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(Article of periodic en Anglais - 2013)

Document title

Flow hydraulic characteristic effect on sediment and solute transport on slope erosion

Authors(s) and Affiliation(s)

GUO T. (1) ; WANG Q. (2) ; LI D. (1) ; ZHUANG J. (3) ; WU L. (4) ;
(1) Guangdong Inst. of Eco-Environmental and Soil Sciences, Guangzhou, CHINE
(2) Univ. of Technology, Xian, CHINE
(3) Dep. of Biosystems Engineering and Soil Science, Inst. for a Secure and Sustainable Environment, Center for Environmental Biotechnology, Univ. of Tennessee, Knoxville, ETATS-UNIS
(4) Dep. of Environmental Science, Univ. of California, Riverside, ETATS-UNIS

Abstract

Different hydraulic parameters, including the hydraulic shear stress, unit length shear force, stream power, unit steam power, and effective stream power were used to quantify flow detachment. Two series of soil surface conditions were prepared in experiments : disturbed and uniform bare loess slope in laboratory; natural fallowed soil loess with or without stone covers in field experiments. The aim of this study was to assess the differences in hydraulic parameters and sediment detachment under these different soil surface conditions. The results show that the unit sediment load (Rs) has a good linear relationship with the unit runoff rate (Rr) for the flume and field experiments. The rate of Manning roughness coefficient to mean flow depth (n/h) is a good hydraulic indicator like as the stream power and Reynolds number for predicting the sediment load and solute transport rate in soil erosion

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 107 [pp. 145-153]

Bibliographic references : 43 ref.

Collation : 6 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.03.001

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 27624767 : Permanent link - XML version
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