Sediment Delivery Ratio from a small Semiarid Watershed of Brazil

نویسندگان

چکیده

Assessing technologies based on sediment yield in watersheds is increasingly important to determine the delivery rate. This work aimed values of hydrographic basin river Jacu semiarid Pernambuco and its relations with soil vegetation. Therefore, it was calculated rates interrill rill erosion by testing under shrub uncovered Inceptisols conditions, carried out direct measurement campaigns suspended bedload, means US DH – 48 e BLH 84, respectively. The obtained stream considered low. loss due interril conditions equal 8.43 t ha -1 high, as well same way for erodibility 0.0021142 kg N s critical shear stress 2.34 Pa. mean value ratio watershed 0.165 ranged from 0.29 year 2008 0.026 2010. variation associated natural variability environment, indicating necessity assessment a large period years improve knowledge about watershed. Taxa de entrega Sedimentos uma pequena bacia Semi-Árida do Brasil R E S U M O Avaliar tecnologias baseadas no rendimento sedimentos em bacias hidrográficas é cada vez mais importante para determinar taxa entrega. Nesse trabalho objetivou-se os valores da hidrográfica rio semiárido suas relações com o solo vegetação. Portanto, foram calculadas taxas erosão entre perfurações sulcos através testes sob condições arbustivas descobertas Inceptissolos, realizadas campanhas medição direta suspensão carga, por meio - respectivamente. obtido córrego foi considerado baixo. Considerou-se alta perda devido à não iguais 8,43 , assim como erodibilidade igual 0,0021142 tensão crítica 2,34 valor médio razão 0,165 variou 0,29 ano 0,026 Essa variação está associada variabilidade ambiente semiárido, indicando necessidade avaliação um grande período anos melhorar conhecimento sobre Jacu. Palavras-chaves: Erosão hídrica, Variabilidade Conservação

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ژورنال

عنوان ژورنال: Revista Brasileira de Geografia Física

سال: 2021

ISSN: ['1984-2295']

DOI: https://doi.org/10.26848/rbgf.v14.3.p1586-1596