Cryosols are mineral soils formed under conditions of permafrost. Water is present primarily as ice, and ice‐related processes are the dominant pedogenetic processes involved in the formation of these soils. This account is from FAO (2001).
Connotation. Frost‐affected soils; from Gr. kraios, cold, ice.
Synonyms. General names used internationally are permafrost soils, polar desert soils, cryomorphic soils. cryosolic soils in Canada, gelisols (Soil Taxonomy) cryozems (Russia).
Definition. Soils having one or more cryic horizons within 100 cm of the soil surface (FAO, 2001).
Parent material. A wide variety of unconsolidated materials, including glacial till and aeolian, alluvial, colluvial and residual materials.
Environment.Flat to mountainous areas in Antarctic, Arctic, sub‐arctic and boreal regions affected by permafrost, notably in depressions. Cryosols are associated with sparsely to continuously vegetated tundra, open‐canopy lichen coniferous forest and closed‐canopy coniferous...