Malpede M., Percoco M. (2023). Aridification, precipitations and crop productivity: evidence from the aridity index. European review of agricultural economics, 01/07/2023, vol. 50, n. 3, 978-1012.
https://doi.org/10.1093/erae/jbad006
https://doi.org/10.1093/erae/jbad006
Titre : | Aridification, precipitations and crop productivity: evidence from the aridity index (2023) |
Auteurs : | M. Malpede ; M. Percoco |
Type de document : | Article |
Dans : | European review of agricultural economics (vol. 50, n. 3, July 2023) |
Article en page(s) : | 978-1012 |
Langues : | Anglais |
Catégories : |
Catégories principales 07 - ENVIRONNEMENT ; 7.5 - Dégradation : Impact, DésertificationThésaurus IAMM DESERTIFICATION ; SECHERESSE ; CHANGEMENT CLIMATIQUE ; EAU DISPONIBLE ; PRODUCTIVITE ; AGRICULTURE ; RENDEMENT DES CULTURES ; ZONE ARIDE ; LUTTE CONTRE LA DESERTIFICATION |
Résumé : | The economic effects of global warming have gained considerable attention in the recent economic literature. While the relationship between rainfall and agriculture is well known, precipitations alone do not capture the soil water availability, which depends on the evaporation of the water (potential evapotranspiration [PET]). This paper presents evidence of the relationship between aridification and agricultural productivity. We show that areas that have experienced increased precipitations have become arider due to increased PET. We then project future aridification patterns. We find that the global arid area will increase by 3.9 per cent by 2040. This implies a global loss of about 20 million tons of maize, 19 million tons of rice, 8 million tons of soybeans and 21 million tons of wheat until 2040 if no action to combat desertification is taken. |
Cote : | Réservé lecteur CIHEAM |
URL / DOI : | https://doi.org/10.1093/erae/jbad006 |