Abstract
Percentage of bark in trunks and roundwood is investigated produced from birch (Betula verrucosa) in conditions of the Leningrad region. Background information for the study were the data on the inventory of model trees made at the trial plots laid down in parts of the region with a share of birch more than 30 %. Volumes of trunks and volumes of individual assortments in the bark and without bark were calculated from the sum of the volumes of sections. Bark content was determined as a percentage from volume with bark for trunks and without bark - for assortments.
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