Benefits of Water-Harvesting Systems (Jessour) on Soil Water Retention in Southeast Tunisia

Détails

Ressource 1Télécharger: 2020_Calianno_et_al_Water.pdf (9476.55 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_86D370D1B5B1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Benefits of Water-Harvesting Systems (Jessour) on Soil Water Retention in Southeast Tunisia
Périodique
Water
Auteur(s)
Calianno Martin, Fallot Jean-Michel, Ben Fraj Tarek, Ben Ouezdou Hédi, Reynard Emmanuel, Milano Marianne, Abbassi Mohamed, Ghram Messedi Aziza, Adatte Thierry
ISSN
2073-4441
Statut éditorial
Publié
Date de publication
19/01/2020
Peer-reviewed
Oui
Volume
12
Numéro
1
Pages
295
Langue
anglais
Résumé
In this paper, we quantify the water balance of Jessour at the scale of agricultural plots. Jessour (plural of Jesr) are ancestral hydro-agricultural systems in the Dahar plateau (southeastern Tunisia). They consist of small dams built across wadis and gullies, which retain rainwater and sediments, hence enabling cropping. Despite arid climate conditions, Jessour allow the culture of the olive tree beyond its ecological limits. Weather monitoring stations were set up and soil moisture sensors installed down to a depth of 1.25 m in the soil in two neighboring gullies in the village of Zammour: one with a Jesr and one without. Laser granulometry and organic matter analyses were carried out on samples collected near the soil moisture sensors. Measurements were recorded from 28 September 2017 to 21 September 2018. From 10 to 12 November 2017, the region received 123.3 mm rainfall. The Jesr retained the equivalent of 410.3 mm of soil moisture to a depth of 1.25 m whereas the value in the gully was 224.6 mm. Throughout the summer of 2018, the soil available water capacity (AWC) remained above 55 mm in the Jesr, while it dropped to zero in the gully. Jessour are thus very suitable hydro-agricultural systems to face the climate changes concerning this fragile region, located in the transition zone between the semi-arid to arid Mediterranean region and the Sahara.
Mots-clé
Geography, Planning and Development, Aquatic Science, Biochemistry, Water Science and Technology
Open Access
Oui
Création de la notice
22/01/2020 20:21
Dernière modification de la notice
13/02/2020 8:09
Données d'usage