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climate
-12 to -6*c, 150-250mm rainfall annually
vegetation
mosses, lichens, low shrubs
permafrost
contains 1,600 Gt organic carbon
impact of climate change
permafrost contributes 0.3-0.6 Gt of CO2 annually
positive feedback
permafrost melting, loss of albedo
management strategies
permafrost protection, limits industrial activity and infrastructure developing in sensitive area