Evaluation of soil and water conservation measures in a semi-arid river basin in Tunisia using SWAT

被引：54

作者：

Abouabdillah, A. ^{[1
,2
]}

White, M. ^{[3
]}

Arnold, J. G. ^{[3
]}

De Girolamo, A. M. ^{[4
]}

Oueslati, O. ^{[4
]}

Maataoui, A. ^{[1
]}

Lo Porto, A. ^{[4
]}

机构：

[1] Natl Sch Agr Meknes, Dept Agron, Meknes 50001, Morocco

[2] Texas A&M AgriLife Res, Blackland Res & Extens Ctr, Temple, TX 76502 USA

[3] ARS, USDA, Temple, TX 76502 USA

[4] CNR, Water Res Inst, I-70132 Bari, Italy

来源：

SOIL USE AND MANAGEMENT | 2014年 / 30卷 / 04期

关键词：

Soil and water conservation works; SWAT model; semi-arid region; catchment management; hydrological changes; HARVESTING TECHNIQUES; ASSESSMENT-TOOL; IMPACT; MODEL; MANAGEMENT; CATCHMENT; QUALITY;

D O I：

10.1111/sum.12146

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The Merguellil catchment (central Tunisia) is a typical Mediterranean semi-arid basin, which suffers from regular water shortage aggravated by current droughts. Over recent decades, the continuous construction of small and large dams and soil and water conservation works (i.e. contour ridges) have taken place within this watershed. However, little is known about the effect of these water-harvesting systems on the water balance components of arid or semi-arid basins. In this paper, we present the results of a study, which evaluates the impact of the contour ridges on water balance components and erosion at basin scale by using the soil and water assessment tool model (SWAT). Large dams were modelled as reservoirs, small dams as ponds and contour ridges as potholes that fill with water and increase the percolation into the aquifer. The model predicts that contour ridges produce annually a reduction of 32 and 21% in surface run-off and river discharge, respectively, and an increase in aquifer recharge of 50%. At the same time, retention of a large proportion of entrained sediment (26%) was modelled.

引用

页码：539 / 549

页数：11