Abstract: | This work is an attempt to establish the morphogenesis of four hydromorphic profiles (Plateau des Fagnes, Eastern part of the Belgian Ardennes). Various scientifical approaches were used, namely geomorphology, mineralogy and palynology.The aim was to show that very sharp discordances may appear between “inherited” profile morphology and the present state of hydromorphy characterized by vegetation, humus forms, and physico-chemical measurements, such as redox potential and oxygen diffusion flux intensity (see partie II) |