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acres bark beetles basal area Beetle Infested beetle outbreaks beetle populations beetle-caused Blue Mountains National conifer damage defoliation diversity Douglas-fir beetle Douglas-fir tussock moth dwarf mistletoe ecosystem effects Engelmann spruce epidemic factors fir engraver fire Forest and Range forest health forest insects Forest Plans Forest Service fungus grand fir growth habitat harvest hazard host trees impacts increase infected trees insect insect and disease killed lands larvae levels lodgepole pine losses Malheur National Forest management activities management allocation monitoring mountain pine beetle occur Oregon overstory Pacific Northwest percent pheromone pine stands plant communities ponderosa pine Range Experiment Station Ranger Districts reduce regeneration resource management result riparian salvage seral silvicultural soil species spruce beetle stand conditions suppression Tech treatment true fir tussock moth outbreak U.S. Department Umatilla National Forest understory USDA vegetation Wallowa-Whitman National Forest Washington watershed western larch western pine beetle western spruce budworm Wickman
Page 16 - To declare a national policy which will encourage productive and enjoyable harmony between man and his environment; to promote efforts which will prevent or eliminate damage to the environment and biosphere and stimulate the health and welfare of man; to enrich the understanding of the ecological systems and natural resources important to the Nation ; and to establish a Council on Environmental Quality.
Page iv - No public forest reservation shall be established, except to improve and protect the forest within the reservation, or for the purpose of securing favorable conditions of water flows, and to furnish a continuous supply of timber for the use and necessities of citizens of the United States...
Page 17 - Objective: A concise, time-specific statement of measurable planned results that respond to pre-established goals. An objective forms the basis for further planning to define the precise steps to be taken and the resources to be used in achieving identified goals.
Page 172 - Cumulative impact" is the impact on the environment which results from the incremental impact of the action when added to other past, present, and reasonably foreseeable future actions regardless of what agency (Federal or non-Federal) or person undertakes such other actions. Cumulative impacts can result from individually minor but collectively significant actions taking place over a period of time.
Page iv - ... provide for diversity of plant and animal communities based on the suitability and capability of the specific land area in order to meet overall multiple-use objectives...
Page 30 - Visual resource - The composite of basic terrain, geologic features, water features, vegetative patterns, and land use effects that typify a land unit and influence the visual appeal the unit may have for visitors.
Page 16 - RPA"). These regulations prescribe how land and resource management planning is to be conducted on National Forest System lands. The resulting plans shall provide for multiple use and sustained yield of goods and services from the National Forest System in a way that maximizes long term net public benefits in an environmentally sound manner.
Page 10 - Even-aged management: The application of a combination of actions that results in the creation of stands in which trees of essentially the same age grow together. Managed even-aged forests are characterized by a distribution of stands of varying ages (and, therefore, tree sizes) throughout the forest area. The difference in age between trees forming the main canopy level of a stand usually does not exceed 20 percent of the age of the stand at harvest rotation age. Regeneration...
Page v - That these standards shall not preclude the Secretary from salvage or sanitation harvesting of timber stands which are substantially damaged by fire, windthrow or other catastrophe, or which are in imminent danger from insect or disease attack...
Page 14 - Integrated pest management: A process for selecting strategies to regulate forest pests in which all aspects of a pesthost system are studied and weighed. The information considered in selecting appropriate strategies includes the impact of the unregulated pest population on various resources values, alternative regulatory tactics and strategies, and benefit/cost estimates for these alternative strategies. Regulatory strategies are based on sound silvicultural...