Rheological studies show that the coagulation structure of the investigated soils has weak structural links. Gleezems are the most vulnerable soil objects, and different types of physical impact will contribute their solifluction and erosion. Close permafrost underlaying is also an important factor, affecting these soils. Its response on the physical impact will contribute intensification of thermokarst phenomena. We found, that different forms of organic matter play a significant stabilizing role in the soils of Subpolar Urals, including undecomposed plant residues and organic-mineral compounds that are accumulated in the illuvial layers.