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(Article of periodic en Anglais - 2009)

Document title

The "humped" soil production function : eroding Arnhem Land, Australia

Authors(s) and Affiliation(s)

HEIMSATH A.M. (1) ; FINK D. (2) ; HANCOCK G.R. (3) ;
(1) School of Earth and Space Exploration, Arizona State Univ., Tempe, ETATS-UNIS
(2) Australian Nuclear Science and Technology Organisation (ANSTO), NSW, Menai, AUSTRALIE
(3) School of Environmental and Life Sciences, Univ. of Newcastle, Callaghan, AUSTRALIE

Abstract

The AA. report erosion rates and processes, determined from in situ-produced 10Be and 26Al across a soil-mantled landscape of Arnhem Land, northern Australia. Soil production rates peak under a soil thickness of about 35 cm and they observe no soil thicknesses between exposed bedrock and this thickness. These results thus quantify a well-defined humped soil-production function, in contrast to functions reported for other landscapes. They compare this function to a previously reported exponential decline of soil production rates with increasing soil thickness across the passive margin exposed in the Bega Valley, south-eastern Australia, and found remarkable similarities in rates. Quantifying such rates and processes help determine spatial variations of soil thickness as well as helping to predict the sustainability of the Earth's soil resource under different erosional regimes

Source

Article of periodic

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

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

Millesime : 2009, vol. 34, no12 [pp. 1674-1684]

Bibliographic references : 2 p.

Collation : 6 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1859

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