Study of a Toposequence of West Mayo-Kani Soils (Far North Cameroon)

The soils of Gadas, object the present study, are identified on macromorphological, physico-chemical level and indices erodibility related to their properties. analyzes were carried out by standard methods. macromorphological analysis a toposequence made it possible identify five types soils: lithosols which occupy high zones landscape, colluvial (arenosols, regosols) located piedmont, alluvial (fluvisols) at bottom slope in plain most extensive, topomorphic vertisols, brown formed granite either between soil soil. Physico-chemical Gadas show that these weakly acidic neutral, sandy sandy-clayey, saturated, low nitrogen organic matter characterized average proportions exchangeable bases. study erodibility, based use indices, showed granites susceptible erosion, whereas vertisols least vulnerable erosion.