(Article of periodic en Anglais - 2007)

Document title

Regional variability of volcanic ash soils in south Ecuador : the relation with parent material, climate and land use

Authors(s) and Affiliation(s)



In this high Andes region, the land use changes affect particularly the páramo. The AA. analyse the regional variability of the soils in the south Ecuadorian rio Paute basin. Data from soil profiles along north-south transects are used to determine the soil properties, and to relate the spatial variability of these properties to the major trends in parent material, volcanic ash deposits and climate. The impact of human activities on the soil properties is assessed in a case study in the Machangara valley. Data from 5 profiles, located in an area with natural grass vegetation are compared with 4 profiles in a heavily disturbed, intensively drained cultivated area. Despite the intensity of the land use, very few significant differences are found


Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2007, vol. 70, no2 [pp. 143-154]

Bibliographic references : 38 ref.

Collation : Illustration ;




Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 16767

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2007.
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