AUTOCHTONOUS AND INTRODUCED DENDROFLORA OF KREMENETS BOTANICAL GARDEN

Abstract

The results of study of the current state of dendrofloraon the territory of Kremenets Botanical Garden are presented. The taxonomic composition was studied, systematic and botanical-geographical analyzes were carried out, biological and ecological features of woody plants growing and cultivated on the territory of the institution were analyzed.
According to the latest inventory, the collection fund includes 318 species and 96 cultivars of woody plants, which belong to 80 genera and are grouped into 44 families. Department Magnoliophyta dominates by the number of families – (39, 88,64 %), genera (68, 85 %) and species (337, 81,40 %). Division Pinophyta is represented by 5 genera (11.36 %), 12 families (15,0 %), 77 species (18,60 %). According to the classification of I. G. Serebriakovthe collection is dominated by trees (51,21 %), including: deciduous (44.69 %), evergreen (6.52 %). Among shrubs (45,41 %), deciduous ones (31.40 %) predominate, evergreens make up a small group (14,01 %). Semi-shrubs are represented by semi-evergreen specimens (3,14 %).
According to ecological indicators, 3 types of ecomorphs were identified: heliomorphic, hygromorphic, and trophomorphic. According to the degree of adaptation to lighting, heliophytes (238, 72,46 %) predominate in composition of the studied flora, the group of mesotrophs (156 species, 49,06 %) predominates according to the trophic indicator, mesophytes dominate among hygromorphs (287, 90,25 %). Introducers have adapted to local growing conditions and coexist well with native species. In general, natural and climatic conditions are favorable for introduction of woody plants from various floristic regions of the Holarctic. The East Asian, Atlantic-North American and Circumboreal floristic regions are the most represented. In the collections and expositions, the most represented plants are in the range from 5 to 20 years.
The staff of the Garden laid plots of the following genera complexes: Сotoneaster (Соtoneaster), Rhododendron (Rhododendron), Magnolia (Magnolia), Spiraea (Spiraea), Pinophyta (Pinophyta), and lilac (Syringa).