TY - JOUR AU - Korshіkov, I. I. AU - Petrushkevych, Y. M. AU - Shevchuk, N. Y. PY - 2021/12/28 Y2 - 2024/03/29 TI - Expansion of tree and shrub plant species into undisturbed steppe phytocenoses JF - Journal of Native and Alien Plant Studies JA - JNAPS VL - IS - 1 SE - DO - 10.37555/2707-3114.1.2021.247571 UR - http://mchr.sofievka.org/article/view/247571 SP - 160-165 AB - <p>The article is devoted to the study of tree and shrub plant species that spontaneously invasively colonize anthropogenically undisturbed steppe ecosystems. The species composition, number and biometric characteristics of tree and shrub plant species are determined. It was established that there are 22 species, among which 8 show the greatest invasive activity, in 6 studied natural beams. These are: <em>Cotinus coggygria </em>Scop., <em>Crataegus fallacina </em>L., <em>Prunus divaricata </em>Ledeb., <em>Prunus stepposa </em>Kotov, <em>Pyrus communis </em>L., <em>Rhamnus cathartica </em>L., <em>Robinia pseudoacacia </em>L., <em>Ros corymbifera </em>Borkh. According to the Serensen index of species composition of tree and shrub plants, comparing the slopes of beams of different exposures, it was found that steppe tracts have different similarities between the slopes, but the highest figure was observed for Balka Demurynа (80%).</p> ER -