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Title: Estimating tree bole and log weights from green densities measured with the Bergstrom Xylodensimeter.

Author: Waddell, Dale R.; Lambert, Michael B.; Pong, W.Y.;

Date: 1984

Source: Res. Pap. PNW-RP-322. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 24 p

Publication Series: Research Paper (RP)

Description: The performance of the Bergstrom xylodensimeter, designed to measure the green density of wood, was investigated and compared with a technique that derived green densities from wood disk samples. In addition, log and bole weights of old-growth Douglas-fir and western hemlock were calculated by various formulas and compared with lifted weights measured with a load cell attached to a front-end loader. The Bergstrom xylodensimeter accurately measured green wood density and is useful for estimating log weights.

Keywords: log measurements, boles, wood density, cubic volume measure, measuring equipment, old-growth stands

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Waddell, Dale R.; Lambert, Michael B.; Pong, W.Y. 1984. Estimating tree bole and log weights from green densities measured with the Bergstrom Xylodensimeter. Res. Pap. PNW-RP-322. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 24 p

 


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