Treesearch

Two-year-old seedlings grown from seed outdoors in three southwestern Oregon soils were excavated to determine their root development. Roots of Douglas-fir, ponderosa pine, sugar pine, grand fir, and incense-cedar seedlings differed substantially in total extent, form, and balance in relation to tops. Information on the natural development of roots provides a benchmark for judging how much root development of nursery stock is altered.

The potential of higher revenues in the log export market is constrained by possible reductions in prices associated with expanded supplies in the Japanese log market. Expanded log exports from the Tongass National Forest might force adjustments by existing cantmills, even under a partial easing of the export restriction.

The aesthetics of clearcut units potentially visible from a distance can be improved by judicious design. Screening clearcuts from view or shaping them to characterize natural openings are current methods used for this purpose. Perspective plots illustrating how proposed clearcut units will look from specific off-site viewing points provide an appropriate means of evaluating how well the units meet desired visual objectives. This procedure has been automated on a desk-top computer system using digitizer, plotting peripherals, and topographic maps. The explanations, listings, and logic are...

As part of the International Biological Program, a primary meteorological station was installed in the west-central Cascade Range of Oregon. Short-wave solar radiation, air temperature, dewpoint temperature, windspeed, and precipitation are recorded continuously. Climatic data are summarized in a daily record available from May 11, 1972, to date. This report details the measurements, processing, and analyses of these variables at the H. J. Andrews Experimental Forest.

This paper describes the application of the Incentive System for Litter Control to wilderness and backcountry environments. Based on research, observation, and management experience, a set of procedures was developed and is presented here. Additional management considerations are discussed.

Southeast Alaska offers a variety of recreational and aesthetic or scenic resources not found elsewhere in the United States. Use of these resources for commodity production and recreational purposes is increasing, which often results in conflicts. This report summarizes what is known about the recreational and aesthetic resources of the region, the present and anticipated recreation uses, and the important issues concerning recreation and aesthetics.

This report summarizes the 1972 timber resource inventory of the Sacramento area, California. Included are detailed tables of forest area, timber volume, growth, mortality, and timber cut and a discussion of the current timber resource and timber industry situation.

Big huckleberry abundance was correlated with associated vegetation and soil pH in a 625-square-kilometer (241-square-mile) area southwest of Mount Adams, Washington. Annual berry production appeared to be influenced by weather more than by site factors in this area. Douglas-fir site index was not correlated with either Vaccinium membranaceum abundance or berry production.

This report presents statistics from a 1975 timber resource inventory of Benton, Lane, Lincoln, and Linn Counties, Oregon. Tables are of forest area, timber volume, growth, and mortality.

Fire has historically played a role in forests and ranges of the inland Northwest. This guide has been prepared to help managers understand the role of fire and the potential uses of fire and to plan for fire use in managing these lands. Sections deal with these topics, and steps in planning a prescribed burn are outlined. A sample burning situation illustrates the planning and execution of a prescribed burn. References are given to help the reader locate pertinent information.