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2 edition of Mapping and managing poorly stocked Douglas-fir stands found in the catalog.

Mapping and managing poorly stocked Douglas-fir stands

Daniel Green

Mapping and managing poorly stocked Douglas-fir stands

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  • 2 Currently reading

Published by Extension Service, Oregon State University in Corvallis, Or .
Written in English

    Subjects:
  • Forest mapping.,
  • Forest management.,
  • Douglas fir.,
  • Woodlots -- Management.

  • Edition Notes

    Statement[prepared by Dan Green, Michael C. Bondi, and William H. Emmingham].
    SeriesWoodland workbook, Extension circular / Oregon State University Extension Service -- 1133., Extension circular (Oregon State University. Extension Service) -- 1133.
    ContributionsBondi, Michael C., Emmingham, William H., Oregon State University. Extension Service.
    The Physical Object
    Pagination7, [1] p. :
    ID Numbers
    Open LibraryOL16099030M

    Data were collected in the Kootenay Dry Mild Interior Douglas-fir subzone variant (IDFdm2) of the Interior Douglas-fir biogeoclimatic ecological classification zone, Invermere Forest District. A total of plots were sampled for plot-level data; 25 of these were subsampled for additional substrate information and spatially mapped. Objectives were to: 1) examine the explanatory ability of. Following disturbance, Douglas-fir and noble fir become established. Pacific silver fir is the last to invade, sometimes to years after the disturbance. After extensive forest fires, Pacific silver fir may not become important among the large trees for to years [61,69]. Eventually, Douglas-fir and noble fir fail to reproduce. Douglas-fir seed orchard management. A microcomputer decision method. USDA Forest Service, Gen. Tech. Report PSW 29 pages. Experimental forests and ranges. Field research facilities of the Pacific Southwest Research Station. Forest recreation research at the Pacific Southwest Forest and Range Experiment Station.


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Mapping and managing poorly stocked Douglas-fir stands by Daniel Green Download PDF EPUB FB2

Mapping and managing poorly stocked Douglas-fir stands (Extension circular Oregon State University Extension Service) [Green, Daniel] on FREE shipping on qualifying offers. Mapping and managing poorly stocked Douglas-fir stands (Extension circular Oregon State University Extension Service).

Stands of Douglas-ir ranging from 15 to 35 years old and from very poorly stocked to well stocked were sampled along transect lines. At 5­ chain intervals four 1acre quadrats were laid out (a circle feet in radius divided into.

George. Staebler. Forester, Puget Sound Research Center. ECMapping and Managing Poorly Stocked Douglas-fir Stands, defines terms, shows how to divide trees into separate stands, and explains how to make sampling plans. ECTools for Measuring Your Forest, describes tools used to measure your trees.

EMMeasuring Your Trees Workbook, is a computer-based calculator you can use instead. Publication Topics Publications; General Overview: Steen, O. and H. Armleder. Managing ingrown Douglas-fir stands for biodiversity, forage and timber: the.

ecosystems such as the Interior Douglas-fir zone (IDF) of British Columbia, Douglas-fir is the climax species (Arno ; Hope et al. Interior Douglas-fir grows in extensive pure stands, both uneven-aged and even-aged (Hermann and Lavender ).

Reproduction Flowering occurs in May and June in Northern Idaho (Hermann and Lavender ). Retrieval Terms: Douglas-fir seedlings, ecology, growth, manual and chemical release, northern California, plant community As ecosystem management increasingly becomes the operational paradigm for managing federal forest land, the art and science of.

5, acres of national forests within the Douglas fir zone showed 2, acres of Douglas fir under years old. From this survey it appears that about 34 per cent of the stands on the national forests in the Douglas fir zone are less than years old (pl.

1) ; these areas. Douglas-fir in most even-aged stand conditions. Imminent Competition-Mortality. -The zone of imminent competition-mortality, introduced by Drew and Fiewelling (), is viewed as that array of stand con- ditions where competition-related mortality is likely to occur.

The zone is bound. Forests and forestry -- Borneo. See also what's at your library, or elsewhere. Broader terms: Forests and forestry; Borneo; Narrower terms: Forest management -- Borneo; Forest pol. is a platform for academics to share research papers.

