Hydrothermic regime, dynamics of organic matter and nitrogen in drained peaty soils at different sanding modes

The rate of biochemical decomposition of organic matter in drained peaty soils has been studied for the black, sand-mixed, and sand-mantled farming systems with a concurrent analysis of hydrothermic conditions. The maximum depletion of peat was observed in the plow horizon for the black system and i...

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Bibliographic Details
Published in:Archiv für Acker- und Pflanzenbau und Bodenkunde 2000-03, Vol.45 (2), p.123-142
Main Authors: Zaidelman, F. R., Shvarov, A. P.
Format: Article
Language:English
Subjects:
Biochemical decay
Biochemischer Abbau
degradation
peat decomposition
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Summary:The rate of biochemical decomposition of organic matter in drained peaty soils has been studied for the black, sand-mixed, and sand-mantled farming systems with a concurrent analysis of hydrothermic conditions. The maximum depletion of peat was observed in the plow horizon for the black system and in the plow and subplow horizons for the mixed system. For the sand-mantled system, two maximums were found for the biochemical decomposition of organic matter (in the plow horizon and in the zone of the open capillary fringe). Sand-mixed and sand-mantled cultures enhance the biochemical depletion of peat. An accelerated decomposition of the peat organic matter after addition of sand results in increasing the content of mobile nitrogen in soil and ground waters. Protection against the degradation is associated with control of the ground water table.
ISSN:0365-0340
1476-3567
DOI:10.1080/03650340009366117