Suitability of operational N direct field emissions models to represent contrasting agricultural situations in agricultural LCA: Review and prospectus

Avadi Tapia Angel Daniel, Galland Victor, Versini Antoine, Bockstaller Christian. 2022. Suitability of operational N direct field emissions models to represent contrasting agricultural situations in agricultural LCA: Review and prospectus. Science of the Total Environment, 802:149960, 16 p.

Résumé : N biogeochemical flows and associated N losses exceed currently planetary boundaries and represent a major threat for sustainability. Measuring N losses is a resource-intensive endeavour, and not suitable for ex-ante assessments, thus modelling is a common approach for estimating N losses associated with agricultural scenarios (systems, practices, situations). The aim of this study is to review some of the N models commonly used for estimating direct field emissions of agricultural systems, and to assess their suitability to systems featuring contrasted agricultural and pedoclimatic conditions. Simple N models were chosen based on their frequent use in LCA, including ecoinvent v3, Indigo-N v1/v2, AGRIBALYSE v1.2/v1.3, and the Mineral fertiliser equivalents (MFE) calculator. Model sets were contrasted, among them and with the dynamic crop model STICS, regarding their consideration of the biophysical processes determining N losses to the environment from agriculture, namely plant uptake, nitrification, denitrification, NH3 volatilisation, NO3 leaching, erosion and run-off, and N2O emission to air; using four reference agricultural datasets. Models' consideration of management drivers such as crop rotations and the allocation of fertilisers and emissions among crops in a crop rotation, over-fertilisation and fertilisation technique, were also contrasted, as well as their management of the mineralisation of soil organic matter and organic fertilisers, and of drainage regimes.

Mots-clés Agrovoc : cycle de l'azote, impact sur l'environnement, analyse du cycle de vie, modélisation des cultures, vinasse

Mots-clés géographiques Agrovoc : Sénégal, France

Mots-clés libres : Agriculture, Fertilisation, Field emissions, Nitrogen, Organic, Tropical

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Agences de financement hors UE : Agence de l'Environnement et de la Maîtrise de l'Energie

Projets sur financement : (FRA) AGRIBALYSE

Auteurs et affiliations

• Avadi Tapia Angel Daniel, CIRAD-PERSYST-UPR Recyclage et risque (CIV) ORCID: 0000-0002-8114-916X - auteur correspondant
• Galland Victor, INRAE (FRA)
• Versini Antoine, CIRAD-PERSYST-UPR Recyclage et risque (REU) ORCID: 0000-0002-5119-0567
• Bockstaller Christian, INRAE (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/603961/)

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