Index Catalog // ScholarsArchive@OSU

Disaggregative and individual-tree growth models in theory and application

Creator:: Ritchie, Martin W.
Abstract:: Disaggregative and individual-tree/distance-independent modeling methods are compared and contrasted. Differences between the two are related to differences in functional and apparent resolution and may be illustrated using aggregation theory. When considering models of different levels of resolution describing a given phenomenon, invariance with respect to the aggregation implied (symmetry) may...
Resource Type:: Dissertation

A stochastic analysis of erosion and economic impacts associated with timber harvests and forest roads

Creator:: McNutt, James Allen
Abstract:: A complex and sometimes serious problem facing modern day forest managers is that of estimating and analyzing potential on-site impacts which result from forest activities. A major type of adverse impact is man-Initiated forest erosion. This consequence can be substantially magnified when forest harvest and road activities are implemented in...
Resource Type:: Dissertation

A comparison of prediction models for cover type transitions and their effects on harvest schedules in coastal Oregon

Creator:: Eng, Helge
Abstract:: There is considerable uncertainty associated with stand establishment in coastal Oregon. Several species can gain control of the site depending on stand conditions as well as management practices. In this study, three cover type transition models were developed using data from the Siuslaw National Forest to predict stand establishment patterns...
Resource Type:: Dissertation

Optimizing the primary forest products supply chain : a multi-objective heuristic approach

Creator:: Hamann, Jeff D.
Abstract:: This thesis is a collection of four submitted manuscripts that present methods to assist forest ecosystem service managers wanting to develop operational sampling, monitoring, and production plans for a set of specific quantifiable ecosystem services, which are formulated as a series of general multi-objective optimization problems. The problems are solved...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 3. AN EXAMINATION OF DESIGN-BASED AND MODEL-BASED SAMPLING FOR PRIMARY FOREST PRODUCTS SUPPLY

A coupled hydrologic-geomorphic model for evaluating effects of vegetation change on watersheds

Creator:: Duan, Jinfan
Abstract:: This work describes the modeling framework and initial results for CLAWS (Coupled Landscape And Water System), a physically-based, spatially-distributed hydrologicgeomorphic model that has been coupled with a vegetation dynamics simulation. Spatial variability of topography, soil, vegetation, and climate drive a hydrology module that calculates the water budget at given time...
Resource Type:: Dissertation

Economic analysis of integrating spatial concerns into harvest scheduling

Creator:: Yoshimoto, Atsushi
Abstract:: An analytical algorithm to formulate a sparser set of adjacency constraints than the conventional algorithm is proposed. Utilizing matrix algebra applied to an adjacency matrix, constraints are systematically and efficiently derived by the proposed algorithm. The proposed algorithm is proved to provide a true set of adjacency constraints in the...
Resource Type:: Dissertation

Strategies for sampling and estimation of aboveground tree biomass

Creator:: Poudel, Krishna Prasad
Abstract:: The issue of global climate change and an increasing interest in the reduction of fossil fuel carbon dioxide emissions by using forest biomass for energy production has increased the importance of quantifying forest biomass in recent years. The official U.S. forest carbon reporting is based on the forest biomass estimates...
Resource Type:: Dissertation
Full Text:: Eskelson et al. (2011) and to model percent 6 canopy cover in a conifer forest by Korhonen et

Spatially explicit inter-temporal forest management decision under the risk of fire

Creator:: Konoshima, Masashi
Abstract:: This paper presents a framework for analyzing efficient spatial allocation of forest management efforts - fuel treatment and harvest - under the risk of fire. The framework integrates a fire behavior model and a spatially-explicit stochastic dynamic optimization model. I investigate the effects of spatial interaction across plots during forest...
Resource Type:: Dissertation
Full Text:: fire simulation model and an optimiza- tion model to examine the optimal forest management strategy

A policy preference function analysis of the forest sector in the Cote d'Ivoire

Creator:: Yapi, Atse
Abstract:: The main objective of this study was to offer an alternative methodology for forest sector modeling in developing economies. To this effect, a policy preference function was developed and estimated using data from the forest sector of the Cote d'Ivoire. The justification for this alternative framework for forest sector analysis...
Resource Type:: Dissertation
Full Text:: Function Model 40 3.2.1 General Structure of the PPF Model 41 3.2.2 Mathematical Form of the PPF 45 3.2.3

Analysis methods for modeling tree and stand growth responses to fertilization and thinning

Creator:: Wang, Chao-huan
Abstract:: This paper describes methods that can be used to evaluate stand and tree growth response to a single application of fertilization and/or thinning with data collected from multiple installations. Two kinds of methods were proposed: (1) structure analysis which applies covariance analysis in a blocked design with and without sampling...
Resource Type:: Dissertation

ScholarsArchive@OSU

Disaggregative and individual-tree growth models in theory and application

A stochastic analysis of erosion and economic impacts associated with timber harvests and forest roads

A comparison of prediction models for cover type transitions and their effects on harvest schedules in coastal Oregon

Optimizing the primary forest products supply chain : a multi-objective heuristic approach

A coupled hydrologic-geomorphic model for evaluating effects of vegetation change on watersheds

Economic analysis of integrating spatial concerns into harvest scheduling

Strategies for sampling and estimation of aboveground tree biomass

Spatially explicit inter-temporal forest management decision under the risk of fire

A policy preference function analysis of the forest sector in the Cote d'Ivoire

Analysis methods for modeling tree and stand growth responses to fertilization and thinning

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