СТРУКТУРА РОСЛИННИХ ЕКСПОЗИЦІЙ КРЕМЕНЕЦЬКОГО БОТАНІЧНОГО САДУ

The findings of the systematic analysis of Kremenets Botanical Garden displays are given. For the purpose of maintaining, optimizing and arranging plant compositions, the ecological and biomorphological features of species have been clarified. The flora of botanical expositions includes 272 species of 3 divisions, 5 classes, 66 families, 138 genera. The systematic analysis demonstrated a numerous representation of the Magnoliophyta division by the number of families (56, 84.9 %), genera (120, 87.6 %) and species (205, 75.4 %), of which Magnoliópsida contains 172 species (63.2 %), with Liliopsida containing 33 species (12.1 %). The Pinophyta division is represented by 6 families, 13 genera, and 62 species (22.8 %). The Polypodiophyta division has smaller numbers – 4 families, 4 genera, and 5 species (1.8 %). According to Ch. C. Raunkiær’s classification, decorative cultures are present in 5 life forms. The Phanerophytes play a significant role in the expositions’ design; their percentage is 48.1 % (131 species). According to the classification of I. G. Serebriakov in the structure of display there are 8 types, which are dominated by herbaceous plants (89 species, 32.7 %). According to ecological indicators, 5 types of ecomorphs have been identified: the heliomorph, the hygromorph, the thermomorph, the acidomorph, and the tropomorph. Among them heliophytes (165 species, 60.7 %), mesophytes (97 species, 35.7 %), microthermophytes (265 species, 97.4 %), subacidophiles (96 species, 35.3 %), and mesotrophs (230 species, 84.5 %) are dominant. It is established that the displays on the territory of the Botanical Garden are stable cultural phytocenoses (or close to that), which function in specific conditions. For the purpose of optimizing botanical expositions, it is advisable to expand the range of ornamental plants.