COMPOSITION AND INVASION ACTIVITY OF WOODY PLANTS IN THE BOTANICAL GARDEN OF THE URAL BRANCH OF THE RUSSIAN ACADEMY OF SCIENCES

The study was carried out on the territory of the Botanical Garden of the Ural Branch of the Russian Academy of Sciences. The collection revealed 61 species from 37 genera and 20 families of woody plants that have become naturalized and have gone beyond the expositions. The highest rate of naturalization was observed in the Rosaceae , Sapindaceae and Oleaceae families. The capacity for naturalization was demonstrated by plants with Asian (19 species), Eurasian (17 species), North American (14 species) and European (5 species) distribution range. In terms of life-forms, among the naturalized species, may be divided as follows: trees - 34 species, 55.7 %, shrubs - 24 species, 39.3 %, lianas - 3 species, 5 %. Most of the naturalized species (85 %) are characterized by a very low occurrence on the territory of the arboretum and forest area in Botanical garden. Only 9 species of woody plants have maximum occurrence rates: Acer negundo, A. platanoides, Berberis vulgaris, Corylus avellana, Cotoneaster lucidus, Juglans mandshurica, Malus baccata, Quercus robur, Ribes rubrum .