The study of alien species, including invasive or potentially invasive ones, has been one of the important areas of fundamental and applied work in recent decades. The aim of our work was to identify alien species of woody plants in the natural communities of Almaty region, alien and invasive species saturation of the study region and to evaluate their potential invasive aggressiveness. The objects of research were the natural ecosystems of the Almaty region, confined to the Balkhash-Alakol and Zhongar-Alatau floristic districts. 37 species of alien woody plants have been identified in natural ecosystems, including two transformer species and 22 aggressive species with the ability to naturalize with a high capacity for seed and vegetative reproduction.

I.V. Khusainova, G.T. Sitpaeva, V.A. Masalova, I.V. Babay, S.V. Nabieva, A. Abdukhadir, N.E. Zverev, V.G. Epiktetov