| УДК |
Аннотация: Some relationships between crown size and stem diameter at breast height having application in silviculture, aerial inventories of forest resources and fire protection, were determined from 48 red spruce and 80 balsam fir growing together in the same stands. For trees of the same d.b.h., spruce crowns vary in width and average slightly wider than fir crowns, lengths are similar for both species, but spruce crowns are much heavier. All relationships examined were highly significant for both species but the strongest correlation was between d.b.h. and crown weight.
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