Dy (soil type)
Dy [dü] is a brown sludge soil consisting of vegetable detritus with algae residues. It is poor in nutrients and forms on acid parent rock. Dy shows a strong loss of oxygen and contains many flocculated and dissolved humus substances . It belongs to the class J soil types (subhydric soils). The shape of the bottom belongs to the so-called Mudden . In the international soil classification World Reference Base for Soil Resources (WRB), this soil belongs to the Gleysols with Subaquatic Qualifier.
In water bodies, Dy is a loose brown to black mud, the typical sediment form of nutrient-poor and humic acid-rich still waters, so-called dystrophic lakes.
The term goes back to a Swedish name and was introduced into scientific literature by Hampus von Post in 1862.
supporting documents
- ↑ Jürgen Schwoerbel: Introduction to Limnology. Gustav Fischer Verlag, Stuttgart, Jena 1993.
- ↑ Hampus von Post (1862): Studier öfver Nutidens koprogena Jordbildningar. Kgl. Svenska Vetensk. Akad. Handl. 4 vol. No. l.
literature
- W. Amelung, H.-P. Blume , H. Fleige, R. Horn, E. Kandeler , I. Kögel-Knabner , R. Kretschmar, K. Stahr , B.-M. Wilke: Scheffer / Schachtschabel textbook of soil science. 17th edition. Heidelberg 2018. ISBN 978-3-662-55870-6 .