A STRUCTURAL PECULIARITY OF VEGETATIVE CO VER IN FOREST TUNDRA

Structural peculiarities of vegetative cover in the forest tundra comm unities are considered by the example of thin forests and frays of the Ary-Mas large forest in Taimyr Peninsula. In addition to thinness of the wood floor, high structural heterogeneity is the specific feature of these vegetative communities. Their mosaic and complex pattern is d ue, on the one hand, to changes in the environmuntal factors (microcli matic and microedaphic distinctions from the neighboring regions of ve getative communities), and on the other, to weak interfloor relations and relative independence of the vegetative floors. This leads to inte rpenetration of the forest and tundra structural elements within the f orest tundra vegetative communities, which rearranges their internal r elationships and leads to appearance of novel structures.