Index Catalog // ScholarsArchive@OSU

An efficient specification and solution method of the even-aged rotation and thinning problem

Creator:: Paredes-Veloso, Gonzalo L.
Abstract:: The problem of determining an optimal sequence of decisions in even-aged stand management is analyzed and solved with an alternative to the traditional dynamic programming network. The new method is derived independently from two different approaches to the problem: Network optimization and generalized LaGrange multipliers. Both derivations are presented. It...
Resource Type:: Masters Thesis

Structural and physiological changes with stand age : use of a process-based model to compare carbon and water fluxes in young and old-growth Douglas-fir/western hemlock forest stands

Creator:: Licata, Julian A.
Abstract:: Many studies have shown that net primary production in old-growth Douglas-fir/western hemlock forests is lower than in younger forests in similar sites, although the cause is still not clear. One possibility is that overall carbon assimilation, or GPP, is lower in older forests. However, it is difficult to measure GPP...
Resource Type:: Masters Thesis

The potential contribution of a diameter class matrix model to predict growth of mixed tropical forests

Creator:: Ebaa-Atyi, Richard
Abstract:: The study presents two main parts: first, a review of tropical silviculture and forest management systems and, second, the investigation of a growth and yield model which has some potential for application in the tropical region. The presentation of tropical silviculture includes: (1) an overview of the biological characteristics of...
Resource Type:: Masters Thesis

Estimating large woody debris recruitment from adjacent riparian areas

Creator:: Minor, Kathleen P.
Abstract:: Large woody debris recruitment to streams from adjacent riparian forests influences stream channel morphology, sediment routing, and fish habitat. A mathematical model was developed to 1) determine whether the trees in a stand adjacent to a stream, upon falling, would provide large woody debris of a specified size to the...
Resource Type:: Capstone Project

Inter-annual variability of net primary productivity across multiple spatial scales in the western Oregon Cascades : methods of estimation and examination of spatial coherence

Creator:: Woolley, Travis J.
Abstract:: Quantifying and modeling processes involved in the global carbon cycle is important to evaluate the temporal and spatial variability of these processes and understand the effect of this variability on future response to changing climate and land use patterns. Biomass accumulation and Net Primary Productivity (NPP) are large components of...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Forest Science presented on December 5. 2005. Title: Inter-annual Variability

An evaluation of an inventory projection system : TRIM model predictions vs. forest inventory field measurements in North Carolina

Creator:: Mills, John R.
Abstract:: As part of the effort to evaluate TRIM (Timber Resource Inventory Model) for the next RPA National Assessment, a study was conducted using natural pine stands in North Carolina. TRIM has been used for regional timber supply studies in both the Pacific Northwest and the South (Southern Timber Supply Study)....
Resource Type:: Masters Thesis

Seasonal snowcover dynamics beneath boreal forest canopies

Creator:: Link, Timothy E.
Abstract:: The accurate simulation of snowpack deposition and ablation beneath forested areas is confounded by the fact that the vegetation canopy strongly affects the snow surface energy balance. The canopy alters the radiation balance of the snowcover, and reduces the wind speed at the snow surface. Data collected as part of...
Resource Type:: Masters Thesis
Full Text:: snowpack beneath boreal forest canopies. 4.) Validate the model results using both automatically and

Private timber supply projections for western Oregon and Washington : a comparison with 1980 RPA timber supply estimates

Creator:: Flick, Dennis D.
Abstract:: The Timber Resource Analysis System (TRAS) was the timber supply projection model used in conjunction with the Timber Assessment Market Model (TAMM) to predict future U.S. softwood timber harvests, inventories and product prices in the 1980 RPA Timber Assessment conducted by the USDA Forest Service. Several criticisms of the TRAS...
Resource Type:: Masters Thesis

Congressional influence on Department of Justice merger decisions : a case study

Creator:: Goodwin, Diana K.
Abstract:: The purpose of this study is to analyze the possibility of political influence upon the Department of Justice merger decisions within the brewing industry. Political preference was measured by the congressional ratings of a liberal political action committee, The Americans for Democratic Action (ADA), thus giving a liberalness score. Regressions...
Resource Type:: Masters Thesis
Full Text:: through 1989 (0 otherwise). The model to determine possible political influence on DOJ merger

A water balance model for reforestation sites : description and sensitivity

Creator:: Costello, Craig
Abstract:: A model was developed for analysis of the soil water balance of individual reforestation sites in western Oregon. The numerical procedure for this model was programmed in compiled BASIC language and calculations for an entire season are made in about 180 seconds on an IBM AT microcomputer. The processes that...
Resource Type:: Masters Thesis
Full Text:: . Model estimates will also facilitate the consideration of forest management options regarding type of

ScholarsArchive@OSU

An efficient specification and solution method of the even-aged rotation and thinning problem

Structural and physiological changes with stand age : use of a process-based model to compare carbon and water fluxes in young and old-growth Douglas-fir/western hemlock forest stands

The potential contribution of a diameter class matrix model to predict growth of mixed tropical forests

Estimating large woody debris recruitment from adjacent riparian areas

Inter-annual variability of net primary productivity across multiple spatial scales in the western Oregon Cascades : methods of estimation and examination of spatial coherence

An evaluation of an inventory projection system : TRIM model predictions vs. forest inventory field measurements in North Carolina

Seasonal snowcover dynamics beneath boreal forest canopies

Private timber supply projections for western Oregon and Washington : a comparison with 1980 RPA timber supply estimates

Congressional influence on Department of Justice merger decisions : a case study

A water balance model for reforestation sites : description and sensitivity

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