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(Article of periodic en Anglais - 2009)

Document title

Changing sediment yield as an indicator of improved soil management practices in southern Brazil

published at : Sediment sources and sediment delivery under environmental change. Special issue

Authors(s) and Affiliation(s)

MINELLA J.P.G. (1 2) ; MERTEN G.H. (2) ; WALLING D.E. (3) ; REICHERT J.M. (1) ;
(1) Dep. Soils, Federal Univ., Santa Maria, BRESIL
(2) Inst. Hydraulic Research, Federal Univ. Rio Grande do Sul, Porto Alegre, BRESIL
(3) Dep. of Geography, Univ., Exeter, ROYAUME-UNI

Abstract

This study presents results from a hydrosedimentological monitoring project undertaken in a small rural catchment in Southern Brazil before and after the introduction of conservation tillage practices implemented by the RS-RURAL — Program Against Rural Poverty : use of winter cover crops and minimum tillage tobacco cultivation. Data on precipitation, runoff volume, maximum flow and sediment yield were assembled for representative storm events occurring between May 2002 and March 2006, and analyzed to identify changes in the storm runoff and storm-period sediment response of the study catchment. The results provide evidence of statistically significant reductions in storm runoff, maximum flow rate and sediment yield after implementation of the conservation practices. Sediment sources were also investigated using the fingerprinting technique. Results emphasize the complexity of the relationship between sediment yield, the effects of climactic variability, and changes in land use and management

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

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

Millesime : 2009, vol. 79, no 3 [pp. 228-236]

Bibliographic references : 0,5 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2009.02.020

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