The Spatial Structure of the Plant Cover of Mires in the North-Western Arkhangelsk Region (Case Study of the Vetreny Poyas Range)
The results of the 2017–2019 years study of mires in the northwestern Arkhangelsk Region, including north- and south-facing slopes of the Vetreny Poyas Range and White Sea Lowland, are reported. The mires of the landforms of the model territory are described. Changes in the spatial structure of the plant cover of the mires were revealed. The Vetreny Poyas range was shown to be the southern boundary of mires of dystrophic South White Sea type. It is also the northern boundary of the aapa mires which spread from the south-facing slopes of the range and have some features indicative of a transition from Karelian to northeastern European types of aapa. The valley mires of the central ridge of the Vetreny Poyas are characterized by some distinctive regional features, and when creating large-scale zoning, the central ridge should be considered as an individual mire region. The Vetreny Poyas Range is one of the most striking examples of the effect of the orographic factor on the typological composition and geographic distribution of mires.