SOME STAGES OF DEVELOPMENT OF VIRGIN BEECH FORESTS AND THEIR DYNAMICS

I.M. Yanovska

Abstract


According to the forest inventory statistics, the total area of the Uholskyy-Shyrokoluzhanskyy massive of virgin beech forests is 11199.4 hectares; its wood volume is 5220.75 thousand mand altitude – 601-1000 meters above sea level (73 % of the area). The predominant forest types are wet pure common beech megatroph (63 %) and wet pure common beech mezotroph forest types (18 %). Within the 10 years of research, performed in the massive of 10 hectares in the virgin beech forest, it is still constantly changing (evolving) in spite of very similar characteristics. Maturing is the dominant development stage of this virgin forest massif, which was prevailing in 2000, while in 2005 and 2010 its share remained unchanged. Total 2000‑2010 dynamics of the virgin forest massif has a tendency to "aging", i.e. increasing of the share of plots close to maturing, maturity and decline, nevertheless it was observed that wood volume and undergrowth density have a tend to decrease.

Keywords


Virgin Beech Forest; development stages; type of diameter distribution; wood volume; natural regeneration; massif dynamics

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