Ayzac Céline Ratié Nicolas P. A. Saby Jean-Pierre Cohan Thomas Eglin Cécile Le Gall
author_facet	Catherine Hénault Hocine Bourennane Adeline Ayzac Céline Ratié Nicolas P. A. Saby Jean-Pierre Cohan Thomas Eglin Cécile Le Gall
author_sort	Catherine Hénault
title	Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas
title_short	Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas
title_full	Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas
title_fullStr	Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas
title_full_unstemmed	Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas
title_sort	management of soil ph promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/43325c02008748e3b110e68fc0fc1404
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Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gas

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