| Titre : | Modelling crop water demand under climate change: the case of Sardinia region (2025) |
| Auteurs : | M.F. Aslam ; S. Masia ; D. Spano ; V. Mereu ; M. Debolini ; R.L. Snyder ; A. Borgo ; A. Trabucco |
| Type de document : | Article |
| Dans : | Irrigation Science (vol. 43, n. 6, November 2025) |
| Article en page(s) : | p. 1681-1698 |
| Langues : | Anglais |
| Langues du résumé : | Anglais |
| Catégories : |
Catégories principales 07 - ENVIRONNEMENT ; 7.3 - Eau. Gestion de l'EauThésaurus IAMM CULTURE IRRIGUEE ; GESTION DES EAUX ; BESOIN EN EAU ; MODELE ; SARDEGNA ; ITALIE |
| Résumé : | Water scarcity is one of the foremost concerns for the agricultural sector due to limited water resources, increasing water demand, and climate change. Currently, the agricultural sector accounts for 70% of global freshwater withdrawals, and an increase in freshwater withdrawals and use for irrigation is already expected by 2050. In this study, the impact of climate change on crop water demands, and yield losses due to water shortage, were assessed using the Simulation of Evapotranspiration of Applied Water model. This crop-soil?water model was implemented in a typical Mediterranean environment (Sardinia, Italy) across a full range of relevant crops (wheat, barley, sugar beet, potato, lentil, almond, maize, wine grape, table grape, tomato, artichoke, alfalfa, olive, irrigated pasture, and orange). The simulations were driven by climate data from five earth system models dynamically downscaled at 11 km with regional climate models and available from EURO-CORDEX for baseline (1976?2005) and future (2036?2065) climate conditions under RCP2.6, RCP4.5 and RCP8.5 scenarios. Results show that wheat and barley will foresee the most significant increase in water demand of 12%, 13%, and 14% under RCP2.6, RCP4.5 and RCP8.5, respectively, based on the ensemble mean of the climate models. Water demand for almond, maize, wine grape, and pasture were projected to increase by about 5%, 7%, and 4% under RCP2.6, RCP4.5, and RCP8.5, respectively. The increasing crop water demand represents a considerable challenge for water resource management, especially considering the shortage of water supplies and increasing competition with other sectors. This work provides a wide climate risk evaluation across most relevant crops in the Mediterranean environment to support policymakers in developing adaptation strategies and sustainable regional plans, to support food and water securities. |
| Cote : | En ligne |
| URL / DOI : | https://doi.org/10.1007/s00271-025-01027-8 |
Accueil
Sélection de la langue
Adresse
ÉQUIPE
Nous contacter
Informations pratiques
contact
