Evaluating of Sediment Delivery Ratio on Spatial and Temporal Variabilities in Semiarid Watershed Brazil | Chapter 14 | Advances and Trends in Agricultural Sciences Vol. 2

Evaluation of sediment delivery ratio is important for determining watershed sediment yield. Rates of both interrill and rill erosion were calculated under shrub and uncovered Inceptisols conditions and were not observed to the presence by ravines and gullies in the watershed of Jacu River, in a semiarid region, Brazil. Direct measurement campaigns of suspended sediment and bedload were also carried out by means of the US DH–48 for collection of suspended sediment samples and US BLH–84 used to collect samples bed load. The soil loss due to interril erosion under uncovered conditions was equal to 8.43 t ha-1 and was considered high, and the same was true for the values of rill erosion with erodibility equal to 0.0021142 kg N-1 s-1 and critical shear stress (τc) equal to 2.34 Pa. The mean value of sediment delivery ratio of Jacu watershed was equal to 0.165 and ranged from 0.29 in the year 2008 to 0.026 in 2010. This variation was associated with the natural variability of semiarid environment, indicating the necessity of assessment for a longer period to deepen our knowledge of sediment delivery ratio of the Jacu semiarid watershed.

Author(s) Details

Victor Casimiro Piscoya
Department of Rural Technology, Environmental Engineering Pós- Graduate Rural Federal of Pernambuco University (UFRPE), Recife-PE, Brazil.

Vijay P. Singh
Department of Biological and Agricultural Engineering and Zachry, Department of Civil Engineering, Texas A&M University, College Station, Texas 77843-2117, USA.

José Ramon Barros Cantalice
Department of Rural Technology, Environmental Engineering Pós- Graduate Rural Federal of Pernambuco University (UFRPE), Recife-PE, Brazil.

Moacyr Cunha Filho
Department of Informatics and Statistics, Rural Federal of Pernambuco University (UFRPE), Recife-PE, Brazil.

Sergio Monthezuma Santoianni Guerra
Department of Rural Technology, Environmental Engineering Pós- Graduate Rural Federal of Pernambuco University (UFRPE), Recife-PE, Brazil.

Cristina dos Santos Ribeiro
Environmental Engineering Pós- Graduate Rural Federal of Pernambuco University (UFRPE), Recife-PE, Brazil

Renisson Neponuceno de Araújo Filho
Federal University of Tocantins (UFT), Tocantins, Brazil.

Sandro Augusto Bezerra
Federal Institute of Pernambuco-Campus Vitória de Santo Antão (IFPE), Recife-PE, Brazil.

Read full article: http://bp.bookpi.org/index.php/bpi/catalog/view/76/1026/730-1
View Volume: https://doi.org/10.9734/bpi/atias/v2

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