Waterlogging
Waterlogging means a prolonged wet phase by rain or flooding. In rooted soil, this can lead to a lack of air and symptoms of reduction.
meaning
Regular watering changes the geomorphology of a soil. It leads to the formation of hydromorphic features such as the typical rust spots (“marbling”) in the soil and / or the formation of a reduction horizon with a gray to almost black color. Wetting can occur through groundwater , backwater , hillside and adhesive water . Soils that are regularly wetted by groundwater are summarized as semiterrestrial soils . In contrast, dammed and wet soils are terrestrial soils . Probably the most important classes with wetting are gleye and pseudogleye. In addition, marshes and floodplain soils are also housed in this area. Moors are not wet in this sense, but form a separate department (bog soils). Peat and bog soils are constantly releasing carbon dioxide into the environment. In order to prevent this and to bind the gas, peatlands are flooded.
In order to prevent the negative consequences of waterlogging in cultivated soils or to make wet soils usable at all, drainage or drainage ditches are created. The drainage network must be narrower on pseudogleyen than on gleyens for effective drainage. In the restoration of a habitat - in rivers or bogs - a soil can be brought about deliberately as an ecological measure, the water logging. As a result, trees die in the waterlogged area. The water balance of the soil and the vegetation change permanently.
literature
- Diedrich Schroeder : Soil science in brief. Hirt, Kiel 1969 ( Hirt's key word books ).
- Karl Heinrich Hartge : Introduction to Soil Physics. Enke, Stuttgart 1978, ISBN 3-432-89681-6 .