Flora of vascular plants of Sobachye Lake (Yt-Kyuel) vicinities, Putorana Plateau (Northern Middle Siberia)

摘要

The flora of vascular plants in the vicinities of Sobachye Lake (Yt-Kyuel), Putorana Plateau (North Middle Siberia) comprises 272 species (9 species are represented by 2 subspecies) from 133 genera and 45 families. By the ratio of latitudinal and longitudinal elements, it belongs to the northern Asian alpine-forest floras. The latitudinal elements (boreal, hypoarctic and arctic plants) and the longitudinal elements (circumpolar and Asian) are equally represented, which is in accordance with the location of the territory at the boundary of the tundra and the boreal zones. Along the altitudinal gradient from the forest to the goltsy belt, the number of species, genera and families decreases 10, 6 and 3 times, respectively. From the base upwards, theboreal species decrease 7 times in number, the hypoarctic species decrease 2.5 times, while the arctic and the arctoalpine plants are evenly distributed.