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CRYOSOLS
Soils with permafrost within 1 m of the soil surface, characterised by cryogenic processes (e.g. frost heave, frost cracking and the formation of segregation ice) and characteristic surface forms (e.g. patterned ground and frost mounds). ice wedges and/or involutions may occur in the subsoil. global warming is potentially a major problem in Arctic and subarctic areas, releasing greenhouse gases from these soils (soil taxonomy: Gelisols).
[See alsocryoturbation, world reference base for soil resources (wrb)]
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