(Article of periodic en Anglais - 2013)

Document title

Application of 210Pbex inventories to measure net hillslope erosion at burned sites

Authors(s) and Affiliation(s)

PERREAULT L.M. (1) ; YAGER E.M. (1) ; AALTO R. (2) ;
(1) Center for Ecohydraulics Research, Univ. of Idaho, Boise, ETATS-UNIS
(2) Geography, College of Life and Environmental Sciences, Univ., Exeter, ROYAUME-UNI


Fallout radionuclides, including lead-210 excess (210Pbex), have only recently been applied in burned terrain. The AA. collected over 400 soil samples from unburned, moderately and severely burned forested sites in central Idaho. They measured soil 210Pbex content at stable reference and eroding sites and in mineral and organic soil components. At all sites, organic matter had the highest concentration of 210Pbex. The results indicate that most 210Pbex in these semi-arid, forested sites was bound to organic matter, and that a substantial portion of this lead was lost due to forest fires. Thus, given methodological uncertainties, 210Pbex losses due to fire, and the subsequent sensitivity of calculated net erosion rates to these lower 210Pbex inventories, the AA. suggest this method should not be used in burned terrain to calculate absolute net erosion and deposition rates. However, within a given burned site, 210Pbex inventories still provide useful information describing relative soil losses and storage across the landscape


Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no2 [pp. 133-145]

Bibliographic references : 1 p.

Collation : 7 fig., 1 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3266

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