As shown in Table 5, after 50 years, random Douglas-fir mixtures (association) resulted in stands with Douglas fir stemsha and 72 m 3 ha stem volume, while dissociated stands grouped in squares exhibit similar Douglas-fir stem numbers ( stemsha) but with m 3 ha a much higher stocking Douglas-fir stem volume, which could be even.

Northwest Douglas-Fir: Estimates from Growth-and-Yield Models David D. Marshall and Eric C. Turnblom Wih increses n havest of forests ment of forest management n.

he Paciic ; ields at age 45 for a well-stocked nat­ in. e Paciic during Nohwst hs been research demonstrating ural stand or a plantaion (begun by plnting.

Improvement cutting and timber stand improvement. Timber stand improvement (TSI) is a cutting or culling of undesirable species, usually in a sapling stand of less than 4-inches in diameter.

By removing undesir - able species and poorly formed, diseased or insect-infested trees, TSI improves the species composition and stand quality.

erance scale of forest trees, Douglas-fir is so intolerant that it will not reproduce under its own dense shade in the Douglas-fir region proper. In the complete absence of cutting and fire, Douglas-fir will disappear in the stand and a climax forest of more tolerant species will take over (Isaac, ) (Fig.

GENETICS OF DOUGLAS -FIR Roy R. Silen 1 INTRODUCTION In the natural forest, Douglas -fir (Pseudot- suga menziesii iMirb. ] Franco) is a remark- ably successful species.

It vies with coastal redwood for height supremacy among the world's the droughty, fire -prone natural environment of Western North Amer- ica, it has dominated the better sites, often.

Most Douglas-fir stands in the region originated after cata-strophic wildfire (Franklin and Hemstrom ); see Franklin and Dymess () for a generalized, natural successional sequence. Young stands originating from wildfires are typi-cally dominated by Douglas-fir, although western hemlock or red alder may dominate in some areas.

By In this book the author's intention is to express and to exemplify his ideas on cybernetics and to display some of his personal philosophical reflections Mapping and managing poorly stocked. Relation of Initial Spacing and Relative Stand Density Indices to Stand Characteristics in a Douglas-fir Plantation Spacing Trial Introduction This report discusses developments in the new Douglas-fir (Pseudotsuga menzie-sii (Mirb.

) Franco var. menziesii) plantation. In the first set, the stands were of high basal area per hectare and consisted mainly of Douglas-fir. These stands hypothetically sampled the central population of Douglas-fir as it is repre- 26 TABLE 8 For central and edge stands, the mean and standard deviations of the observed factor scores (PC- 1, PC-2), the predicted factors from the cover.

Douglas-fir stands on V ancouver Island, British Columbia NICHOLAS C. COOPS, 1,2 SAM B. COGGINS 1 and WERNER A.

KURZ 3 1 Department of Forest. (Douglas-firred alder): 10,and 0i. There was no net N accretion; however, there was higher mineralizable N as NH4 in pure Douglas-fir stands than in mixed stands.

One explanation for these results is that possibly the more open conditions of Douglas-fir stands increased rates of N mineralization.

Douglas-fir foliar N and P also were. Author of Overcoming Grief and Trauma, Late effects of childhood cancer, The immortality man, Stigmata, Bunter Sahib, Late Start, Mapping and managing poorly stocked Douglas-fir stands, A personal collection of Cornish dialect words, phrases and expressions.

Book PDF Available. Consensus Document on the Biology of Douglas-fir [Pseudotsuga menziesii (Mirb. ) Franco] Although fully stocked stands hav e. This research compared understory vegetation in 28 pairs' of thinned and unthinned young Douglas-fir stands with vegetation in 18 nearby old-growth stands distributed across western Oregon (Fig.

One pair of young stands and the nearest old-growth stand were called a triad. Management actions usually include dense stocking of TPL to spur vertical stem growth and herbicides to suppress competing herbaceous and broadleaf vegetation, enhance survival of Douglas-fir seedlings, and accelerate stand growth and structural development (Oliver and Larson,Talbert and Marshall, ).

Low-elevation ponderosa pine and Douglas-fir stands are more densely stocked with increased fuel, and often represent compositional shifts to more lodgepole pine and grand fir. Economic considerations in Douglas-fir stand establishment.

USDA Forest Service PNW Old Series Research Paper No. Related Search. Deferment cutting in central Appalachian hardwoods: an update; A test planting of and Douglas-fir trees on a steep south slope.

