| Abstract | [In this study, the simulations generated by two of the most widely used hydrological basin-scale models, the
Annualized Agricultural Non-Point Source (AnnAGNPS) and the Soil and Water Assessment Tool (SWAT), were
compared in a Mediterranean watershed, the Carapelle (Apulia, Southern Italy). Input data requirements, time
and efforts needed for input preparation, strength and weakness points of each model, ease of use and limitations
were evaluated in order to give information to users. Models were calibrated and validated at monthly time scale
for hydrology and sediment load using a four year period of observations (streamflow and suspended sediment
concentrations). In the driest year, the specific sediment load measured at the outlet was 0.89 t ha-1 yr-1, while
the simulated values were 0.83 t ha-1 yr-1 and 1.99 t ha-1 yr-1 for SWAT and AnnAGNPS, respectively. In the
wettest year, the specific measured sediment load was 7.45 t ha-1 yr-1, and the simulated values were
8.27 t ha-1 yr-1 and 6.23 t ha-1 yr-1 for SWAT and AnnAGNPS, respectively. Both models showed from fair to
a very good correlation between observed and simulated streamflow and satisfactory for sediment load. Results
showed that most of the basin is under moderate (1.4-10 t ha-1 yr-1) and high-risk erosion (> 10 t ha-1 yr-1).
The sediment yield predicted by the SWAT and AnnAGNPS models were compared with estimates of soil erosion
simulated by models for Europe (PESERA and RUSLE2015). The average gross erosion estimated by the
RUSLE2015 model (12.5 t ha-1 yr-1) resulted comparable with the average specific sediment yield estimated by
SWAT (8.8 t ha-1 yr-1) and AnnAGNPS (5.6 t ha-1 yr-1), while it was found that the average soil erosion
estimated by PESERA is lower than the other estimates (1.2 t ha-1 yr-1).object Object] |
| Text | 389701 2018 10.1016/j.envres.2018.06.029 Scopus 2 s2.0 85048704543 ISI Web of Science WOS WOS 000445318200039 soil erosion sediment load SWAT AnnAGNPS RUSLE2015 PESERA Modelling soil erosion in a Mediterranean watershed Comparison between SWAT and AnnAGNPS models Abdelwahab O.M.M.; Ricci G.F.; De Girolamo A.M.; Gentile F. Cairo University, Faculty of Agriculture, Agricultural Engineering Department, Cairo, , Egypt; University of Bari Aldo Moro, Department of Agricultural and Environmental Sciences, Bari, , Italy; National Research Council, Water Research Institute IRSA CNR , Bari, , , Italy; National Research Council, Water Research Institute IRSA CNR , Bari, , , Italy In this study, the simulations generated by two of the most widely used hydrological basin scale models, the Annualized Agricultural Non Point Source AnnAGNPS and the Soil and Water Assessment Tool SWAT , were compared in a Mediterranean watershed, the Carapelle Apulia, Southern Italy . Input data requirements, time and efforts needed for input preparation, strength and weakness points of each model, ease of use and limitations were evaluated in order to give information to users. Models were calibrated and validated at monthly time scale for hydrology and sediment load using a four year period of observations streamflow and suspended sediment concentrations . In the driest year, the specific sediment load measured at the outlet was 0.89 t ha 1 yr 1, while the simulated values were 0.83 t ha 1 yr 1 and 1.99 t ha 1 yr 1 for SWAT and AnnAGNPS, respectively. In the wettest year, the specific measured sediment load was 7.45 t ha 1 yr 1, and the simulated values were 8.27 t ha 1 yr 1 and 6.23 t ha 1 yr 1 for SWAT and AnnAGNPS, respectively. Both models showed from fair to a very good correlation between observed and simulated streamflow and satisfactory for sediment load. Results showed that most of the basin is under moderate 1.4 10 t ha 1 yr 1 and high risk erosion > 10 t ha 1 yr 1 . The sediment yield predicted by the SWAT and AnnAGNPS models were compared with estimates of soil erosion simulated by models for Europe PESERA and RUSLE2015 . The average gross erosion estimated by the RUSLE2015 model 12.5 t ha 1 yr 1 resulted comparable with the average specific sediment yield estimated by SWAT 8.8 t ha 1 yr 1 and AnnAGNPS 5.6 t ha 1 yr 1 , while it was found that the average soil erosion estimated by PESERA is lower than the other estimates 1.2 t ha 1 yr 1 .object Object 166 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85048704543 origin=inward Modelling soil erosion in a Mediterranean watershed Comparison between SWAT and AnnAGNPS models In this study, the simulations generated by two of the most widely used hydrological basin scale models, the Annualized Agricultural Non Point Source AnnAGNPS and the Soil and Water Assessment Tool SWAT , were compared in a Mediterranean watershed, the Carapelle Apulia, Southern Italy . De Girolamo et al_ER.pdf Articolo in rivista Elsevier. 0013 9351 Environmental research N. Y. N. Y., Print Environmental research N. Y. N. Y., Print Environ. res. N. Y. N. Y., Print Environmental research. N. Y. N. Y., Print Environmental research. N. Y. N. Y., Print Section A N. Y. N. Y., Print annamaria.degirolamo DE GIROLAMO ANNA MARIA |
