2 edition of Net and gross yields for natural stands of western hemlock in the Pacific Northwest found in the catalog.
Net and gross yields for natural stands of western hemlock in the Pacific Northwest
Kenneth N. Wiley
by Western Forestry Research Center, Weyerhaeuser Co. in Centralia, Wash
Written in English
Includes bibliographical references.
|Statement||Kenneth N. Wiley.|
|Series||Weyerhaeuser forestry paper -- no. 19.|
|LC Classifications||SD397.W45 W5 1978|
|The Physical Object|
|Pagination||iv, 124 p. :|
|Number of Pages||124|
Western hemlock 5 6 8 3 -- 22 True fir (white and Pacific silver) 2 2 2 -- 5 11 Western redcedar 1 1 1 1 1 5 0therLl (2) 1 -- -- -- 1 L1~ncludes western white pine, sugar pine, incense-cedar, Pacific yew, red alder, and golden chinkapin. 2I~ess than percent. Mortality occurs predominantly in larger trees- . Hann DW, Marshall DD, Hanus ML () Equations for predicting height-to-crown base, 5-year diameter growth rate, 5-year height growth rate, 5-year mortality rate, and maximum size-density trajectory for Douglas-fir and western hemlock in the coastal region of the Pacific Northwest.
Lumber recovery and defect studies also have been done in the Pacific Northwest for western hemlock (4,8). Cubic scale Scribner scale Species Gross Net Defect Gross Net ( (%) (BF) Sitka spruce 5, 5, 3 22, 22, Western hemlock 5, 4, 8 20, 20, Fluted henflock 1, 24 5, 4, To 10, 7. See. Growth and yield of Sitka spruce and western hemlock at Cascade Head Experimental Forest, Oregon. Research Paper PNW USDA Forest Service, Pacific Northwest Forest and Range Experiment Station, Portland, OR. *Sollins, P. Input and decay of coarse woody debris in coniferous stands in western Oregon and Washington.
The “long-term stable state” is the stand condition which is normally achieved following years without unnatural disturb-ance. The Pacific silver fir series exists wherever the long-term stable vegetation will have at least 10 percent cover of fir. Contin-uing on to more severe environments, the mountain hemlock series exists. These stands resulted from the first extensive plantings of this species in the Pacific Northwest. Data from acre plots in these plantations were compared to those from matched plots in adjacent, naturally regenerated stands with the same history of logging, wildfire, and absence of further siviculture after regeneration.
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Net and gross yields for natural stands of western hemlock in. the Pacific Northwest. Weyerhaeuser Forestry Paper No. TSHE yr: Table 12 (S.I.>) and Table 14 (S.I. ) from Barnes, G.H. Yield of Even-Aged Stands of Western Hemlock. USDA Tech. Bul.52p., illus. Pacific Northwest Forest and Range Experiment Station.
Size: KB. TSHE Wiley, Kenneth N., Net and Gross Yields for Natural Stand of Western Hemlock in the Pacific Northwest. Weyerhaeuser Forestry Paper No. Culmination of Mean Annual Increment for Commerical Trees of Oregon Forestry Technical Note 2 SITE.
Regeneration can be either natural or planted. Forest overstory. Typically dominated by western hemlock, Douglas-fir is usually present and occasionally codominant. Western redcedar, Sitka spruce and red alder may or may not be present as minor components. Forest understory.
The understory is often sparse due to the dense canopy of western hemlock. Pacific Northwest Forest and Range Experiment Station Research Paper PNW about 30 percent more gross growth and 10 percent more net growth than com- A view of a year-old Sitka spruce-western hemlock stand commercially thinned in.
Effect of stand age and nitrogen (N) fertilization on evapotranspiration (E), gross primary productivity (GPP) and water use efficiency (WUE) in a chronosequence of Pacific Northwest Douglas-fir stands.
Filled triangles are forthe first year after by: capturing natural stand mortality with repeated entries to remove small amounts of scattered wood; and the attempt to gain an early return on in-vestments often results in a negative cash flow (LeDoux and Brodie ).
Western hemlock-Sitka spruce forests are economically important in the Pacific Northwest. They are highly. James Barbour's 38 research works with citations and 2, reads, including: Socioeconomic Constraints to Biomass Removal from Forest Lands for Fire Risk Reduction in the Western U.S.
