Volume tables for trees of interior Alaska /

Abstract

The attached volume tables are derived from 69 5 tree measurements obtained in 19 57 and 19 60. Nine general areas were sampled north and south of the Alaska Range and on the Kenai Peninsula. Data were gathered for white spruce (Picea glauca) , quaking aspen (Populus tremuloides) , paper birch (Betula papyrif era) , and balsam poplar (Populus balsamifera) , including black Cottonwood (P. trichocarpa) to a limited extent. Most tree measurements came from randomly located l/50-acre plots within stands comprising at least one acre of the same type and stand-size class. Smalian's formula was used to determine cubic-foot volume of sample trees at least 5.0 inches d.b.h. (diameter breast high). Volume was found between a one-foot stump and a minimum merchantable top of 4. 0 inches inside bark (d.i.b.). Points of measurement were generally at 8.15-foot intervals The International l/4-inch rule and Scribner rule were used to find board-foot volume of sample trees in 16-foot logs. The minimum d.b.h. of sawtimber-size spruce was 9.0 inches; for hardwoods, 11.0 inches. Limits were from a one-foot stump to a top equaling 40 percent of d.b.h. , but not less than 6.0 inches d.i.b. in spruce and 8.0 inches d.i.b. in hardwoods. Initial plottings of volume classes over D^H were linear over most of the range except those for paper birch cubic-foot and balsam poplar 1/ The combined variable reported by Spurr where D = d.b.h. in inches H = total tree height in feet. Spurr, Stephen H. Forest Inventory. 4 76 pp. New York: The Ronald Press Co. 1952. T^ORTHERN FOREST EXPERIMENT STATION U JUNEAU, ALASKA U. S. DEPARTMENT OF AGRICULTURE board-foot. These lines dropped slightly at the upper ends-zones of fewdata. Variability increased with increasing values of D^H for all plottings.

International board-foot volume tables for trees in the Susitna River Basin, Alaska.

“…Predicted board-foot volumes for white and black spruce (table 1) were generally lower than predicted volumes in other published tables (Dippold and Farr 1971, Farr 1967, Haack 1963 for total tree height in the range of tree data for all tables. Dippold and Farr's (1971) Farr's (1967) The board-foot volumes for paper birch and quaking aspen (table 2) are slightly higher than those reported by Haack (1963) over the range of data.…”

“…The black cottonwood board-foot volumes (table 3) are consistently higher throughout the range of the table than those reported by Haack (1963) for balsam poplar (Populus balsamifera L.) in interior Alaska. Cottonwood and poplar are nearly identical in form and appearance and are difficult to distinguish without chemical analysis.…”

“…Dippold and Farr's (1971) Farr's (1967) The board-foot volumes for paper birch and quaking aspen (table 2) are slightly higher than those reported by Haack (1963) over the range of data. The differences are minimal in the center of the table and increase at both ends for small-diameter short trees and large-diameter tall trees.…”

International board-foot volume tables for trees in the Susitna River Basin, Alaska

“…Predicted board-foot volumes for white and black spruce (table 1) were generally lower than predicted volumes in other published tables (Dippold and Farr 1971 , Farr 1967, Haack 1963 for total tree height in the range of tree data for all tables. Dippold and Farr's (1971) Haack's (1963) The board-foot volumes for paper birch and quaking aspen (table 2) are slightly higher than those reported by Haack (1963) over the range of data. The differences are minimal in the center of the table and increase at both ends for small-diameter short trees and large-diameter tall trees.…”

Total and Merchantable Volume of White Spruce in Alaska

“…Predictions of the merchantable volume model to a 4-in. top were compared against observed values and predictions of three other white spruce volume models used in Alaska (Haack 1963, Beagle 1979, Larson and Winterberger 1988. The 201 validation samples were used to test the hypothesis that a statewide volume model could be accurate for applications across the region and within the six DOF areas.…”