García-Palacios P., Alarcón M.R., Tenorio J.L., Moreno S.S. (2019). Ecological intensification of agriculture in drylands. Journal of Arid Environments, 01/08/2019, vol. 167, p. 101-105.
https://doi.org/10.1016/j.jaridenv.2019.04.014
https://doi.org/10.1016/j.jaridenv.2019.04.014
Titre : | Ecological intensification of agriculture in drylands (2019) |
Auteurs : | P. García-Palacios ; M.R. Alarcón ; J.L. Tenorio ; S.S. Moreno |
Type de document : | Article |
Dans : | Journal of Arid Environments (vol. 167, August 2019) |
Article en page(s) : | p. 101-105 |
Langues : | Anglais |
Langues du résumé : | Anglais |
Catégories : |
Catégories principales 6.4 - Production Agricole. Système de Production ; 06 - AGRICULTURE. FORÊTS. PÊCHESThésaurus IAMM AGRICULTURE ECOLOGIQUEMENT INTENSIVE ; AGRICULTURE DE CONSERVATION ; CULTURE EN MELANGE ; DURABILITE ; ZONE ARIDE ; CHANGEMENT CLIMATIQUE ; MULTIFONCTIONNALITE DE L'AGRICULTURE ; SERVICE ECOSYSTEMIQUE ; RENDEMENT DES CULTURES |
Résumé : | Drylands, which represent the world largest biome and support approximately 38% of the global human population, offer harsh climate and poor soil for agriculture. These environmental conditions are expected to get even harsher with climate change, challenging the potential to close the yield gap in these areas. In this short review, we focus on ecological intensification, which aims to replace external agricultural inputs (e.g. inorganic fertilizer) with farming practices optimizing ecosystem services beneficial for crop yield. We first highlight important management goals for dryland agriculture sustainability, then identify two practices of ecological intensification (conservation agriculture and intercropping) that can help to meet such goals, and finally propose guidelines for future research. The temporal stability of crop yield and its nutritional diversity, besides total yield, are key components of crop production in dryland agriculture. Conservation agriculture and intercropping seem adequate to foster crop yield in drylands, via increased soil carbon accumulation, water and nitrogen retention, if they are adapted to the particular climatic and socioeconomic conditions found in these areas. Yield stability is not affected by conservation agriculture, and there are not enough studies conducted in drylands to evaluate the stabilizing role of intercropping. To move this field forward in dryland areas, we propose multifunctional approaches integrating trade-offs between crop yield and ecosystem services, long-term studies addressing the independent contribution of the different conservation agriculture components, and identification of crop mixtures with an optimal distribution of plant functional traits. |
Cote : | Réservé lecteur CIHEAM |
URL / DOI : | https://doi.org/10.1016/j.jaridenv.2019.04.014 |