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(Article of periodic en Anglais - 2013)

Document title

Exploring the role of rainfall variability and extreme events in long-term landscape development

Authors(s) and Affiliation(s)

BAARTMAN J.E.M. (1 2 3) ; TEMME A.J.A.M. (1) ; VELDKAMP T. (3) ; JETTEN V.G. (3) ; SCHOORL J.M. (1) ;
(1) Soil Geography and Landscape Group, Univ., Wageningen, PAYS-BAS
(2) Soil Physics and Land Management Group, Univ., Wageningen, PAYS-BAS
(3) ITC, Enschede, PAYS-BAS

Abstract

An obvious timescale gap exists between a single storm event and long term landscape development. In this study the event- and physically based OpenLISEM soil erosion model was compared to the landscape evolution model LAPSUS, deliberately extending and shortening the timescales for which each model was developed. The erosion effects of rainfall variability, climate and land use change were explored on a centennial timescale. Results show non-linear behaviour between rainfall input and simulated net erosion. Simulated net erosion for increased rainfall erosivity was compared to rainfall variability, showing that mean annual net erosion of up to 15% increased erosivity is not significantly different from annual mean net erosion of the original simulations. Single events must be of very high magnitude and/or frequency to leave a signal in the landscape that is beyond the scope of natural rainfall variability. Scenarios of human impact show that land use changes can have a potentially larger effect on erosion dynamics than climate variability and change

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2013, vol. 109 [pp. 25-38]

Bibliographic references : 1 p.

Collation : 9 fig., 8 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.05.003

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 27740364 : Permanent link - XML version
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