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(Article of periodic en Anglais - 2005)

Document title

Caesium-137-derived erosion rates in an agricultural setting : the effects of model assumptions and management practices

published at : Quantifying rates and timescales of geomorphic processes : part 2. Special issue

Authors(s) and Affiliation(s)

FORNES W.L. ; WHITING P.J. ; WILSON C.G. ; MATISOFF G. ;

Abstract

Soil erosion rates at the National Soil Tilth Laboratory Deep Loess Research Station, near Treynor, southwest Iowa, were determined from Cs 137 inventories using a multi-box numerical model that incorporates time-dependent atmospheric Cs 137 deposition. Nine sites along a downslope transect where Cs 137 inventories were measured in 1974 by Spomer et al. were revisited in 1998, allowing estimation of erosion over 3 time periods : 1954-1974, 1954-1998 and 1974-1998. The results permit comparison of erosion rates over these 3 periods, to assess the effects of changes in soil conservation practices. The AA. introduce a model that accounts for time-dependent Cs 137 fallout, precipitation and soil cultivation

Source

Thematical fascicle

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

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

Millesime : 2005, vol. 30, no 9 [pp. 1181-1189]

Bibliographic references : 43 ref.

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2006.
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