Properties and major element concentrations in peat profiles of the polygonal frozen bog in Western Siberia

The properties and elemental composition of the Histosols of polygonal frozen bog in Western Siberia are characterized. The study of peat soils allowed an evaluation of the effect of micro-landscape on main properties and major element concentrations. According to acid-base characteristics and the ash content, the studied soils can be qualified as oligotrophic. The soil profile shows a tendency to increase the TOC in the lower horizons, and especially, in the peat soils of the polygons. The highest average TOC, Ca, Mg, K, P, Fe, and Na concentrations in the peat profile are observed in the soils of polygons (1.2-2.2 times). A large number of phytomass and plant productivity contribute to the enrichment of soils with carbon and some elements on the polygons. In addition, the difference between the soils of polygons and hollows in terms of the thermal conditions and peat hydrophysical characteristics is reflected in their elemental composition and properties.