"Acrisols are soils that have a higher clay content in the subsoil than in the topsoil as a result of pedogenetic processes (especially clay migration) leading to an argic subsoil horizon. Acrisols have in certain depths a low base saturation and low-activity clays."^^ . "Wikipedia:Acrisol"^^ . "ENVO:00002234"^^ . . . "acrisol"^^ . "ENVO"^^ .