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The effects of mycorrhizal colonization and phosphorus fertilization on Douglas-fir seedling growth, morphology, and photosynthesis

Creator:: Black, C. H. (Charles H.)
Resource Type:: Dissertation
Full Text:: Methods Results and Discussion Literature Cited 105 106 106 107 109 113 121 BIBLIOGRAPHY 123 LIST

Surface erosion on a clearcut in the Willamette National Forest

Creator:: George, Danella
Resource Type:: Masters Thesis
Full Text:: National Forest; the Department of Soil Science, Oregon State University, the PNW Range and Forest

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:: Mountains compressed in one-dimensional consolidation tests (n=109). Bulk density of undisturbed core

Weathering rate, nutrient supply, and denudation in forested watersheds, southwestern Idaho batholith

Creator:: Clayton, James L. (James Lindow), 1942-
Abstract:: Biogeochemical data from four small watersheds in the Silver Creek study area, southwestern Idaho, provide the basis for: 1. An estimate of chemical and erosional denudation rates (CD and ED), 2. an estimate of plagioclase weathering rate, 3. a rational basis for estimating the rate of nutrient supply to soil...
Resource Type:: Dissertation
Full Text:: precipitation, cmt 1.86 112 1.18 109 1.09 98 1.62 99 Annual water yield, cm# 43.7 46.7 34.2 30.4

Effects of slash burning on surface soil erosion rates in the Oregon Coast Range

Creator:: Bennett, Karen Ann
Resource Type:: Masters Thesis

Measured and modeled energy balance parameters to evaluate the environmental conditions of reforestation

Creator:: Flint, Alan L.
Abstract:: In order to develop three models for use in quantifying the environmental conditions of reforestation, extensive measurements required for energy balance calculations were taken for a reforestation site in southwest Oregon. The models are used to decrease the number of measurements required to properly evaluate the potential for heat or...
Resource Type:: Dissertation
Full Text:: (PNW-80-85), a cooperative project of Oregon State University, the USDA Forest Service, and the USDI

Soil variability on steep, skeletal forested slopes of the Umpqua National Forest, Oregon

Creator:: Myhrum, Ronald P.
Abstract:: This study was undertaken to determine both the amount and the spatial variability of sand, silt, clay, and six fractions of coarse fragments in soils representing harsh sites for reforestation. Particle size data were collected because of their direct relationship to water holding capacity and the plantability and survivability of...
Resource Type:: Masters Thesis
Full Text:: is moderate, but minimum and maximum temperatures at Roseburg have ranged from -6 degrees F to 109

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:: A and B horizons of both MU 93 20 Example of optimal allocation of samples for % OM in MU 74 109

Genesis of some soils in the central western Cascades of Oregon

Creator:: Brown, R. B.
Abstract:: Soils representative of several landscape units in the H. J. Andrews Experimental Forest, Western Cascade Range, were sampled, analyzed, and tentatively classified. Genetic inferences were drawn relating soils to landscape position and other factors of soil formation. Descriptive information and nutrient capital data were provided to support ecosystem modelling efforts...
Resource Type:: Masters Thesis

Plant biomass and nutrient distribution in a young Pseudotsuga menziesii forest ecosystem

Creator:: Webber, Bruce Douglas
Resource Type:: Dissertation
Full Text:: Nutrient Distribution Patterns 106 a) Soils 106 b) Understory Component 109 c) Tree Component 110 i

ScholarsArchive@OSU

The effects of mycorrhizal colonization and phosphorus fertilization on Douglas-fir seedling growth, morphology, and photosynthesis

Surface erosion on a clearcut in the Willamette National Forest

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

Weathering rate, nutrient supply, and denudation in forested watersheds, southwestern Idaho batholith

Effects of slash burning on surface soil erosion rates in the Oregon Coast Range

Measured and modeled energy balance parameters to evaluate the environmental conditions of reforestation

Soil variability on steep, skeletal forested slopes of the Umpqua National Forest, Oregon

Analysis of variability of some forest soils in southwestern Oregon

Genesis of some soils in the central western Cascades of Oregon

Plant biomass and nutrient distribution in a young Pseudotsuga menziesii forest ecosystem

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