The effect of different sanding methods on the biological activity and gasregime of drained peat soils

Altering the hydrothermic regime of drained low-moor peat soils by applying different doses of sand (covering and mixed systems) intensifies their bio logical activity within the upper l-m-thick layer, compared to traditional management. This is accompanied by a sharp rise in cellulose decomposition, proteolytic activity, the production of carbon dioxide, and the accumulati on of free amino acids. Sand application increases the loss of peat organic matter by 18-28% via the CO2 emission from the soil surface to the atmosph ere, The measures on the conservation of organic matter in peat soils and c ontrol of degradation are discussed.