Mots-clés
Action anthropique Adaptation Afrique Afrique subsaharienne Domaine aride Dégradation de l'environnement Erosion des sols Lutte contre l'érosion Pente de versant Politique locale Propriétés du sol Relation homme-environnement Stratégie d'acteurs Surpâturage Vitesse d'érosion Vulnérabilité Zone intertropicale Adaptation Africa Arid area Decision making process Environmental degradation Erosion control Erosion rate Human impact Local policy Man-environment relations Over-grazing Slope gradient Soil erosion Soil properties Subsaharan Africa Tropical zone Vulnerability Acción antrópica Adaptación Campo árido Degradación del medio ambiente Erosión de los suelos Estrategia de actores Inclinación de la vertiente Lucha contra la erosión Política local Propiedades del suelo Relación hombre-medio ambiente Sobrepastoreo Velocidad de erosión Vulnerabilidad Zona intertropical África África subsaharianaPerspectives on the assumed causes of land degradation in the rangelands of Sub-Saharan Africa
Auteur(s) et Affiliation(s)
KIAGE, L.M.
Georgia State Univ., Etats-Unis
Description :
This review shows that the human-induced causes of soil erosion and land degradation in Sub-Saharan Africa are not fully understood. The popular views of human-induced soil erosion and land degradation not only fail to take into consideration the fact that land degradation is primarily a physical process, but also they do injustice to adaptive ecosystem management by the local inhabitants. The review specifically questions the stereotypes of overpopulation, overgrazing, deforestation, overstocking, and general rangeland degradation due to human resource use in Sub-Saharan Africa. Empirical evidence suggests that biophysical factors including soil properties, climatic characteristics, topography, and vegetation can sometimes interact among themselves to yield high soil erosion and degradation rates independent of anthropogenic impacts.
Type de document :
Article de périodique
Source :
Progress in physical geography, issn : 0309-1333, 2013, vol. 37, n°. 5, p. 664-684, nombre de pages : 21, Références bibliographiques : 5 p.
Date :
2013
Editeur :
Pays édition : Royaume-Uni, London, Sage Publications
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)