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Effect of thinning and fertilization on wood properties and intra-ring characteristics in young Douglas-fir

Creator:: Bodner, Josef
Abstract:: The purpose of this study was to determine if thinning, fertilization or a combination of thinning and fertilization had an effect on overall average specific gravity, modulus of elasticity, modulus of rupture, fiber length and intra-ring characteristics. Material for this experiment consisted of 7 trees randomly selected from each of...
Resource Type:: Masters Thesis
Full Text:: LITERATURE REVIEW 3 Effect of Thinning and Fertilization on Forest Stand 3 Yield and Growth Effect of

Decomposition and nitrogen dynamics of red alder and Douglas-fir leaf litter in Oregon Coast Range riparian forests

Creator:: Matkins, Joselin
Abstract:: I examined factors regulating decomposition rates of red alder (Alnus rubra)) and Douglas-fir (Pseudotsuga menziesii) leaf litter in Coast Range riparian areas in western Oregon. Overall, this study was designed to examine the influence that leaf litter quality characteristics and decomposition site treatment have on decomposition rates, to provide a...
Resource Type:: Masters Thesis
Full Text:: characterization of the 8 research sites .......... 108 2.2. Litterfall, forest floor, and soil characteristics

The influence of contemporary forest management on stream nutrient concentrations in an industrialized forest in the Oregon Cascades

Creator:: Meininger, William Scott
Abstract:: The increased demand for wood and fiber from a continually shrinking land base has resulted in the use of intensively managed forest plantations. The concentration of timber production on the most suitable sites allows the world's demand for forest products to be met on less land and enable native forests...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF William Scott Meininger for the degree of Master of Science in Forest

Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range

Creator:: Urie, Dean Howard
Resource Type:: Masters Thesis
Full Text:: INVESTIGAI IONS Attempts to classify forest land according to produc- tivity by use of soil

A method of forest soil-site quality investigation

Creator:: Collins, Dana Huntley
Resource Type:: Masters Thesis

Hydrologic properties of soil and subsoil on a steep, forested slope

Creator:: Ranken, Darrel Wesley
Abstract:: The purpose of this study was to examine certain hydrologic properties of the soil and subsoil on a steep forested slope and relate these -rceTties to the movement of water via subsurface routes. The hydrologic properties examined were bulk density, soil texture, total porosity, pore size distribution, saturated hydraulic conductivity,...
Resource Type:: Masters Thesis

Amount and chemical composition of understory vegetation in Alsea basin forest communities

Creator:: Tarnócai, Charles
Abstract:: The understory vegetation was sampled in eight plant communities of a Douglas-fir ecosystem to determine the organic matter production and mineral composition. Four sample sites were selected in each plant community and the understory vegetation sampled using the method of quadrats of successively increasing size. All herbaceous plants were separated...
Resource Type:: Masters Thesis
Full Text:: group their components into a number of categories such as: soil, forest floor, understory, and

Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores

Creator:: Newman, Joseph Paul
Abstract:: Effects of three mulches of tree foliage and twigs (red alder, Douglas-fir, and salal) and homogenized, partially decomposed material (forest floor) on soil macronutrients (Ca, K, Mg, P, NO3, and NH4) were evaluated in the summer of 1997. These effects were measured with buried, coated ion-exchange resin bags at two...
Resource Type:: Masters Thesis

First year development of three conifers on surface and exposed subsoil horizons

Creator:: Cochran, Patrick Holmes, 1937-
Resource Type:: Masters Thesis
Full Text:: ) reviewed sorne foreign papers on the relation of forest tree root developrnent to soil horl- zons. They

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

ScholarsArchive@OSU

Effect of thinning and fertilization on wood properties and intra-ring characteristics in young Douglas-fir

Decomposition and nitrogen dynamics of red alder and Douglas-fir leaf litter in Oregon Coast Range riparian forests

The influence of contemporary forest management on stream nutrient concentrations in an industrialized forest in the Oregon Cascades

Soil-site relationships in second growth Douglas-fir stands in the central Oregon coast range

A method of forest soil-site quality investigation

Hydrologic properties of soil and subsoil on a steep, forested slope

Amount and chemical composition of understory vegetation in Alsea basin forest communities

Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores

First year development of three conifers on surface and exposed subsoil horizons

Analysis of variability of some forest soils in southwestern Oregon

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