Modelling Soil Erosion and Sediment Transport under Different Land Management Options in a Southern-Italy Watershed

Modelling Soil Erosion and Sediment Transport under Different Land Management Options in a Southern-Italy Watershed

I. Abuiziah T. Bisantino F. Gentile G. Trisorio Liuzzi 

Dipartimento di Scienze Agro-Ambientali e Territoriali - DISAAT, University of Bari “A. Moro”, Via Amendola 165/A 70126 Bari, Italy

Page: 
116-127
|
DOI: 
https://doi.org/10.2495/SAFE-V3-N2-116-127
Received: 
N/A
| |
Accepted: 
N/A
| | Citation

OPEN ACCESS

Abstract: 

The aim of this study is to investigate the influence of different land management options on the sedi-ment load at the watershed scale. To reach this, the Annualized agricultural non-point source model was used in the Candelaro basin (2300 km2). The watershed is located in a semi-arid area of southern Italy (Puglia region) and is affected by extensive erosion processes on the hillslopes. The sediment transport simulations have been compared with the 15 years (1970–1984) data coming from measures taken in two sub-watersheds (Vulgano and Salsola). Later, the model has been applied for a period of 24 years (1985–2008) to evaluate the effects of different land management options on the sediment yield: traditional best management practices, environmentally targeted agricultural practices and water and soil conservation works. The results obtained in the first part of the work show that the Annual-ized agricultural non-point source model performs well in simulating runoff and sediment yields at the watershed scale. Furthermore, the analysis carried out shows that the model is an efficient tool to assess the influence of different management options in the long term and in different weather conditions.

Keywords: 

AnnAGNPS model, sediment yield, soil erosion, surface runoff, watershed management options

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