Index Catalog // ScholarsArchive@OSU

Analysis of variability of some forest soils in southwestern Oregon

Creator:: Wicherski, Bruce P.
Abstract:: The variability of selected physical, chemical, and morphological soil properties in two landtype mapping units on'the Rogue River National Forest in southwestern Oregon was studied. The objectives of the study were (i) to quantify soil variability in several soil resource inventory mapping units, (ii) to explore methods of describing soil...
Resource Type:: Masters Thesis
Full Text:: Soil Science presented on August 29, 1980 Title: Analysis of Variability of Some Forest Soils in

Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon

Creator:: Brainerd, Richard E.
Abstract:: A greenhouse bioassay was used to compare ectomycorrhiza formation and diversity in soils from undisturbed and clearcut and burned areas in moist mesic, moist montane and dry montane forest types representing a gradient of environmental harshness. It was hypothesized that mycorrhiza diversity decreases with increasing environmental harshness and that stability...
Resource Type:: Masters Thesis

Overland flow and sediment production potentials in logged and nonlogged sites of a ponderosa pine forest in northeastern Oregon

Creator:: Williams, John Dana
Abstract:: The purpose of this research was to determine if overland flow and sediment production were different in logged (on snow, frozen soil, and prescribed skid trails) and nonlogged sites in a Pinus ponderosa Laws.! Symohoricaroos albus Laws. community in the foothills of the Wallowa Mountains in northeastern Oregon. To determine...
Resource Type:: Masters Thesis
Full Text:: and nonlogged sites of a ponderosa pine forest in northeastern Oregon AN ABSTRACT OF THE THESIS OF

Carbon fluxes across three climatically-distinct forest chronosequences in Oregon

Creator:: Campbell, John
Abstract:: Biometric and gas exchange techniques were used to measure soil respiration (soil surface CO₂ efflux) and NEP (Net Ecosystem Production) across three climatically-distinct forest chronosequences in Oregon. Results indicate significant forest type, age, and forest type x age interaction effects on annual soil respiration. A regional age class distribution skewed...
Resource Type:: Dissertation

Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon

Creator:: Strand, Robert Fenton
Abstract:: In 1957 three Douglas-fir stands (15-, 25-, and 40-year-old age classes) were selected on a tree farm in the Cascade foothills of northwestern Oregon to study factors affecting site productivity. Soil-moisture, soil-temperature and seasonal radial- growth pattern measurements were made with a Colman moisture meter and a dial gauge dendrometer...
Resource Type:: Dissertation

Soil physical properties and available water capacity of southwest Oregon forest soils

Creator:: Flint, Alan L.
Abstract:: Measurements for water retention calculations and physical characterization were made on skeletal and non-skeletal soils in southwest Oregon. A new bulk density sampler was designed for the physical characterization of the steep, skeletal soils commonly encountered in this area. The new sampler and the techniques required for the measurement and...
Resource Type:: Masters Thesis
Full Text:: Properties of southwest Oregon Forest Soils. 44 2 Correlation matrix for soil physical properties 46 and

Soil compaction from low ground-pressure, torsion-suspension logging vehicles on three forest soils

Creator:: Froehlich, Henry A. and Oregon State University. Forest Research Laboratory
Abstract:: Monitoring soil density on three sites during repeated trips with a high-speed skidder showed that: During the first 20 trips, soil density primarily increased between depths of 2 to 4 inches; Density increased most during the first few trips; Density continued to increase slowly in amount and depth with the...
Resource Type:: Technical Report
Full Text:: Corvallis. Oregon 97331 research paper 36 Since 1941, the Forest Research Laboratory-part of the School

Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades

Creator:: Heichen, Rachel S.
Abstract:: In this study, biological and chemical characteristics were determined for two high-elevation meadow-to-forest transitions located in the Central Oregon Cascades. The chloroform fumigation incubation method (CFIM) was used to determine microbial biomass C(MBC) and the N flush due to fumigation (NF), and meadow values were compared to forest values for...
Resource Type:: Masters Thesis
Full Text:: provided by Kirk Waterstripe, Department of Forest Science, Oregon State University. Respiration Soil

Consolidation, compression, and shear strength of four western Oregon forest soils

Creator:: McNabb, David H.
Abstract:: Forest soils with low bulk densities are often considered less susceptible to compaction than soils with higher bulk densities. The objective of this study was to determine if soil strength controlled the compression of soils with low bulk density. Four soils were selected for this evaluation. Three of these were...
Resource Type:: Dissertation
Full Text:: . III. 1. Relationship between bulk density of a sample of western Oregon forest soil, predicted with

Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon

Creator:: Borchers, Jeffrey G.
Abstract:: The effect of physical factors such as soil structure, bulk density, parent material, and topographic variables on soil C and N dynamics and ectomycorrhizal inocululu potential in forests of southwest Oregon were investigated In the high-elevation white fir (Abies concolor (Gord. & Glend.) Lindl.) zone, two old poorly-vegetated clearcuts with...
Resource Type:: Dissertation

ScholarsArchive@OSU

Analysis of variability of some forest soils in southwestern Oregon

Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon

Overland flow and sediment production potentials in logged and nonlogged sites of a ponderosa pine forest in northeastern Oregon

Carbon fluxes across three climatically-distinct forest chronosequences in Oregon

Soil and growth studies in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stands near Molalla, Oregon

Soil physical properties and available water capacity of southwest Oregon forest soils

Soil compaction from low ground-pressure, torsion-suspension logging vehicles on three forest soils

Biology and chemistry of a meadow-to-forest transition in the Central Oregon Cascades

Consolidation, compression, and shear strength of four western Oregon forest soils

Physical processes affecting soil biotic and abiotic responses to disturbance in forest ecosystems of southwestern Oregon

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