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(Article of periodic en Anglais - 2013)

Document title

The effect of soil bulk density on rill erosion - results of experimental studies

Authors(s) and Affiliation(s)

HIEKE F. (1) ; SCHMIDT J. (2) ;
(1) Büro für Bodenwissenschaft, Freiberg, ALLEMAGNE
(2) Fachgebiet Boden- und Gewässerschutz, Freiberg, ALLEMAGNE

Abstract

In order to generate rill erosion under controlled and variable conditions a 2 meter long and 0.1 meter wide flume was used and adjusted to 2% slope. Homogenized silty to loamy soil material was filled in the flume and a plane bed prepared. At the beginning of the experiments runoff formed a nearly uniform water sheet and initial sheet erosion acted on the soil surface. During this stage microrills formed and selective sediment transport conditions provoked the formation of ripples. Ripples were found to be the precondition for the development of headcuts. The headcut formation rate and headcut duration, as well as the rate of headcut retreat, were found to be affected by soil bulk density. The relationships are non-linear and discontinuous. The headcut formation rate, which expresses the number of headcuts per time and slope length unit influences directly the sediment concentration of surface runoff and thus soil loss by rill erosion

Source

Article of periodic

published at : Zeitschrift für Geomorphologie / ISSN 0372-8854 / CODEN ZGMPAG

Editor : Gebruder Borntraeger, Stuttgart - ALLEMAGNE (1925)

Millesime : 2013, vol. 57, no2 [pp. 245-266]

Bibliographic references : 3 p.

Collation : 15 fig., 8 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 8829

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1127/0372-8854/2012/0091

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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