Spatiotemporal dynamics of forest-tundra communities in the polar urals

摘要: The spatiotemporal dynamics of forest-tundra communities in the 20th century have been studied timberline ecotone Polar Urals. Maps reflecting distribution different types made, and data on morphological age structure tree stands obtained for three time sections (the mid-1910s, 1960s, 2000s). They show that open closed forests markedly expanded due to natural afforestation tundra increase density productivity existing forest stands. unidirectional pattern plant community transition (from forests) meteorological provide evidence this has conditioned by climate warming increasing humidity recorded during past 90 years.