Sietland
The Sietland is the part of the march between the coast or river bank and the Geestrand , which is deeper than the high tide .
The march is divided into two parts by different sedimentation conditions. There is more sedimentation near the shore than further inland, and a highland with sandy soils forms near the shore. In contrast, in the Sietland behind, hardly any further sedimentation took place, clayey soils formed that sagged faster than the sediments of the highlands. There could be a difference in level between the highlands and the Sietland of several meters. The deepest parts of the Sietland, mostly on the Geestrand, had no drainage. The water collected here, these parts swamped and bogs formed . The rest of the Sietland was often overgrown with quarry forest.
Today, the Sietland has mostly been made arable through dikes and drainage , for example through elder colonization . The diked Sietland sinks even further over time due to the drainage, so that today the soil can sometimes be below sea level.
literature
- Richard Pott: The North Sea. A natural and cultural history, Verlag CH Beck, Munich 2003, ISBN 3-406-51030-2 .
- Hans-Günter Gierloff-Emden: Textbook of general geography. Volume 5, Part 2, Geography of the Sea - Oceans and Coasts, Walter de Gruyter, Berlin / New York 1979.
- A. Lax, Werner Haarnagel, Lower Saxony State Institute for Marsh and Wurten Research: Problems of coastal research in the southern North Sea area. Volume 26, 1999, ISBN 978-3-8959-8703-8 .
- Harms Stillahn: The marshes of Oldenburg and their economic use. Sussmann, 1919.