Fleskens L., Stroosnijder L., Ouessar M., De Graaff J. (2005). Evaluation of the on-site impact of water harvesting in southern Tunisia. Journal of Arid Environments, 01/09/2005, vol. 62, n. 4, p. 613-630.
https://doi.org/10.1016/j.jaridenv.2005.01.013
https://doi.org/10.1016/j.jaridenv.2005.01.013
Titre : | Evaluation of the on-site impact of water harvesting in southern Tunisia (2005) |
Auteurs : | L. Fleskens ; L. Stroosnijder ; M. Ouessar ; J. De Graaff |
Type de document : | Article |
Dans : | Journal of Arid Environments (vol. 62, n. 4, September 2005) |
Article en page(s) : | p. 613-630 |
Langues : | Anglais |
Langues du résumé : | Anglais |
Catégories : |
Catégories principales 06 - AGRICULTURE. FORÊTS. PÊCHES ; 6.6 - Technique Agricole (sols, engrais, mécanisation)Thésaurus IAMM EAU DE PLUIE ; EAU DE RUISSELLEMENT ; EVALUATION ECONOMIQUE ; OLEA EUROPAEA ; ZONE ARIDE ; SUD ; TUNISIE |
Résumé : | Water harvesting techniques (WHT) play an important role in water resources conservation in (semi-) arid environments. However, the impacts of WHT are not clearly understood. This paper presents a method to measure increased water availability to olive (Olea europeae) trees grown on the terraced area of a traditional WHT site in southern Tunisia (jessr) and to translate these measurements into effects on yield. Although the WHT were shown to greatly enhance possibilities for olive growing, yields remain dependent on water supply (rainfall+run-on) in spring. Critical factors in the method described are the maximum available soil water capacity (ASWmax), crop and yield response factors (kc, kyveg and kyfruit) and the yield consistency index (YCI). Detailed accounts are presented for the costs and benefits of jessr construction and olive production, and the WHT are evaluated using cost-benefit analysis. Difficulties and assumptions are discussed and it is concluded that on-site effects alone might not justify investing in the construction of WHT. |
Cote : | Réservé lecteur CIHEAM |
URL / DOI : | https://doi.org/10.1016/j.jaridenv.2005.01.013 |