Douglas Fir stands unsurpassed for heavy structural timbers. It is one of the strongest woods per pound of weight in the softwood field. Where strength is the primary factor, Douglas Fir meets all requirements, and its straightness, ease of fabrication and availability.

SECOND GROWTH DOUGLAS-FIR INTRODUCTION The purpose of this report is to evaluate the use of the Washington State Department of Natural Resources' (DNR) Conrprehensive Tree-Vo7-wne Tarif Tables (Turnbull, Little and Hoyer, ) for determining volume in second growth, westside Douglas-fir (Pseudotsuga menziesii (rnirb.

) Franco) stands. disturbance stand development, which has created a patchwork of stands with residual trees that have per-sisted through at least one fire (StewartMorrison and SwansonAgeeHuffGoslin ).

In fact, partial fires are thought to be necessary to initiate new cohorts of Pseudotsuga in natural stands. The Douglas fir (Pseudotsuga menziesii) is an evergreen conifer species in the pine family, is native to western North America and is also known as Douglas-fir, Douglas spruce, Oregon pine, and Columbian pine.

There are three varieties: coast Douglas-fir (P. menziesii var. menziesii), Rocky Mountain Douglas-fir (P. menziesii var. glauca) and Mexican Douglas fir (P. menziesii var. Douglas-fir seeds can sprout in partial shade. In closed stands the trees lower branches die and eventually fall off, so live foliage often occupies only the upper third of the main trunk.

Older trees have very thick bark which allows them to survive moderate surface fires, but even low-intensity fires will kill most Douglas-fir saplings. The Interior Douglas-fir Biogeoclimatic Zone covers 4 million hectares in the southern interior of British Columbia. This zone is dominated by interior Douglas-fir forests which are valued for their timber, wildlife, range and recreational values.

Interior Douglas-fir can be found growing naturally in uneven-aged structured stands; a structure that forest managers often want to maintain for.

This format shows stocking at any point in timen terms of stand average d. (Dq),2 number of trees, and basal area. As long as there is no mortality, the development of astandwith increasing age (increasing tree size) is depicted by a vertical progression upward.

The desired maximum stocking. Interior Douglas-fir is a prevalent forest type throughout the central Rocky Mountains. Past management actions, specifically fire suppression, have led to an expansion of this forest type. Although Douglas-fir forests cover a broad geographic range, few studies have described the interactive effects of various disturbance agents on forest health conditions.

In this paper, we review pertinent. Franco (Douglas-fir) stems ranging in age from 5 to 65 years and from a wide variety of stand conditions were intensively measured. Stand conditions included varying levels of vegetation management, precommercial thinning, commercial thinning, fertiliser application, and severity of infection by Phaeocryptopus gaeumannii (Rohde) Petrak (Swiss.

Stands considered high hazard for a Douglas-fir beetle outbreak have average Douglas-fir diameters greater than 23 cm dbh, average age of Douglas-fir in the stand greater than years, stocking densities exceeding 28 m 2 ha, and more than a 50 Douglas-fir component.

MAPPING VEGETATION AND FUELS FOR FIRE MANAGEMENT ON THE GILA NATIONAL FOREST COMPLEX, NEW MEXICO. Kaje Rodrigue. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Douglas-fir and redwood are obvious choices in New Zealand, even though their initial growth is lower compared with many Eucalyptus spp.

and radiata pi ne (Low and ShelbourneMaclaren ). Planted Douglas-fir ranged from 20 to 40 years in age, and natural stands from 63 to years in age.

Average survival for all tree species in planted stands was 86 after 30 years and for Douglas-fir in natural stands survival was 60 after 90 years. Armillaria root disease was the principal cause of Douglas-fir mortality in all sites.

Douglas fir is a cone-bearing softwood, meaning that it is not a "true" fir. True firs belong to the genus Abies. Douglas fir seedlings thrive in an open, sunny environment.Once converted to Douglas-fir and grand fir most stands are expected to remain so even with root diseases and bark beetles killing many of the Douglasfir and grand fir.

From to73 percent of ha of Douglas-fir stands remained Douglas-fir. Only 7 .Old-growth Douglas-fir exhibits delayed adaptive reiteration (DAR) by which foliage is regenerated continuously within the existing crown structure.

This growth pattern has been proposed to provide a compensation for size constraints in large, old Douglas-fir trees that enables them to persist when annual growth increment is minimal.