Abstract
The processes of natural reforestation play a crucial role for the preservation of primary coniferous forests and the success of their restoration after catastrophic impacts. The objective of our research was to identify the features of the natural renewal of the main coniferous forest-forming plants under the canopy of stands in the mountains of the Middle Urals, to establish dependencies on the forest type not only the total number of tree saplings, but also its age structure. The research was carried out in the mountainous part of the Sverdlovsk region (Russia) on the eastern macroslope of the Ural Mountains. We studied old-age pine forests, which belong to the 4 most common forest types. The tree saplings were counted into account on 2-4 subplots with a length of 20 meters and a width of 2 meters. It is established that under the canopy of all types of forest there is a different age coniferous saplings, despite significant differences in habitats. The most abundant pine saplings are found in pine forests withVaccinium vitis-idaea, and the most abundant spruce saplings is found in pine forest with spruce and moss cover.
Highlights
The progressive human impact on natural ecosystems on all continents and undesirable climate changes reduce the stability of the biosphere and lead to threats of local and global environmental crises [1]
As shown by the results of research, old-age – pine forests with Vaccinium vitis-idaea are characterized by abundant pine young growth of different ages (Fig. 2a)
Abundant renewal of pine trees of different ages is noted in berry pine forests
Summary
The progressive human impact on natural ecosystems on all continents and undesirable climate changes reduce the stability of the biosphere and lead to threats of local and global environmental crises [1]. Forest ecosystems are recognized as one of the main factors that can reduce the undesirable consequences of these impacts and maintain the biosphere in a stable state [2, 3]. The problem of primary forest conservation is recognized as extremely urgent. The processes of natural reforestation play a crucial role for the preservation of primary coniferous forests and the success of their restoration after catastrophic impacts [1]. The processes of natural regeneration, which have their own characteristics in different regions and types of forest, are not fully understood
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