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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)]

E. MichaelBridgesSwansea University
10.4135/9781446247501.n906

CampbellIB and ClaridgeCGC (1987) Antarctica: Soils, weathering processes and environment. Amsterdam: Elsevier.
KimbleJM (ed.) (2004) Cryosols: Permafrost-affected soils. Berlin: Springer.
LalR and KimbleJM (2000) Soil C pool and dynamics in cold ecoregions. In LalR, KimbleJM and StewartBA (eds)Global climate change and cold regions ecosystems. Boca Raton, FL: CRC Press, 328.
TarnocaiC, KingR and SmithC. (eds) (1999) Cryosols and cryogenic environments. Permafrost and Periglacial Processes10: 209307 [Special Issue].
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