Rambla (floor type)
The Rambla (outdated: Auenlockersyrosem ) is a soil type in class A ( floodplain soils ) of the department of semiterrestrial soils and is abbreviated to AO in soil science. The name is derived from the Spanish Rambla (stream bed). The Rambla is the bottom of the fresh river sediments and occurs mainly in the upper reaches. With the changing floods, new sediment layers are constantly being formed, which can differ in features such as soil type and skeletal content . These differences can usually be recognized as distinctive layer boundaries. Within the floodplain soils, the Rambla roughly corresponds to the loose syrup of terrestrial soils. It is therefore a raw floodplain in which hardly any weathering has taken place and, apart from a thin and often discontinuous humus accumulation horizon, hardly any horizons are discernible.
In the international soil classification World Reference Base for Soil Resources (WRB), most rambles belong to the fluvisols . If they are strongly skeletal, however, they are Leptosols , and if there are high sand contents in the entire profile, they are Arenosols .
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 .