FIELD: silviculture. SUBSTANCE: method involves selection of trees with the best shape of the trunk by determining the trunk diameter at the point of contact of a straight line drawn from the trunk top to the shape-forming curve, and the height of this point. The ratio of these dimensions in per cent determines the index of the tree shape. Trees are classified into categories by the value of this index. EFFECT: higher efficiency. 2 dwg, 1 tbl
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