Ukrainian Journal of Forest and Wood Science

It is shown that the 24-year-old pine plantations on the alluvial sands growing by III-V class productivity, and pine seedlings planted on an silvicultural area of in 3 years after afforestation are not able to participate in the formation of the main canopy of pine stands. Despite the fact that the survey on silvicultural areas preserved 28 % more pine saplings 21 years of age (5,1 thousands per 1 ha), their indices performance inferior to 24 years, height – 43 %; diameter – 70 %. However, seedlings 24-year-olds occupied the dominant position in the plantation. They grew by III class of productivity. Pine seedlings, representing 21 years of stand came under canopy of 24-yearold trees and rates of their growth in height only corresponded by V class of productivity. The share of biomass, which belonged to 24-year-old seedlings was 87 % and only 13 % belonged to 21-year-old seedlings, indicating that the unreasonableness of the creation of sand pine plantations with planting pine seedlings on silvicultural area of intervals 3 years and points to inefficiencies add 3-year crop of pine seedlings of 1-year-old pine.

sand, pine, seedling, sapling, biomass