Soil cover of moraine plains of the northern taiga is represented by podzolic- hydromorphic arborescent combinations and spotted complexes (by V.M.Fridland) of podzolic,boggy-podzolic, and boggy soils. Boggy-podzolic (Albaqualfs - on the USA taxonomy, Eluviated Gleysoils - on Canada classification) soils are the dominant component with profile 01-02-Awa- Elg-Bt(g)-C(g). These soils are of superficial moistening. They have the peat litter (01+02) with depth of 10-30 sm, acid up to strongly acid profile reaction (pH<5.0) low saturation degree of soil absorphing complex by foundations; more poor chemical composition in the upper part of the profile, then in lower part. Granulometric composition in Elg horison is from light to average loamy,Bt(g) horizon - from heavy loamy up to claysh. Elg horizon has a thixotropic character during long time, does'nt contain roots.
Regular dependance of humus distribution nonsilicious ferrum, silt in soils from the degree of their hydromorphism and microrelief was emerget by the detailed investigations of the soil cover key spots in sprouce forest in the Pechora River Bassin. It implies gradually accumulation of humus in Awa horison from 1.5 up to 6-8% ; transformation of maximun in distribution of nonsilicious ferrum from Elg horizon to 02 and horizons, change of eluvial distribution of silt to accumulative eluvial ones, ith in transportation from autonomous sites of microcatens to accumulative ones.
On the bases of the emerged relations of the mentioned soil properties with microrelief and peculiarities of soil physical properties a hypotheses is put forward abaut significant lateralic redistribution of matters between upper horisons of the given soils and abaut influence of strong winds on it, that through the root systems of frees lead thixotropic horizons floating moveable state.
Dr Gennady M. Vtyurin The Soil Science department Institute of Biology Komi Scientific Centre Ural Division of the Russian Academy of Sciences St. Kommunisticheskaya 28 Syktyvkar, 167610, Russia Phone: 42-15-51. Fax: 8212 420163 E-mail: biol@omkomi.intec.ru