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Tuesday, May 12, 2020 | History

2 edition of Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon found in the catalog.

Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon

David W. Hann

Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon

by David W. Hann

  • 145 Want to read
  • 6 Currently reading

Published by Forest Research Lab, College of Forestry, Oregon State University in Corvallis, OR .
Written in English

    Subjects:
  • Trees -- Oregon -- Yields -- Mathematical models.

  • Edition Notes

    StatementDavid W. Hann, Chao-Huan Wang.
    SeriesResearch bulletin / Forest Research Lab, College of Forestry, Oregon State University -- 67., Research bulletin (Oregon State University. Forest Research Laboratory) -- 67.
    ContributionsWang, Chao-huan., Oregon State University. Forest Research Laboratory.
    The Physical Object
    Pagination17 p. :
    Number of Pages17
    ID Numbers
    Open LibraryOL14375559M

    EPA/ September PHOTOCHEMICAL OXIDANT AIR POLLUTANT EFFECTS ON A MIXED CONIFER FOREST ECOSYSTEM A Progress Report Scientific Editor Paul R. Miller Technical Editor Michael J. Elderman Principal Authors: Paul R. Miller, Ronald N. Kickert, 0. Old-growth Ponderosa Pine, Jeffrey Pine, Jeffrey Pine–Mixed-conifer Forests of Eastern Washington, Oregon, California, and Northern Baja California Key historical features were frequent low-severity fires and variable patterns of tree establishment, producing a Cited by:

    fir to mature aspen trees and random points to test for facilitation effects. In mixed and conifer dominated stands, we identified the three closest mature aspen trees (10 cm DBH) at each 5 m increment point along the transect and measured the distance to the nearest individual of three different DBH classes of subalpine fir (0–2 cm, 2–Cited by: Percent of mortality centers in the mixed conifer and yellow pine forests in relation to oxidant injury Pathogenicity test summary SBNF seedling establishment field study, germinated seeds, means per screened mini-plot in May, •

    The relationship between tree growth patterns and likelihood of mortality: a study of two tree species in the Sierra Nevada zone trees are particularly amenable to such an approach, as has become an increasingly dominant species in the mixed-conifer forest, while P. lambertiana, because of a host of fac-tors, has been declining in File Size: KB. Tsuga mertensiana (Bong.)Carr. Mountain Hemlock. Pinaceae -- Pine family. Joseph E. Means. Mountain hemlock (Tsuga mertensiana) is usually found on cold, snowy subalpine sites where it grows slowly, sometimes attaining more than years in age. Arborescent individuals that have narrowly conical crowns until old age ( to years) and shrubby krummholz on cold, windy sites near .


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Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon by David W. Hann Download PDF EPUB FB2

Research Bulletin 67 SD A45 no cop. 2 Mortality Equations for Individual Trees in the Mixed-Conifer Zone of Southwest Oregon David W. Hann Chao-Huan Wang. Mortality equations for individual trees in the mixed conifer zone of southwest Oregon Article (PDF Available) February with 32 Reads How we measure 'reads'.

Get this from a library. Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon.

[David W Hann; Chao-Huan Wang]. Data collected from temporary plots in stands were used to develop a logistic equation to predict the probability of death of an individual tree. Data from permanent plots in 24 stands were used to develop a maximum size-density line and a size-density trajectory to control the maximum basal area of the stand.

Equation coefficients were estimated for Pseudotsuga menziesii, Abies grandis and Cited by: Oregon State University. Forest Research Laboratory; Abstract: Equations for predicting the probability of a tree's dying in the next 5 years are presented for eight conifer and eight hardwood tree species from southwest Oregon.

A logistic equation form was used to characterize the probability of by: Equations are presented for predicting height to crown base (or bole ratio) for fourteen species of trees common to the mixed-conifer zone of southwest Oregon.

Mixed Conifer and Hardwood Forest Management in Southwest Oregon 2 Fire exclusion and high-grade logging were the primary management influences on the property before the Mains acquired it in Since then, the Mains have used a combination of thinning-from-below and individual tree selection.

Future plans are to employ uneven-aged management,File Size: KB. product potential of individual trees, and it is used with height growth and mortality equations to compute basal area growth and volume growth of stands. This Bulletin presents equations to predict 5-year diameter increment, outside bark, for the following species in the mixed-conifer zone (Franklin and Dyrness ) of southwest Oregon:File Size: KB.

