The species composition of alien plants found in the flora of 15 pine forest outliers in the Chelyabinsk region was analyzed. A total of 122 alien species from 36 families were identified in pine forest communities. According to the method of immigration, most alien plants in pine forests are xenophytes. Based on the time of introduction, all identified alien species are neophytes (euneophytes); according to the degree of naturalization, the largest group is epecophytes (72 species). It has been established that the alien component of the flora of forest outliers is most rich in species of the families Rosaceae, Asteraceae, Chenopodiaceae and Fabaceae. In all pine forests, 39 invasive plant species were identified, among which woody plants predominated (16 species), annual grasses were represented by 12 species. The majority of alien species originate from North America – 35 species, 28.7 %; Asian species account for 34 species, 27.9 %.

V.V. Merker