Index Catalog // ScholarsArchive@OSU

Tillage of compacted soil in a thinned Douglas-fir stand in western Oregon : soil density and residual tree growth seven years after treatment

Creator:: Martinez Ben, Jesus
Abstract:: A set of 119 study trees was identified in a 65 year-old Douglas-fir stand after a thinning operation conducted seven years ago using pre-planned skid trails and groundbased machinery. Some of the trails were tilled using a winged subsoiler after this operation in order to alleviate the effect of compaction...
Resource Type:: Capstone Project

Soil compaction on a mechanized timber harvest operation in eastern Oregon

Creator:: Zaborske, Richard R.
Abstract:: The use of mechanized harvest equipment has been increasing as an economical method to harvest small diameter timber. While the use of this equipment is increasing, little is known about associated soil compaction. In particular, little information exists on soil compaction caused by feller--bunchers. This study measured soil compaction caused...
Resource Type:: Capstone Project

The "great hope" : bioenergy in eastern Oregon and its implications for dry forest restoration

Creator:: Nuss, Meagan Louise
Abstract:: Oregon has been moving forward with biomass energy development. Large-scale biomass power and cogeneration (producing heat and electricity) have been the focus of the last twenty-five years, while small-scale thermal bioenergy installations (producing heat) have dramatically increased during the last decade. In eastern Oregon, bioenergy is closely linked to restoration...
Resource Type:: Masters Thesis
Full Text:: grateful to Committee Members Claire Montgomery, Paige Fischer, and Loren Kellogg. The author feels

Forest biomass estimation with hemispherical photography for multiple forest types and various atmospheric conditions

Creator:: Clark, Joshua Andrew
Abstract:: The importance of accurately identifying inventories of domestic energy, including forest biomass, has increasingly become a priority of the US government and its citizens as the cost of fossil fuels has risen. It is useful to identify which of these resources can be processed and transported at the lowest cost...
Resource Type:: Dissertation
Full Text:: Density Estimates…. 208 D Crown Weight Conversions……………………………….…………. 224 E Dry Crown Weight

Evaluation and application of ice segregation parameters for frost heave prediction

Creator:: Ito, Yuzuru, 1958-
Abstract:: The success of civil engineering construction in cold regions often depends on the assessment of the potential for frost heave. Over the past two decades two models have been presented to the engineering community to identify the frost heave potential, namely: (1) the segregation potential (SP), and (2) the discrete...
Resource Type:: Dissertation
Full Text:: professor, Ted S. Vinson. I also wish to thank the other members of my graduate committee, Loren D

Smallholder farmers’ decision making in farm tree growing in the highlands of Ethiopia

Creator:: Ayele, Zeleke Ewnetu
Abstract:: Past afforestation programs launched to promote private and community woodlots in rural Ethiopia have not been based on clear understanding of the incentives and constraints of smallholder farmers. This study investigated the characteristic differences between tree-growing and non-tree-growing farm households and identified factors influencing farmers’ tree-growing decisions from a farming...
Resource Type:: Dissertation
Full Text:: graduate committee, Professors K. Norman Johnson, Badege Bishaw and Loren D. Kellogg. Your contributions

Soil compaction and disturbance following a thinning of second-growth Douglas-fir with a cut-to-length and a skyline system in the Oregon Cascades

Creator:: Allen, Marganne Mary
Abstract:: Soil bulk density and disturbance were measured before and after a commercial thinning of 3 0-50 year-old Douglas-fir using a cut-to-length (CTL) and a skyline system on the Willamette National Forest in the Oregon Cascades. A dual-probe nuclear densimeter was used to measure bulk density at four and eight inches....
Resource Type:: Capstone Project
Full Text:: project. The input and time from my committee members Dr. Loren Kellogg and Dr. Jim Boyle was also

Aerial forest operations : mineral amendment project

Creator:: Cornell, Jennie L.
Abstract:: A helicopter operations problem was studied for a private forest landowner testing an experimental application of minerals on Douglas-fir (Pseudotsuga menziesil) in the Coast Range of Oregon to offset growth reductions from Swiss needle cast disease. A planning approach was needed to minimize costs for transportation and aerial application of...
Resource Type:: Capstone Project
Full Text:: committee, Dr. Mike Newton, Dr. John Sessions, and Dr. Loren Kellogg for their support, guidance and

The Effect of Downed-trees on Harvesting Productivity and Costs in Beetle-killed Stands

Creator:: Kim, Yaejun
Abstract:: The mountain pine beetle has impacted over 5 million hectares of pine forests in the Rocky Mountains region in the United States. Although some beetle-killed stands are available for salvage harvesting, there are many uncertainties in harvesting beetle-killed stands including safety, costs, recoverable products and their values. These uncertainties impose...
Resource Type:: Masters Thesis
Full Text:: Anderson, Dr. Loren Kellogg, and Dr. Jeff Morrell, for their accessibility and guidance throughout this

Managing woody biomass transportation for improved biomass economics

Creator:: Han, Sang-Kyun
Abstract:: With rising fuel costs and enhanced environmental concerns, the use of renewable energy has been steadily considered and widely expounded as a solution to the challenges of global energy security and climate change. The use of woody biomass, in particular, has received considerable attention for energy production due to the...
Resource Type:: Dissertation
Full Text:: Maguire, Dr. John Sessions, and Dr. Loren Kellogg for their invaluable help, support, guidance, and

ScholarsArchive@OSU

Tillage of compacted soil in a thinned Douglas-fir stand in western Oregon : soil density and residual tree growth seven years after treatment

Soil compaction on a mechanized timber harvest operation in eastern Oregon

The "great hope" : bioenergy in eastern Oregon and its implications for dry forest restoration

Forest biomass estimation with hemispherical photography for multiple forest types and various atmospheric conditions

Evaluation and application of ice segregation parameters for frost heave prediction

Smallholder farmers’ decision making in farm tree growing in the highlands of Ethiopia

Soil compaction and disturbance following a thinning of second-growth Douglas-fir with a cut-to-length and a skyline system in the Oregon Cascades

Aerial forest operations : mineral amendment project

The Effect of Downed-trees on Harvesting Productivity and Costs in Beetle-killed Stands

Managing woody biomass transportation for improved biomass economics

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