乌克兰基辅市区城市植物区系外来部分的分类组成动态

Pub Date : 2024-06-01 DOI:10.2478/environ-2024-0013
S. Koniakin, R. Burda, V. Budzhak
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引用次数: 0

摘要

摘要 本文介绍了对基辅市区(KUA)城市植物区系中外来部分近期分类组成的调查结果。文章强调了过去 20 年中植物区系的主要动态趋势,以及最可能的植物入侵威胁。所得到的线性回归方程可以预测外来植物物种在基辅城区扩大(r=0.53)和人口数量增加(r=0.87)的背景下的增长情况。基辅地区城市植物区系的外来部分包含 717 个维管束植物分类群(668 个种、41 个亚种、6 个变种、1 个形态和 1 个非形态)。在过去 20 年中,昆士兰大学城市植物区系的物种数量至少增加了 166 个外来分类群,其中一些是我们植物区系中新属、新科和新目的代表。昆士兰大学城市植物区系中外来物种分类结构的丰富导致了生命形式比例、生态类型、物种入侵性和其他特征的变化。我们明确了可能的入侵威胁,其条件是形成新的木本物种群、能够快速积累植物体的水生植物、涉及外来物种和本地物种的一些复合种属,这些物种有杂交的倾向。
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The dynamics of the taxonomic composition of the alien fraction of the urban flora in the Kyiv urban area, Ukraine
Abstract This article presents the results of an investigation into the recent taxonomic composition of the alien fraction of the urban flora in the Kyiv urban area (KUA). Its main dynamic tendencies over the last 20 years have been highlighted, along with the most probable phytoinvasive threats. The obtained linear regression equation allowed forecasting for the growth in the abundance of alien plant species against the background of the enlargement of the Kyiv urban area (r=0.53) and its human population numbers (r=0.87). The alien fraction of the urban flora of the KUA contains 717 taxa of vascular plants (668 species, 41 subspecies, 6 varieties, 1 form and 1 nothoform). In the past 20 years, the number of species of the urban flora of the KUA has increased by at least 166 alien taxa, some of which are representatives of new genera, families, and orders for our flora. This enrichment of the taxonomic structure of the alien fraction in the urban flora of the KUA has caused changes in the ratio of life forms, ecotypes, invasiveness of species, and other features. We specified probable invasive threats, conditioned by the formation of the group of new woody species, hydrophytes capable of rapidly accumulating their phytomass, some genera complexes involving alien and local species, which are inclined to hybridization.
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