. Plant communities dominated by the invasive species Galega orientalis, common in natural and anthropogenic habitats, have been identified in Kursk Region. On anthropogenic ecotopes (wastelands, roadsides), phytocoenoses of the ass. Galigetum orientalis are formed as a result of introduction of Galega orientalis into communities of the order Agropyretalia intermedio–repentis (class Artemisietea vulgaris). In natural habitats, Galega orientalis spreads in mesophylous meadow communities (order Arrhenatheretalia, class Molinio-Arrhenatheretea), while derivative communities Galega orientalis [Arrhenatheretalia] are formed. Galega orientalis is unevenly present in derivative communities, forming separate loci, as a result, its cover is less intensive than in anthropogenic communities. It may be due to a more intensive distribution of this species in disturbed habitats. Comparison of ranges of values of environmental factors showed that derivative communities are formed in wetter habitats. Phytocoenoses of the association are characterized by wider variation in values of acidity and richness of soils in mineral nitrogen.
Geobotanical survey and classification of communities of oak plantations of the city of Kursk has been carried out. The described phytocoenoses are attributed to the non-rank community Fraxinus pennsylvanica–Quercus robur within the order Carpinetalia betuli, whose species are most represented in the coenoflora of this syntaxon. Variants with thr differences in the species composition and habitat conditions have been established in the community: typica, Lonicera caprifolium, Robinia pseudoacacia. Lonicera caprifolium is dominant in the phytocoenoses of var. Lonicera caprifolium and has the characteristics of an aggressive invasive plant. It forms a dense cover in the grass layer and suppresses shrubs and woody growth. Communities of var. Robinia pseudoacacia are characterized by a high closeness of the crowns of the shrub layer formed by Robinia pseudoacacia. The grass layer in them is poorly developed due to the allelopathic effects of this invasive species. The conducted research makes it possible to assess the current state of the artificial forests of the city of Kursk and monitor changes in their composition and structure.
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