by Pacific Northwest Forest and Range Experiment Station in Portland .
Written in English
|Statement||by Richard E. Miller.|
|Series||USDA Forest Service research note PNW -- 216.|
|Contributions||Pacific Northwest Forest and Range Experiment Station (Portland, Or.)|
|The Physical Object|
|Pagination||8 p. :|
Traveling across the state, you soon discover that Oregon is home to a wide range of trees. There are 30 native coniferous species and 37 native species of broadleaf trees. Oregon varies greatly in terms of elevation, temperature, wind, rainfall and soil composition. Combinations of all these factors help determine the dominant tree species of an area. This publication is part of the Alternative Forest Management series. It describes a case study on thinning in the mature Douglas-fir stands common to interior southwestern Oregon, many of which have become very dense and are at risk of loss due to wildfire, drought, and insect attack. Following a wide thinning from below, nearly all the trees in the study responded with. Oregon and Gabriel F. Tucker, Castor International, 8th Avenue S.W., Olympia, Washington Overstory Response to Alternative Thinning Treatments in Young Douglas-fir Forests of Western Oregon Abstract An increase in land dominated by young second-growth Douglas-fir forests in the Pacific Northwest has coincided with heightened. Thinning is removing selected trees from a stand to allow others to continue growing. Ordinarily, a woodland manager uses a thinning system that encourages the remaining trees to grow in a manner consistent with the manager’s objectives for those : William H. Emmingham, Daniel Green.
Abstract. Nine hundred and forty permanent to ha plots were established in the Vancouver Forest Region by the B.C. Forest Productivity Committee in to study the effects of thinning and/or fertilizing pure and mixed stands of immature Douglas-fir (Pseudotsuga menziesii [Mirb.]. Influence of Thinning on Acoustic Velocity of Douglas-fir Trees in Western Washington and Western Oregon. David. G. Briggs, Gonzalo Thienel, Eric. C. Turnblom, Eini Lowell, Dennis Dykstra, Robert. J. Ross, Xiping Wang, and Peter Carter. Abstract. Acoustic velocity was measured with a time-of-flight method on approximately 50 trees in each Cited by: 1. Introduction. Much is known about the effects of thinning on stand characteristics such as volume growth and rates of overstory tree mortality, as well as on individual tree characteristics such as diameter growth and live crown ratio (Smith, ).Several long-term studies have related tree and stand development to such measures of stand density as basal area, stand density index (Reineke Cited by: C. A. Berger et al. TABLE 1 Site Characteristics for Selected Study Locations in the Coast and Cascade Range Mountains of Western Oregon Site Blue Retro Little Wolf Sand Creek Perkins Creek Latitude (hddd mm ss)43 16 49 N 20 N 05 N43 42 51 N Longitude (hddd mm ss) 04 57 W 37 45 W 35 26 W 54 47 W Elevation range (ft) 1,–1, – 1,–1, .
Review Forest Restoration Using Variable Density Thinning: Lessons from Douglas-Fir Stands in Western Oregon Klaus J. Puettmann 1,*, Adrian Ares 2, Julia I. Burton 3 and Erich Kyle Dodson 1 1 Department of Ecosystems and Society, Oregon State University, Corvallis, OR , USA; [email protected] Size: 2MB. of the Douglas-fir timber types potentially pass through this to year-old range, providing regeneration cuts are not made prior to age Table Inventory of Douglas-fir type,. westen Oregon and Washington, Age class Area Volume. Thousand acres. 2, 1, 1, The response to various levels of stand density by natural Douglas-fir regeneration, shrub and sprouting hardwood species was studied in the mixed-evergreen-forests of southwest Oregon. Partial-cut old growth (harvested years prior) and thinned evenaged (harvested years prior) stand types were used as surrogates for intentionally Cited by: 1. Lessons from Douglas-Fir Stands in W estern Oregon Klaus J. Puettmann 1, *, Adrian Ares 2, Julia I. Burton 3 and Erich Kyle Dodson 1 1 Department of Ecosystems and Society, Oregon State.