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date: 08 August 2020

polar-desert soil 

A Dictionary of Ecology

Michael Allaby

A *mineral soil that lacks identifiable *soil horizons, and has almost no surface *humus. It is associated with arid, polar-desert environments where precipitation is less than 130 mm annually, plant cover less than 25 per cent, and thawed, active soil is 20–70 mm deep.... ...

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