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| 1 | The article presents the study of physical, chemical and morphological properties of pyrogenic peat soils for example three cuts in the eutrophic fen Tagan. It is located on the second terrace above the floodplain of the river Tom, ancient stream of flow/hollow of flow. It was revealed that pyrogenic gorizons have changes in the morphological structure. After pyrogenic effect we observed changes of physical and chemical properties: the increase in ash, phosphorus and potassium in the surface horizons. Keywords: peat fen, fires, pyrogenic layer, physico-chemical properties, morphological profile, protection reserves | 874 | ||||