A grid mapping of the distribution of Impatiens glandulifera Royle in settlements near the source of the Angara River (Lake Baikal) has been carried out. The uneven participation of the invasive species in the composition of plant communities was noted, the projective coverage ranges from 30–40 % to 10 %. The total area of invasion is 578.5 hectares, the share of physiognomically and coenotically transformed sites accounts for 318.76 hectares. The data obtained can serve as a starting point for monitoring the state of plant communities and assessing the invasive activity of I. glandulifera.

А.V. Lishtva, A.V. Dinkel