Silvicultural effectiveness of measures to aid to natural reneval at clearcuts in novogrudok forestry

Abstract

Appointment to promote natural renewal at clearcuts significantly increases the probability of further form a tree stand with a predominance of conifers during the systematic care. The density of undergrowth on felling surveyed ranged from 6,973 to 3,250 units per hectare, while the proportion of valuable species from 62.1 to 83.35. Self-sown crow was presented only valuable species and the amount ranged from 550 to 1,603 units per hectare. Among the identified amount of undergrowth stored when cutting ranged from 12.7 to 83.1%. The highest average number of units of undergrowth valuable species found at the projective cover grass-shrub tiers of 30–50% and projective cover moss-lichen tiers of 20–40%. The least effect on undergrowth in underforest has canopy density of 0.1 to 0.3. Carrying out loosening the soil increases the amount of undergrowth valuable species for 3–4 years in 1.9–3 times, including self-sown crow in 1.6–4.4 times.