Dynamics of the geographical structure of coenofloras during the forest formation process in the Polar Urals
In the tree line ecotone at the Polar Urals, the vegetation of tundra with single larch trees (mountain tundra belt) and larch woodlands (light forest belt) is represented by complex communities - a combination of tundra and forest plots. Biomorphological analysis of these plots' species composition showed the presence of a similar set of life forms groups. Woody plants (bushes, shrubs, and semi-shrubs) are represented by 22 species from nine families; the group of herbaceous plants - by 79 species from 28 families. Spatial heterogeneity of the species diversity is mainly due to the features of the herbaceous plants group. There are clear changes in the geographical structure of species lists on the slopes of different exposures, as well as differences in the composition of plant communities at different stages of the forest formation process. In the general species list (101 species from 36 families), the proportions of latitudinal geographical fractions are approximately equal.