Indication of Environmental Conditions According to the Dendroflora Composition in Different Zones of the Pryrichkovyi Park in Poltava

The dendroflora of the Pryrichkovyi Park in Poltava and the correspondence of woody plant species composition to environmental conditions were studied by analyzing the amplitude of the leading environmental factors.Twelve species of deciduous trees have been identified, the representatives of seven genera of six families of the order Angiospermae, or Magnoliophyta. The highest Margalef index was calculated in zone 1, and the highest dominance index in zone 3. In all three park zones, 6 species of trees are represented – 2 Acer sp., 2 Populus sp., Salix alba, and Tilia cordata. The Sørensen-Czekanovsky index indicates the greatest similarity in the species composition of trees between zones 1–2 and 2–3 and the least similarity between zones 1 and 3.The lowest light index (Lc) was calculated for zone 2, where the tree density is the highest. The high-light-tolerant species – Robinia pseudoacacia and Betula pendula – grow in zone 1 (with a high recreational load). The soil moisture range (Hd) tolerance is the greatest for Populus tremulae, which is common in all three park zones. The lowest soil aeration index (Ae) in zone 1 is explained by its greatest compaction due to recreational load. The soil acidity index (Rc) increases in zone 3, where willows and poplars grow.Analysis of the ecological amplitudes of certain indicators confirms that environmental conditions in all park zones are favorable for the majority of presented tree species. Therefore, the analysis of the environmental amplitudes is recommended to use when assessing new species for planting. The data obtained make it possible to continue the study of the condition of the most common tree species and resistance to natural and anthropogenic factors of their damage and injury, in particular, recreation, vehicle emissions, phytophagous insects, and pathogens.