As a result of long-term monitoring, it was established that the alien dendroflora of the Lower Amur region is represented by 27 species. All species are refugees from culture. For each species, the degree of naturalization is established on a nine-point scale. Four species are invasive (Acer negundo L., Hippophaё rhamnoides L., Parthenocissus inserta (A. Kerner) Fritsch., Prunus tomentosa Thunb.) and four species (Amelanchier spicata (Lam.) C. Koch, Rosa×rugosa Thunb., Populus alba L., Ulmus pumila L.) are potentially invasive. The remaining species, due to their biological characteristics, do not pose a threat of biological pollution. The emergence of new potentially invasive species is associated both with the cultivation of ornamental and fruit-bearing trees and shrubs by the population, and with urban landscaping.

L. А. Antonova