Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Evaluation of soil and water conservation measures in a semi-arid river basin in Tunisia using SWAT |
| Abstract | 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. |
| Source | Soil use and management 30 (4), pp. 539–549 |
| Keywords | Soil and water conservation worksSWAT modelsemi-arid regioncatchment managementhydrological changes |
| Journal | Soil use and management |
| Editor | Blackwell Scientific., Oxford, Regno Unito |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1111/sum.12146 |
| Authors | Abouabdillah, A.; White, M.; Arnold, J. G.; De Girolamo, A. M.; Oueslati, O.; Maataoui, A.; Lo Porto, A. |
| Text | 299988 2014 10.1111/sum.12146 ISI Web of Science WOS 000346706100011 Soil and water conservation works SWAT model semi arid region catchment management hydrological changes Evaluation of soil and water conservation measures in a semi arid river basin in Tunisia using SWAT Abouabdillah, A.; White, M.; Arnold, J. G.; De Girolamo, A. M.; Oueslati, O.; Maataoui, A.; Lo Porto, A. Natl Sch Agr Meknes; Texas A M AgriLife Res; United States Department of Agriculture USDA ; Consiglio Nazionale delle Ricerche CNR Istituto di Ricerca sulle Acque IRSA 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. 30 Articolo in rivista Blackwell Scientific. 0266 0032 Soil use and management Soil use and management Soil use manage. antonio.loporto LO PORTO ANTONIO annamaria.degirolamo DE GIROLAMO ANNA MARIA TA.P04.005.006 Gestione a scala di bacino delle risorse idriche e sostenibilita dell uso irriguo in agricoltura |