UDC

581.93

Authors

Burova Natal’ya Viktorovna
Northern (Arctic) Federal University named after M.V. Lomonosov Lomonosov ave., 4, Arkhangelsk, 163002, Russian Federation;
e-mail: natalyaglasova@yandex.ru

Abstract

The paper presents the results of the typological analysis of the aboriginal fraction of coenoflora of vascular plants of spruce forests in Arkhangelsk region. Geographical, biomorphological and ecocoenotic structures of coenoflora are analyzed. Species belonging to the boreal latitudinal group predominate (73.7 % of coenoflora). Arctic species are poorly represented (7.7 %). Nemoral and borealnemoral species have a relatively high proportion (9.7 %). The Eurasian group prevails among the longitudinal groups (51.3 %). The Circumboreal (16.7 %) and Eurasian-American (16.0 %) longitudinal groups are widely represented. Only four species are noted in the plurimeridional group. Species of boreal Eurasian flora element are the basis of spruce forests coenoflora. The element determines the general geographical character of flora. Spruce forests coenoflora has quite high biomorph diversity. Perennial grasses are the basis of spruce forests flora (79.0 %). The groups of long rhizomatous and short rhizomatous plants are defined among them (26.7 and 23.0 %, respectively). The share of one- and biennials accounts for only 8 species. The eco-coenotic structure is characterized by a predominance of boreal species, which account for 28.3 % of the aboriginal fraction. The group of nemoral species is relatively well represented (10.3 %). The tundra-arctic group has the smallest number of species (3.0 %). A high proportion of representatives of the meadow-steppe group (19.0 %) is associated with the study of cutting and recreational spruce forests, which are characterized by a large share of grassland species in comparison with natural spruce forests. The spruce forests coenoflora is characterized by typical for the boreal communities geographical, biomorphological and eco-coenotic structures that are close to the structure of the flora of Arkhangelsk region. Despite the significant anthropogenic impact, spruce forests are characterized by low rates of flora transformation.

Keywords

coenoflora, analysis of flora, geographical analysis, biomorphological analysis, eco-coenotic analysis, spruce forest

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