Equations for predicting individual-tree height growth per 5-year period are presented for Douglas-fir, white fir, grand fir, ponderosa pine, sugar pine, and incense-cedar growing in the mixed-conifer zone of southwest Oregon. The data used to develop the equations came from 3, trees sampled from stands in the study area.

Parame. for trees in the mixed conifer zone of southwest Oregon. Forest Research Lab., Oregon State University, Corvallis, Oregon.

Research Contribution 34p. (2, KB) Hann, D.W. and M.L. Hanus. Enhanced diameter-growth-rate equations for undamaged and damaged trees in southwest Oregon.

Individual Tree Selection (ITS) in a Northeast Oregon Mixed Conifer Forest 2 trees with his students on the Tillamook Burn and received a statewide teacher of the year award. Both loved the outdoors and the joys of living off the land. After searching for the perfect forest refuge, they found what they were looking for near Elgin, Oregon.

Enhanced mortality equations for trees in the mixed conifer zone of southwest Oregon. Forest Research Lab., Oregon State University, Corvallis, Oregon. Research Contribution 34p. Hann, D.W. and M.L. Hanus.

Enhanced diameter-growth-rate equations for undamaged and damaged trees in southwest Oregon. Pruned trees had only 27% of the mortality of unpruned trees when less than half of the crown was scorched (p = ).

However the mortality of pruned trees showed no less sensitivity to fire damage at higher levels of crown scorch (p = ); in fact extremely scorched trees Cited by: 6.

Ecology of Southwestern Ponderosa Pine Forests and Fletcher ; USFS ,a, %). These types can be combined into 3 major groups, based on similari- ties in structure, composition, and fire response.

The fringe pine forest types are at dry, warm, lower el- Cited by: Southwestern mixed-conifer forests vary in composition throughout Arizona and New Mexico, but they are usually divided into two types: a warm–dry type and a cool–moist type (Jones, ).The warm–dry type frequently occurs at lower elevation, on south-facing slopes and often contains ponderosa pine (Pinus ponderosa), whereas the cool–moist type frequently occurs at higher elevation, on Cited by: MORTALITY ASSESSMENT OF REDWOOD AND MIXED CONIFER FOREST.

TYPES IN SANTA CRUZ COUNTY FOLLOWING WILDFIRE. By Steve R. Auten. On Augthe Lockheed Fire ignited the west slope of the Santa Cruz Mountains burning approximately 7, acres. Foresters and other land managers were left with challenging decisions on how to evaluatetree.

information on the ecology and management of mixed-conifer forests east of the Cascade Range in Oregon and Washington. Of particular concern are the moist mixed-conifer forests, which have become drought-stressed and vulnerable to high-severity fire after decades of human disturbances and climate warming.

This synthesis responds to this by: westem trees are the equations of King () and Bruce () for Douglas—fir and the equations of Barrett () for ponderosa pine.

A single-tree 'distance—independent (Munro ) model is currently being developed for the mixed conifer zone (Franklin and Dymess ) of southwest Oregon by the. Mixed Conifer Forests An Overview Thomas Spies PNW Research Station December 4, Old growth mixed-conifer Central Oregon •Low—% canopy tree mortality •Mixed % canopy mortality •High > 70% mortality 10% 20% 40% 70% Agee   Mean mortality remained static from to (4,and trees/ha for Palomar, Volcan, and Laguna) and then increased by to, and trees/ha, respectively.

The increase in mortality between and represents the temporal pattern of a discrete disturbance event, attributable to the – : Mary Pyott Freeman, Mary Pyott Freeman, Douglas A.

Stow, Li An. Very dense forests (> trees/ha) were found across only 9% of pine, but 23% of pine and piñon-juniper, 36% of dry mixed conifer, 47% of moist mixed conifer, 19% of dry forests, and 25% of the montane, Historical tree density was highly spatially variable, with a CV of % across montane pools and 69%–% across pools in individual : William L.

Baker.Regeneration in mixed conifer partial cuttings in the Blue Mountains of Oregon and Washington / Related Titles. Series: Research paper PNW ; By. Seidel, Kenneth W. Head, S. Conrade. Pacific Northwest Forest and Range Experiment Station (Portland, Or.) Type.

Book.Title. Regeneration in mixed conifer clearcuts in the Cascade Range and the Blue Mountains of Eastern Oregon / Related Titles. Series: Research paper PNW ; By. Seidel, Kenneth W. Pacific Northwest Forest and Range Experiment Station (Portland, Or.) United States.