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Variation of bulk density on the stems of Betula costata, Betula schmidtii, Betula davurica and Betula ermanii

Variation of bulk density on the stems of Betula costata, Betula schmidtii, Betula davurica and Betula ermanii

Wood Science and Technology Mogjae gonghak 12(6): 24-33

Three patterns of variation in density across the radius of stems were found. In B. costata, density increased rapidly from pith outwards reaching a max. and then decreasing to the bark. In B. schmidtii, density reached a max. rapidly and decreased immediately. In B. ermanii density increased slowly in the early stages and reached a plateau.

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