Wood in Our Future: Proceedings of a Symposium : by Board on Agriculture, National Research Council

By Board on Agriculture, National Research Council

The U.S. produces 25 in step with cent of the world's wooden output, and wooden helps a massive phase of the U.S. commercial base. timber supply fiber, resins, oils, pulp, nutrition, paper, prescribed drugs, gas, many items utilized in domestic development, and diverse different items. using wooden as a uncooked fabric needs to ponder creation efficiencies and ordinary source conservation in addition to effective, ecocnomic use of stable wooden, its residues, and by-products. to higher examine using wooden as a uncooked fabric, the U.S. division of Agriculture's wooded area carrier requested the nationwide study Council's Board on Agriculture to assemble specialists to study the analytical recommendations used to stick with the life-cycle of wooden creation - from tree to product - and verify the environmental affects. This ensuing booklet offers a base of present wisdom, selecting what info are missing, the place destiny efforts will be centred, and what's identified concerning the methodologies used to evaluate environmental affects. The e-book additionally makes a speciality of nationwide and overseas efforts to strengthen built-in environmental, monetary, and effort accounting methodologies.

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LUMBER Figure 3-1 illustrates the flow of materials and products associated with lumber. The extraction of the tree from the forest, transportation, and other products or activities (such as use of bark, sawdust, and fuels or preservatives) are not identified in this drawing. FIGURE 3-1 Flow of materials and products associated with lumber. Copyright © National Academy of Sciences. All rights reserved. html 30 WOOD IN OUR FUTURE: THE ROLE OF LIFE-CYCLE ANALYSIS Factors that influence impact as shown in the diagram include: • Recycle loops, in which wood is shown to be recycled into particle board and mulch.

This led President Harry S. Truman to appoint the Paley Commission to study materials supply from the vantage point of national security. National Commission on Materials Policy In the late 1960s, the beginnings of concerns related to the relationships between materials supply and the environment surfaced and resulted in the passage of the National Materials Policy Act of 1970 which included a mandate to the president to appoint the National Commission on Materials Policy. The commission’s charge included determination of • national and international materials requirements priorities and objectives, both current and future, including economic projections; • the relationship of materials policy to national and international population size and to the enhancement of environmental quality; • means for the extraction, development, and use of materials that can be recycled or reused or that self-destruct, to enhance environmental quality and conserve materials; Copyright © National Academy of Sciences.

Consumption, the effect is simply to transfer demand to regions outside our borders or to trigger substitution of nonwood materials. The mid-1970s NRC CORRIM study (1976a) quantified the energy use associated with production and use of wood and other building materials. Based on its results and the findings from several more recent studies outside the United States (Arima, 1993; Buchanan, 1991; Meil, 1994; National Commission on Materials Policy, 1973; National Research Council, 1976a; Richter and Sell, 1992), it is clear that materials substitution results generally in large increases in energy consumption (and all associated environmental impacts) for raw-materials gathering and processing.

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