Unravelling land-use change mechanisms at global and regional scales

Brunelle Thierry, Dumas Patrice, Ben Aoun W., Gabrielle Benoît. 2018. Unravelling land-use change mechanisms at global and regional scales. BioPhysical Economics and Resource Quality, 3:13, 25 p.

Url - jeu de données - Entrepôt autre : https://poseidon.centre-cired.fr/data_process-based-decomposition-paper/

Résumé : Unravelling the dynamics of land-use change is key to assess the environmental and socioeconomic impacts of land-based strategies regarding climate or energy. In this prospect, this paper proposes an analytical decomposition of land-use change resulting from a shock in agricultural demand which takes into account indirect effects from price signals. This analytical equation is numerically estimated using a global model of land-use combining biophysics and economics. While being relatively simple, this model captures the main processes of land-use change: change in the intensive and extensive margins, international trade, change in intermediary demand and possible by-products. At the global scale, our results show that yield losses due to the conversion of marginal land amount approximately to half of yield gains due to fertiliser use. At the regional scale, patterns of yield and area responses are depicted by assessing the potentials for intensification (yield gaps) and extensification (areas of extensive pastures) given the future pathways of agricultural demand.

Mots-clés Agrovoc : utilisation des terres, développement durable, agriculture intensive, rendement des cultures, analyse économique, moyen de production agricole, coût de production, énergie, climat, modèle mathématique

Mots-clés géographiques Agrovoc : Canada, États-Unis d'Amérique, Amérique latine, Brésil, Europe, Proche-Orient, Afrique, URSS, Inde, Chine, Asie, Australie, Nouvelle-Zélande, Japon, République de Corée

Mots-clés complémentaires : Développement territorial

Mots-clés libres : Land use change, Biophysical economics, Energy transition

Classification Agris : A01 - Agriculture - Considérations générales
E11 - Économie et politique foncières
P05 - Ressources énergétiques et leur gestion
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

• Brunelle Thierry, CIRAD-ES-UMR CIRED (FRA) ORCID: 0000-0001-5350-8332 - auteur correspondant
• Dumas Patrice, CIRAD-ES-UMR CIRED (FRA) ORCID: 0000-0002-3896-7589
• Ben Aoun W., INRA (FRA)
• Gabrielle Benoît, INRA (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/588685/)

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