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(Article of periodic en Anglais - 1988)

Document title

An improved methodology for erosion hazard mapping part I : the technique

Authors(s) and Affiliation(s)

STOCKING M. ; CHAKELA Q. ; ELWELL H. ;

Abstract

Basing the new procedure on African conditions, limited data availability and coverage at a sub-continental scale, the SLEMSA (Soil Loss Estimation Model for Southern Africa) framework is shown as a useful tool in designing a suitable methodology. Through the major factors in erosion : relief, rainfall, vegetation and soil, variables are derived for the measurement of their influence on erosion. The abstraction of the variables : average slope, kinetic energy of rainfall, vegetal cover and an index of erodibility, is described and it is shown how they can be combined through a set of design graphs taken from the Zimbabwe Highveld version of the SLEMSA framework. Hazard is expressed in " Erosion Hazard Units " and not tonnes per hectare

Source

Article of periodic

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 1988, vol. 70, no3 [pp. 169-180]

Bibliographic references : 17 réf.

Language

Anglais

Localisation

Centre national de la recherche scientifique

INIST-CNRS, Cote INIST : 2704 A

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