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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| Format: | Article |
| Language: | English |
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Nature Portfolio
2019-12-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-019-56694-3 |
| _version_ | 1818852868301520896 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-19T07:27:45Z |
| format | Article |
| id | doaj.art-43325c02008748e3b110e68fc0fc1404 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T07:27:45Z |
| publishDate | 2019-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-43325c02008748e3b110e68fc0fc14042022-12-21T20:30:48ZengNature PortfolioScientific Reports2045-23222019-12-019111110.1038/s41598-019-56694-3Management of soil pH promotes nitrous oxide reduction and thus mitigates soil emissions of this greenhouse gasCatherine Hénault0Hocine Bourennane1Adeline Ayzac2Céline Ratié3Nicolas P. A. Saby4Jean-Pierre Cohan5Thomas Eglin6Cécile Le Gall7Agroécologie, AgroSup Dijon, INRAE, Univ. Bourgogne Franche-ComtéURSOLS, INRAEURSOLS, INRAEInfosol, US1106, INRAEInfosol, US1106, INRAEARVALIS- Institut du Végétal Route de Châteaufort – RD 36 – ZA des GraviersADEME, Direction Bioéconomie et Energies Renouvelables, Service Forêts, Alimentation et BioéconomieTERRES INOVIA, Avenue Lucien BrétignièresAbstract 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.https://doi.org/10.1038/s41598-019-56694-3 |
| spellingShingle | 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 Scientific Reports |
| title | 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_short | 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 |
| url | https://doi.org/10.1038/s41598-019-56694-3 |
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