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(Article of periodic en Anglais - 2010)

Document title

Environmental stress and landscape recovery in a semi-arid area, The Karoo, South Africa

Authors(s) and Affiliation(s)

BOARDMAN J. (4 1) ; FOSTER I. (3 2) ; ROWNTREE K. (2) ; MIGHALL T. (3) ; GATES J. (4) ;
(1) Department of Environmental and Geographical Science, University of Cape Town, Rondebosch, AFRIQUE DU SUD
(2) Department of Geography, Rhodes University, Eastern Cape, AFRIQUE DU SUD
(3) Department of Geography and the Environment, University of Aberdeen, Aberdeen, ROYAUME-UNI

  • Dep. of Molecular and Applied Biosciences, Univ. of Westminter, London, ROYAUME-UNI
(4) Environmental Change Inst., Univ. Centre for the Environment, Oxford, ROYAUME-UNI

Abstract

Semi-arid landscapes are vulnerable to cultivation, overgrazing and climate variability, although it is difficult to identify the relative significance of these three factors. In the South African Karoo, the 'desertification debate' seeks to explain a change to more shrubby vegetation in heavily grazed areas. The AA. examine these issues in catchments where farm reservoirs provide sediment stores with 137Cs, 210Pb, geochemical and mineral magnetic signatures. Rainfall data and stocking numbers are reported and current erosion rates are estimated. Recovery following disturbance is occurring slowly and is likely to take >100 years. De-stocking and better management systems are reducing erosion rates but may be offset by increases in rainfall intensity

Source

Article of periodic

published at : Scottish geographical journal / ISSN 1751-665X

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1999)

Millesime : 2010, vol. 126, no2 [pp. 64-75]

Bibliographic references : 2 p.

Collation : 4 fig., 1 tabl.

Language

Anglais

Localisation

Go to fulltext  En français :

Digital Object Identifier

Go to electronic document thanks to its DOI : 10.1080/14702541003711038

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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