TEMPERATURE STATE OF SOILS OF PEAT PLATEAUS IN THE SPORADIC PERMAFROST AREA (EUROPEAN NORTHEAST OF RUSSIA)
D.A. Kaverin, A.V. Pastukhov
Institute of Biology, Komi Science Center UB RAS, 28, Kommunisticheskaya str., Syktyvkar, 167982, Russia; dkav@mail.ru
The thermal regime of soils and underlying sediments in peat plateaus located in the northeastern margin of the Russian Plain (65–66° N) in the area of sporadic permafrost distribution has been characterized for the period of 2013–2016. The winter, summer and mean annual temperature regimes are found to differentiate significantly between soils in permafrost peat mounds and thawed fens. The warming and cooling coefficients have been evaluated in order to assess the seasonal variations of temperature in soils of peat plateaus. A comparative analysis of the calculated warming/cooling climatic coefficients and indices revealed the warming effect of the contemporary climatic variations on peat soils within the area of sporadic permafrost distribution in the north-east of European part of Russia.
Soil temperature regime, peat plateaus, sporadic permafrost distribution