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stagnogley
A stagnogley soil is a typically non-alluvial, non-calcareous, loamy or clayey soil with a relatively impervious, subsurface horizon.〔Whittow, John (1984). ''Dictionary of Physical Geography''. London: Penguin, 1984, p. 507. ISBN 0-14-051094-X.〕
Stagnogley soils are related to the pseudogleys and are a type of gleyic soil. The name of this hygroscopic soil derives from its gley dynamics. The nutrient-poor, often heavily acidified soil is poorly aerated and is not suited to arable use on account of the poor growth performance of cultivated crops.〔Fritz Scheffer, Paul Schachtschabel: ''Lehrbuch der Bodenkunde.'' 15th edn., newly revised and expanded by Hans-Peter Blume. Spektrum, Heidelberg, etc., 2002, ISBN 3-8274-1324-9.〕 As a shallow topsoil with a moderately stony subsoil,〔(BofaWeb ), Landesanstalt für Umwelt, Messungen und Naturschutz Baden-Württemberg, accessed on 1 August 2008〕 it is mainly used for woodland.〔''Stagnogley'' in: ''Microsoft Encarta''〕 Because of its shallow nature it is only suitable for species of trees that thrive well in these conditions, such as the English Oak.
== Formation ==
This type of soil, the topsoil of which becomes bleached as a result of continual waterlogging, is often formed on sand-rich material over dense, sandy-loamy to silty-clayey subsoil - also called ''Sandkerf'' in German - in cool, moist climatic zones. As a result of frequent waterlogging throughout the seasons at low temperatures, minerals like iron and magnesium are released and deposited in sandy topsoils to the sides. Where the soil is saturated all-year round it turns into bog stagnogley and, eventually, into bog.〔 Examples, known as ''missen'' occur in the Black Forest in Germany.
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