The scheme of larch ecosystems’ (Larix gmelinii (Rupr.) Rupr.) classification elaborated for low mountainous Syverma plateau is considered. It in-cludes 25 the main regional larch ecosystems joined into 8 groups: lichens, bearberries, lichen green moss, green moss, herbal, red berries, moss and sphagnums. Such typification of the habitats’ (ecotypes') features as well as on the vegetation features mainly dominating trees and dominant species of the subordinate layers in the plant eco-system. Each larch types’ group occupies a definite landscape area with unique environments indicated by larch ecosystems’ dominants. In the region stud-ied they are as follows: the lichens (Cladonia spp., Cetraria spp.), crowberry (Empetrum nigrum), bearberry (Arctostahylos uva ursi), green mosses (Pleurozium schreberi, Aulacomnium turgidum, Hylocomium splendens), duschekia (Duschekia fruticosa), red berry (Vaccinium vitis idaea), ledum (Ledum palustre), bog whortleberry (Vaccinium uliginosum), dwarf birch (Betula nana), sphagnum mosses (Sphagnum spp.). Being arranged in such order the dominants indicate the gradient of soil moisture: dry stony, sandy and sandy loam, loamy moderate wet, wet drained, over moisten, damp with stagnant water. Conducted studies are useful for the resources’ evaluation of larch ecosystems, their environmental and biogeochemical investiga-tions as well as for the research of the vegetation’ ecological parameters and its ordination in cryolithozone of Siberia.
Gmelin larch, cryolithozone, larch ecosystems types, groups of types
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