Notably, from a structural standpoint, trees can be alive or dead and standing or down. Some forests, such as mature (> 80 years) Douglas-fir (Pseudotsuga menziesii)/western hemlock (Tsuga heterophylla) in the Pacific Northwest are comprised of a continuous, multilayered canopy from the ground up—shrubs, lower, mid, and overstory strata.
Fruiting bodies and forest floor samples were collected and analyzed for N, P, K, Ca, Mg, Mn, and Na content in red alder, Douglas-fir, western hemlock, and Pacific silver fir ecosystems in.
net stand growth may be negative. The structure of late-successional stands is variable because of species composition, soil drainage, and the effect of chance damage from wind, insects, or other factors. Most trees in a typical old-growth stand are western hemlock. Relatively few Sitka.
Roots of western hemlock (Tsuga heterophylla) seedlings 1–5+ years old that had established naturally on logs in three states of decay or on mineral soil were compared for numbers and kinds of.
Environmental Settings of Western Washington (MB PDF) Stand Development in Natural Douglas fir Forests (MB PDF) Douglas fir (MB PDF) Sitka spruce (MB PDF) Noble fir (MB PDF) Western hemlock (MB PDF) Western redcedar (MB PDF) Pacific silver fir (MB PDF) Conclusion and Back Cover (MB PDF).
Franco) stands in western Washington. The stands at the initiation of the study w 24, 44, 75, and 97 years old. Nylon litter bags (1 mm mesh) containing needles from the year-old stand. Leaf water potential is most negative for Douglas-fir and similar for western hemlock and western red cedar.
Terpene fluxes from foliage equal approximately 1% of the net carbon loss from the forest. Modeled estimates based on physiological measurements show gross primary productivity (GPP) to be about 22 Mg C m−2 y−1. The stand is dominated by evergreen conifer species including Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco), the oldest and largest trees in diameter and height, and western hemlock (Tsuga heterophylla (Raf.) Sarg).
Average tree heights are 52 m for Douglas-fir and 19 m for western hemlock (Ishii et al ). in the Pacific Northwest Yuzhen Li, Eric C. Turnblom, and David G. Briggs Abstract: To examine the effects of density control and fertilization on stand growth and yield of young Douglas-fir.
Thornton T. Munger Research Natural Area (RNA) was established to represent old-growth Douglas-fir (Pseudotsuga menziesii)-western hemlock (Tsuga heterophylla) forests of Washington's cascade aphy is gentle and there is a low elevation permanent pond located near the.
The cumulative net cubic-foot yield of the unthinned control at age 42 was greater than the total yield of any of the thinning treatments.
The live volume of the unthinned western hemlock at age 42 exceeded the cumulative net yield of the Douglas-fir control by 11 percent. Cumulative net yield in terms of board feet, a common merchandising unit of.
Productivity of Pure Stands UNMANAGED STANDS Normal yield tables for red alder (Worthington et al., ) show that net growth. of well-stocked, natural stands is rapid (about ft3 per acre per year) when they are young, and decreases gradually to zero at age 90 on median site index MeyerBs "Yield of Even-aged Stands of Sitka Spruce and Western Hemlock", (u.s.D.A.
Tech. Bull. In order to check these rates by periodic remeasurement, permanent plots have been established in typical stmds. In the spring of eleven such plots were put in on the newly-established Cascade Head Experimental Forest, near Otis, Oregon.
Loren D. Kellogg's 42 research works with citations and 2, reads, including: Development of efficient cutting patterns to maximize value with a log-allocation constraint.The Pacific Northwest (PNW), sometimes referred to as Cascadia, is a geographic region in western North America bounded by the Pacific Ocean to the west and (loosely) by the Rocky Mountains on the east.
Though no official boundary exists, the most common conception includes the Canadian province of British Columbia (BC) and the U.S. states of Idaho, Oregon, and Washington.Cochran, P. H. Gross yields for even-aged stands of Douglas-fir and white or grand fir east of the Cascades in Oregon and Washington.
USDA Forest Service, Research Paper PNW Pacific Northwest Forest and Range Experiment Station, Portland, OR. 17 p. Curtis, Robert 0., Francis R. Herman, and Donald J. DeMars.