A marginal abatement cost curve for greenhouse gases attenuation by additional carbon storage in french agricultural land

Bamiere Laure, Bellassen Valentin, Angers Denis, Cardinael Rémi, Ceschia Eric, Chenu Claire, Constantin Julie, Delame Nathalie, Diallo A., Graux Anne-Isabelle, Houot Sabine, Klumpp Katja, Launay Camille, Letort Elodie, Martin Raphael, Meziere Delphine, Mosnier Claire, Réchauchère Olivier, Schiavo Michele, Thérond Olivier, Pellerin Sylvain. 2023. A marginal abatement cost curve for greenhouse gases attenuation by additional carbon storage in french agricultural land. Journal of Cleaner Production, 383:135423, 21 p.

https://doi.org/10.1016/j.jclepro.2022.135423

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Résumé : Following the Paris agreement in 2015, the European Union (EU) set a carbon neutrality objective by 2050, and so did France. The French agricultural sector can contribute as a carbon sink through carbon storage in biomass and soil, in addition to reducing GHG emissions. The objective of this study is to quantitatively assess the additional storage potential and cost of a set of eight carbon-storing practices. The impacts of these agricultural practices on soil organic carbon storage and crop production are assessed at a very fine spatial scale, using crop and grassland models. The associated area base, GHG budget, and implementation costs are assessed and aggregated at the region level. The economic model BANCO uses this information to derive the marginal abatement cost curve for France and identify the combination of carbon storing practices that minimizes the total cost of achieving a given national net GHG mitigation target. We find that a substantial amount of carbon, 36.2 to 52.9 MtCO2e yr−1, can be stored in soil and biomass for reasonable carbon prices of 55 and 250 € tCO2e−1, respectively (corresponding to current and 2030 French carbon value for climate action), mainly by developing agroforestry and hedges, generalising cover crops, and introducing or extending temporary grasslands in crop sequences. This finding questions the 3–5 times lower target of 10 MtCO2e.yr−1 retained for the agricultural carbon sink by the French climate neutrality strategy. Overall, this would decrease total French GHG emissions by 9.2–13.8%, respectively (reference year 2019).

Mots-clés Agrovoc : séquestration du carbone, carbone organique du sol, réduction des émissions, gaz à effet de serre, émission de gaz, atténuation des effets du changement climatique, terre agricole, coût marginal

Mots-clés géographiques Agrovoc : France

Mots-clés libres : Carbon sequestration, Agroforestry, Cover crops, STICS, Climate change mitigation

Classification Agris : P40 - Météorologie et climatologie
F08 - Systèmes et modes de culture
P33 - Chimie et physique du sol

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

Agences de financement européennes : European Commission

Programme de financement européen : H2020

Projets sur financement : (EU) Towards climate-smart sustainable management of agricultural soils

Auteurs et affiliations