SPECIES COMPOSITION AND CONDITION OF tree plantations in GARDENS IN DOWNTOWN OF VYSHGOROD t. (KYIV REGION)
DOI:
https://doi.org/10.31548/dopovidi2016.06.027Keywords:
tree and shrub plantations, species, age, condition, ornamental stateAbstract
The tree and shrub plantings in gardens in downtown of historic small town Vyshgorod of Kiev region has been investigated. The species composition of tree and shrub plantings at the gardens territory, share of presence and class of durability of tree species were defined. In the gardens are dominated young 10-year landings (41.6% of the trees), 50-year-old (27%) and 40-year-old trees (11.9%). The proportion of 60-70-year-old trees is 12.5%. Was found, that the most common type of tree species (coefficient of presence 1.0) is Aesculus hyppocastanum. The best condition (at excellent) and the highest ornamental state have decorative forms of Thuja occidentalis, Juniperus sabina. The worst condition is characterized Populus nigra trees over 60 years. Middle class durability of tree plants in plantations - 2.4. The second class durability owns 41.7% of trees, the third - 50.3%.
Simpson ratio, which used as a measure of species biodiversity (SDI), to planting gardens is 9.2. The species composition of shrub plantings is very poor, has six species. Generalized ratio of trees and shrubs in the gardens is 2:1 that is far from standard. All gardens require additional input bush plants to achieve the standard value. The species composition of tree and shrub plantings in gardens expedient to expand by using of resistant ornamental species.
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