Une méthode de détermination de l'érodabilité des terrains quaternaires par traitement automatique des données cartographiées, à l'exemple de la région de Kristel - Oranais (Algérie)

摘要

The erodibility of the terranes is determined by studying the correlations between erosion features on one side, and geological (lithology, slope, exposure) and environmental explanatory factors (vegetation, land use) on the other. Thematic cartography basically helps to gather the data analysed successively on different scales using the techniques of the factorial analysis of correspondences : Regression by F.A.C., « Nuées Dynamiques ». From this results a scale of sensibility to erosion, which allows a Forcasting Map for Erodibility to be drawn up, in which Quaternary deposits are distinguished on a genetic basis.