Russian Federation
Features of technological processes for artificial cultivation of Siberian pine outside its natural range should be based on thorough research results of the species' specifics: biology during very long ontogenesis stages, soil ecology, growth morphology, and young stand formation. At the site, with a favorable combination of planting material placement factors, species survival was 38.9% by planting spots at 38 years of age. Regarding the variability of mensurational traits, the lowest indicators include tree height - 14.2% and diameter at breast height - 20.7%. The observed strong correlation of stem volume (V) with growth area (Sp) - 0.78 and crown projection area (Sk) - 0.55 indicates the influence of placement factors on stand productivity. For tending felling, stem diameter, correlating with crown diameter (Dkr) with a moderate degree - 0.63 and with growth area (Sp) - 0.84, can be used as a selection criterion. In cultures, 60.3% of trees bear seed, with male flowering provided by 30.1% of individuals. Considering stand development, trees are distributed into the following categories: best - 3.7%, average - 76.5%, lagging - 19.8%, indicating no strict differentiation in sanitary condition category - 1.1. Multitopness is observed in 18.4% of trees, a phenomenon reducing timber marketability but increasing nut-bearing capacity. Hence, given the species' high plasticity, it can be concluded about its successful growth at the site under introduction conditions. The surveyed site, as geographical cultures, can prospectively provide seed and vegetative material for created objects for breeding work.
Siberian cedar, introduction, crops, taxation indicators, variability
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