_:b1217715 "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."^^ . _:b1217715 "FAO:http://fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf"^^ . _:b1217715 . _:b1217715 . _:b1217715 .