Vital State of Tree Stands and Undergrowth of Virgin Spruce Forests in Submountain Regions of the Urals of the Basin of Upper Pechora
K. S. Bobkova, E. A. Robakidze, E. P. Galenko
Keywords: reserve, virgin spruce forests, monitoring, vital state, tree stand, undergrowth
Pages: 271-280
Abstract
The state of trees in five types of virgin spruce forest at the territory of the Pechoro-Ilych biospheric reserve was investigated. It was revealed that mature stands of bilberry and fern wood sorrel spruce forest types are characterized on the basis of the vital state of trees as the "healthy forest stand" with the damage index 0,03 to 0,50. The tree stand of polytric spruce forest with the damage index 0,7 relates to the category of "weakened tree stand". Reforestation process is expressed in all the types. The undergrowth accounting for 1,5 to 4,3 thousand sp. ha-1 consists mainly of conifers and is healthy.
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