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(Article of periodic en Anglais - 2010)

Document title

Interrill erosion from disturbed and undisturbed samples in relation to topsoil aggregate stability in red soils from subtropical China

Authors(s) and Affiliation(s)

SHI Z.-H. (1 2) ; YAN F.-L. (2 3) ; LI L. (2) ; CAI C.-F. (2) ;
(1) State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, CHINE
(2) Key Lab. of Subtropical Agriculture & Environment of Ministry of Agriculture, Agriculture Univ., Wuhan, Huazhong, CHINE
(3) Changjiang Water Resource Protection Inst., Changjiang Water resources Commission, Wuhan, CHINE

Abstract

This study was designed to reveal the effects of aggregate breakdown mechanisms on interrill erosion dynamics and develop an improved model for assessing interrill soil loss, which incorporated the soil aggregate stability tests as a substitute for the interrill erodibility parameter, from both disturbed and undisturbed samples for red soils in subtropical China. Six cultivated areas of sloping land with red soils were selected, and topsoil aggregate stability was analyzed using the Le Bissonnais method to determine the different disaggregation forces. Laboratory rainfall simulations were designed to distinguish the effects of slaking (at different wetting rates) and mechanical breakdown (with and without screening) on soil erosion characteristics. The results extend the validity of soil aggregation characterization as an appropriate indicator of soil susceptibility to interrill erosion in red soils from subtropical China

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2010, vol. 81, no3 [pp. 240-248]

Bibliographic references : 38 ref.

Collation : 7 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2010.04.007

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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