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Assessment of badland dynamics using multi-temporal Landsat imagery : an example from the Spanish Pre-Pyrenees

Auteur(s) et Affiliation(s)

Dept. of Geography, Univ., Zaragoza, Espagne
Pyrenean Inst. of Ecology (CSIC), Zaragoza, Espagne
JIMÉNEZ, I.
Escuela Politécnica Superior, Huesca, Espagne


Description :
This study investigated the use of remote sensing data and GIS techniques in identifying badland areas and erosion risk areas, assessing the magnitude and rate of erosion processes, and estimating the geographical factors that control erosion. The remote sensing information was generated from Landsat TM and Landsat ETM+ images for the period 1984-2006, which were merged with aerial photographs. The study was performed in a corridor of Eocene marls in the Pre-Pyrenees. Various spectral indices were assessed for their performance in revealing badland dynamics. From the results, the normalized difference vegetation index (NDVI) is recommended. A map of possible erosion risk was generated as a function of the initial environmental conditions and the evolution of erosion from 1984 to 2006.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2012, vol. 96, p. 1-11, nombre de pages : 11, Références bibliographiques : 64 ref.

Date :
2012

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais
Droits :
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