Silviculture and Ecology of Western U.S. Forests
Oregon State University Press, 2007 - Technology & Engineering - 440 pages
Once regarded solely as the cultivation of forest trees, silviculture is today shifting to a broader focus, one that reflec ts societies' changing forest values. In addition to timber management, the prac tice and science of silviculture are now concerned with tending forests--to reduce fire potential, benefit wildlife, and maintain aesthetics--and with ensuring options for future uses of the forest. In Silviculture and Ecology of Western U.S. Forests, John Tappeiner, Douglas Maguire, and Timothy Harrington follow the progression of silviculture as a science and look closely at the value of forests. The only silviculture text to focus on the forests of the western U.S., primarily those in Oregon, Washington, and California, it is based on over 900 references as well as the authors' extensive research and management experience. This timely work includes detailed chapters on fire, shrub ecology, density measurements, thinning, reforestation, and ecosystem variables such as insec ts, fungi, soils, and water stress. It explores topics such as natural vegetation dynamics that help predic t and explain silviculture treatments, and how slight modifications in thinning prac tices can benefit wildlife and reduce the potential for insec t damage. Readers will come to understand the significance of carefully managing forests by conscious design, providing for a range of forest ecosystems and resources. An essential reference for forest managers, policy makers, forest scientists, and students (the book includes a set of study questions), this authoritative volume provides a basis for silviculture prac tices and contemporary management of western forests.
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Some Ecological Principles Basic to Silviculture
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advanced regeneration bark beetles basal area bigleaf maple biomass burning canopy ceanothus clearcutting codominant competition conifer damage diameter classes diameter growth disturbance Douglas-fir Douglas-fir stands effects even-aged example fertilization foliage forest floor forest stands fuels germination growing habitat height growth increased insects large trees leaf area lodgepole pine logging manzanita maximum mixed-conifer mortality natural regeneration number of trees nutrients occur Oregon overstory trees Pacific madrone pathogens photosynthesis planting ponderosa pine prescribed fire production red alder reduce relative rhizomes salal salmonberry saplings seedling establishment seedlings self-thinning severe fire shade-tolerant shelterwood shrubs shrubs and hardwoods silvicultural silvicultural practices silvicultural systems silvicultural treatments slash soil water species composition sprouting stand density stand development stand growth stand structure stem susceptible tanoak Tappeiner temperatures thinned stands trees/ac true fir understory uneven-aged stands variables vegetation vigor volume growth water potential western hemlock western redcedar white fir wind wood young stands