Abstract
This paper presents the results of investigations on natural forest regeneration in Norway spruce (<i>Picea abies</i> L. Karst.) monocultures in the Ukrainian Beskids with the use of FORKOME model prognostic possibilities. Different variants of regeneration methods are presented. Selective cutting with planting was determined as the most effective: spruce selective cutting with simultaneous planting of target species: beech (<i>Fagus sylvatica</i> L.) and fir (<i>Abies alba</i> Mill.) with admixture of ash (<i>Fraxinus excelsior</i> L.). Beech and fir biomass increases rapidly over the first 20 years &minus; then it stabilizes. After another 20&minus;30 years the initial form of beech forest is recognizable and it is possible to speak about an increase of beech forest, which in the course of time achieves a higher degree of similarity to natural stand. In the Ukrainian Beskids the potential forest stand consists of beech and fir (<i>Dentario glandulosae-Fagetum<i>).
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