. 1980-1990 national program of research for forests and associated rangelands. --. Forests and forestry Research United States; Rangelands Research United States. future needs. Lower-grade material is now going into construction, and reconstituted products of residues and lower-quality fiber are gaining in structural ap- plications. These changes in material use are occurring without adequate design technology to evaluate their effect on end-use performance. For efficient materials use, materials and material properties must be developed for specific end uses. This will require basic research
. 1980-1990 national program of research for forests and associated rangelands. --. Forests and forestry Research United States; Rangelands Research United States. future needs. Lower-grade material is now going into construction, and reconstituted products of residues and lower-quality fiber are gaining in structural ap- plications. These changes in material use are occurring without adequate design technology to evaluate their effect on end-use performance. For efficient materials use, materials and material properties must be developed for specific end uses. This will require basic research on the interrelationships among material properties, design, and end-use performance. • Utilize residues and recycled fiber.—Due to past utilization practices, much of the hardwood forest is composed of low-quality trees that cannot be economically harvested for processing. During harvesting, only about one-half of the material is removed, and additional residues are generated in each subsequent step in the processing chain. Finally, wood-based wastes generated in urban areas con- stitute a disposal problem as well as a potential source of fiber. Research is needed to develop technology for the manufacture of wood-based products, energy, and chemicals from forest and mill residues and urban wastes. • Produce and conserve energy.—Only about 2 per- cent of our national energy budget is produced direct- ly or indirectly from the forest, but this could be in- creased to about 8 percent with improvements in utilization technology. Possibilities include improved liquid fuels from wood and improvements in wood combustion processes, such as fluidized bed and suspension burning. Another contributing feature is the encouragement of energy conservation through less energy-intensive manufacturing techniques and im- proved building designs. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and app
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