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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Parameterization of the Effect of Bench Terraces on Runoff and Sediment Yield by Swat Modeling in a Small Semi-arid Watershed in Northern Tunisia
Land Degradation and Development, Volume 28, No. 5, Year 2017
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Description
In Tunisia, soil and water conservation interventions are among the most practicable strategies to prevent and mitigate rainwater losses through surface runoff and consequential erosion of fertile soils. In this study, a small and terraced agricultural catchment (Sbaihia) was used as an experimental site to analyze and parameterize the effects of bench terraces on water and sediment yield using the Soil and Water Assessment Tool. Model calibration and validation was performed, taking advantage from high-quality daily runoff data from 1994 to 2000 and a high-resolution bathymetric survey of the hill lake at the watershed outlet. Soil and Water Assessment Tool indicated that the local terraces, established on approximately 50% of the watershed area, reduced surface runoff by around 19% and sediment yield by around 22%, decelerating the siltation of the hill lake. Targeted model calibration delivered concise parameter set describing bench terrace impacts on runoff (Soil Conservation Service curve number method) and sediment yield (Modified Universal Soil Loss Equation) crucial for outscaling of soil and water conservation impacts and suitable watershed management. © 2016 The Authors. Land Degradation & Development Published by John Wiley & Sons Ltd.
Authors & Co-Authors
Ben Khelifa, Walid
Tunisia, Ariana
University of Carthage, Institut National de Recherches en Génie Rural Eaux et Forêts
Tunisia, Tunis
University of Carthage, Institut National Agronomique de Tunisie
Hermassi, Taoufik
Tunisia, Tunis
University of Carthage, Institut National Agronomique de Tunisie
Strohmeier, Stefan Martin
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Zucca, Claudio
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Ziadat, Feras M.
Italy, Rome
Food and Agriculture Organization of the United Nations
Boufaroua, Mohamed
Tunisia, Tunis
Ministry of Agriculture
Habaïeb, Hamadi
Tunisia, Ariana
University of Carthage, Institut National de Recherches en Génie Rural Eaux et Forêts
Tunisia, Tunis
University of Carthage, Institut National Agronomique de Tunisie
Statistics
Citations: 50
Authors: 7
Affiliations: 5
Identifiers
Doi:
10.1002/ldr.2685
ISSN:
10853278
e-ISSN:
1099145X
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative
Study Locations
Tunisia