NDLI: Temperature regimes of northern taiga soils in the isolated permafrost zone of Western Siberia

Content Provider	Springer Nature Link
Author	Goncharova, O. Yu. Matyshak, G. V. Bobrik, A. A. Moskalenko, N. G. Pomareva, O. E.
Copyright Year	2015
Abstract	Soil temperature regimes were studied in three ecosystems of the north of Western Siberia in the zone of isolated permafrost: the forest ecosystem with gleyic loamy sandy podzol (Stagnic Albic Podzol), the flat-topped peat mound ecosystem with humus-impregnated loamy sandy to light loamy peat cryozem (Histic Oxyaquic Turbic Cryosol (Arenic)), and the peat mound (palsa) ecosystem with oligotrophic destructive permafrost-affected peat soil (Cryic Histosol). Annual temperature measurements in the soil profiles demonstrated that these soils function under different temperature regimes: very cold permafrost regime and cold nonpermafrost regime. The following annual temperature characteristics proved to be informative for the studied soils: sums of above-zero temperatures at the depths of 10 and 20 cm, the maximum depth of penetration of temperatures above 10°C, and the number of days with daily soil temperatures above (or below) 0°C at the depth of 20 cm. On the studied territory, the insulating effect of the snow cover in winter was at least two times more pronounced than the insulating effect of the vegetation cover in summer. Cryogenic soils of the studied region are characterized by the high buffering towards changing climatic parameters. This is explained by the presence of the litter and peat horizons with a very low thermal diffusivity and by the presence of permafrost at a relatively shallow depth with temperature gradients preventing penetration of heat to the permafrost table.
Starting Page	1329
Ending Page	1340
Page Count	12
File Format	PDF
ISSN	10642293
Journal	Eurasian Soil Science
Volume Number	48
Issue Number	12
e-ISSN	1556195X
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-12-09
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	annual soil temperature characteristics climate change cryogenic soils thermal diffusivity peatlands N-factor Stagnic Albic Podzol Histic Oxyaquic Turbic Cryosol (Arenic) Cryic Histosol Geotechnical Engineering & Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Soil Science

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