Self-restoration of woody plants in the conditions of the Botanical Garden of Dnipro National University
It is impossible to overestimate the importance of parks in large industrial cities. The problem of preservation of local flora together with cultivation of introduced species is more actual. The species composition of seed self-restoration of woody plants in the forest park and park parts of the Botanical Garden of Oles Honchar Dnipro National University was analyzed in order to determine the ratio of introduced and autochthonous species and whether the introduced species pose a threat to aboriginal flora. Quantitative and qualitative state of seed self-restoration determined. As a result of the research it was established that in the forest-park and park zones of the Botanical Garden artificial stands are capable of forming a sufficient number of viable undergrowth of autochthonous and introduced species, among which mainly aboriginal species dominate. The ratio of indigenous species to introduced ones in different parts of the park and forest park is 57–76 % and 24–43 %, respectively. There is no special competition between indigenous and introduced species. Each species of woody species has adapted well to the conditions of the ecotope and to the conditions of its place of growth. Bioecological features of wood species in the plantations are not an obstacle to the development of the internal space of the ecotope, but 43 % of self-regenerating woody plants in trial area 1 are introduced species, so further observation is needed.
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