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Energy cover crops for biogas production increase soil organic carbon stocks: a modeling approach

hal.structure.identifierEcologie fonctionnelle et écotoxicologie des agroécosystèmes [ECOSYS]
dc.contributor.authorLEVAVASSEUR, Florent
hal.structure.identifierAgroécologie et intensification durables des cultures annuelles [UPR AIDA]
hal.structure.identifierDépartement Performances des systèmes de production et de transformation tropicaux [Cirad-PERSYST]
dc.contributor.authorKOUAKOU, Patrice
hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
dc.contributor.authorCONSTANTIN, Julie
hal.structure.identifierINRAE Transfert Environnement [Narbonne]
dc.contributor.authorCRESSON, Romain
hal.structure.identifierAgrosystèmes et impacts environnementaux carbone-azote [Agro-Impact]
hal.structure.identifierBioEcoAgro - UMR transfrontalière INRAe - UMRT1158
dc.contributor.authorFERCHAUD, Fabien
hal.structure.identifierOptimisation des procédés en Agriculture, Agroalimentaire et Environnement [UR OPAALE]
dc.contributor.authorGIRAULT, Romain
hal.structure.identifierGaz Réseau Distribution France [GRDF]
dc.contributor.authorJEAN-BAPTISTE, Vincent
hal.structure.identifierARVALIS - Institut du végétal [Paris]
dc.contributor.authorLAGRANGE, Hélène
hal.structure.identifierARVALIS - Institut du végétal [Paris]
dc.contributor.authorMARSAC, Sylvain
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorPELLERIN, Sylvain
hal.structure.identifierEcologie fonctionnelle et écotoxicologie des agroécosystèmes [ECOSYS]
dc.contributor.authorHOUOT, Sabine
dc.date.accessioned2024-04-08T11:44:44Z
dc.date.available2024-04-08T11:44:44Z
dc.date.issued2023
dc.identifier.issn1757-1693
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195166
dc.description.abstractEnEnergy cover crops for biogas production through anaerobic digestion (AD) are inserted between two primary crops. They replace either bare soil or non-harvested cover crops, and their management is usually intensified to produce more biomass. They allow the production of renewable energy as well as diges-tate, used as an organic fertilizer, without directly competing with food produc-tion. Because of the increased biomass production and export and of the return of a digested biomass to the soil, the impact of energy cover crops on soil organic carbon (SOC) is questioned. The objective of this paper was to study the differ-ence in SOC stocks induced by the introduction of energy cover crops for AD coupled with the application of the resulting amount of digestate. We used the AD model Sys- Metha combined with the soil C model AMG to simulate SOC stocks for 13 case studies in France, with scenarios comparing different inter-crop management practices, with or without cover crops, harvested or not. Our results indicated that the higher biomass production of energy cover crops (from 6.7 to 11.1 t DM ha−1) in comparison with nonharvested cover crops (2 t DM ha−1) or bare soil led to higher humified C input (belowground input and digestate), despite the high C fraction exported in AD. This resulted in an increase in SOC stocks in comparison with nonharvested cover crops or bare soil (from 0.01 to 0.12 t C ha−1 year−1 over 30 years). The uncertainties in the model parameters did not modify these results. However, in the case of equal biomass production be-tween energy cover crops and nonharvested cover crops, SOC stocks would be lower with energy cover crops.
dc.language.isoen
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enAMG
dc.subject.enanaerobic digestion
dc.subject.enarable crops
dc.subject.enbiogas
dc.subject.encover crop
dc.subject.enFrance
dc.subject.enmodeling
dc.subject.enSOC
dc.subject.enSys- Metha
dc.title.enEnergy cover crops for biogas production increase soil organic carbon stocks: a modeling approach
dc.typeArticle de revue
dc.identifier.doi10.1111/gcbb.13018
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
bordeaux.journalGlobal Change Biology - Bioenergy
bordeaux.page224-238
bordeaux.volume15
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue2
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03876320
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03876320v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Global%20Change%20Biology%20-%20Bioenergy&rft.date=2023&rft.volume=15&rft.issue=2&rft.spage=224-238&rft.epage=224-238&rft.eissn=1757-1693&rft.issn=1757-1693&rft.au=LEVAVASSEUR,%20Florent&KOUAKOU,%20Patrice&CONSTANTIN,%20Julie&CRESSON,%20Romain&FERCHAUD,%20Fabien&rft.genre=article


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