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Full-Text Articles in Physical Sciences and Mathematics
Utah Timber Production And Mill Residue, 1992, United States Department Of Agriculture, Forest Service
Utah Timber Production And Mill Residue, 1992, United States Department Of Agriculture, Forest Service
Forestry
Utah's timber production in 1992 was 13.3 million cubic feet (63.7 million board feet, Scribner rule), up 9 percent from 1974. Sawlog production was 10.2 million cubic feet (52.5 million board feet). House log volume was 1.6 million cubic feet (8.2 million board feet). Lodgepole pine comprised 48 percent, Uintah County 29 percent, and National Forest lands 78 percent of the harvest. Mill residue volume was 7 million cubic feet, 82 percent of which was used, most for fencing, firewood, animal bedding, or industrial plant fuel.
Overstory Removal And Residue Treatments Affect Soil Surface, Air, And Soil Temperature: Implications For Seedling Survival, United States Department Of Agriculture, Forest Service
Overstory Removal And Residue Treatments Affect Soil Surface, Air, And Soil Temperature: Implications For Seedling Survival, United States Department Of Agriculture, Forest Service
Forestry
Timber harvesting and residue reduction practices that alter shade, surface thermal properties, and moisture influence energy balance and heat transfer on the site, significantly influencing temperatures. Because the problems of mortality to seedlings due to high temperature and insufficient moisture are potentially widespread and expensive, it is crucial to be able to identify problem sites during the planning process.
Converting Forest Residue To Structural Flakeboard - The Fingerling Concept, United States Department Of Agriculture, Forest Service
Converting Forest Residue To Structural Flakeboard - The Fingerling Concept, United States Department Of Agriculture, Forest Service
Forestry
Structural-grade flakeboard experimentally manufactured from forest residues showed mean strengths above 5,500 psi and stiffness (MOE) above 600,000 psi. For economical transport, residues are chipped into "fingerlings" in the woods. Chipping rates are estimated at 50 tons per hour for large residues, and 15 tons per hour for small residues -- using different machines. Depending on the harvesting system selected, estimated costs of fingerlings delivered to the mill range from $25 to $33 per bone-dry ton for systems other than cable yarders.
Estimating Merchantable Volume And Stem Residue In Four Timber Species: Ponderosa Pine, Lodgepole Pine, Western Larch, Douglas-Fir, United States Department Of Agriculture, Forest Service
Estimating Merchantable Volume And Stem Residue In Four Timber Species: Ponderosa Pine, Lodgepole Pine, Western Larch, Douglas-Fir, United States Department Of Agriculture, Forest Service
Forestry
Presents tables and equations for estimating total cubic volumes of wood, wood residue, and bark for ponderosa pine, lodgepole pine, western larch, and Douglas-fir. Tables represent second-growth trees 80 years old or less, ranging in size from 1-1/2 inches d.b.h. to the maximum diameter measured for the respective species. The equations and tables provide a means for estimating wood bark residue volumes from tops, bole sections, and smaller submerchantable stems. Tables and equations can also be used to estimate total cubic volume for the size classes, species, and locale sampled.