Index Catalog // ScholarsArchive@OSU

Accuracy and suitability of several stand sampling methods in riparian zones

Creator:: Marquardt, Theresa
Abstract:: Stand structure in headwater riparian areas of western Oregon is highly variable making quantification of structural attributes within these stands difficult. A reliable sampling design is important to characterize and monitor changes in stand structure over time. This study examined sixteen alternatives for sampling live conifers and six alternatives for...
Resource Type:: Masters Thesis
Full Text:: Riparian Zones. February 22, 2010. Abstract approved

Empirical modeling of windthrow occurrence in streamside buffer strips

Creator:: Drake, Timothy P.
Abstract:: Streamside buffer strips provide numerous benefits to stream ecosystems. The buffer strips create shade, provide shelter for wildlife, act as barriers to logging debris during and after timber harvest, and serve as a continued source of large woody debris. Quantifying woody inputs resulting from windthrow provides managers with estimates for...
Resource Type:: Masters Thesis
Full Text:: conducted on 22 stream reaches in the Coast Range and western foothills of the Cascade Range of Oregon

Evaluation of Taper and Volume Estimation Techniques for Ponderosa Pine in Eastern Oregon and Eastern Washington.

Creator:: Pancoast, Alexander D.
Abstract:: The growing need for accurate forest biomass and carbon estimates has sparked a recent re-examination of direct volume estimation and taper modeling techniques. Additionally, the need for increased precision of biomass and carbon estimates drives a need to improve the techniques used to evaluate these models. Taper equations have an...
Resource Type:: Masters Thesis
Full Text:: coefficients provided by the PNW- FIA and V2 uses coefficients estimated from sample data. 𝛽2 has changed

Error propagation in estimating aboveground biomass using terrestrial LiDAR

Creator:: Shettles, Michael A.
Abstract:: Broad-scale estimates of above ground forest biomass (AGB) are typically produced by applying individual-tree equations to inventory data consisting of measurements from probabilistically or purposively selected trees. The associated uncertainty for these estimates depends primarily on three sources of error that interact and propagate: (1) measurement error, the quality of...
Resource Type:: Masters Thesis

Forest Soils and Topography : Decoding the Influence of Physical Site Characteristics on Soil Water and Forest Productivity in Oregon's Coast Ranges

Creator:: Rodman, Henry
Abstract:: Forest soils and topography have long been known to influence forest productivity in complex terrain such as Oregon’s Coast Ranges. Incorporating physical site characteristics into predictions of forest growth and yield, however, has been problematic because of the high spatial variability of soil properties and the challenges associated with representing...
Resource Type:: Masters Thesis
Full Text:: in the Panther Creek and southwestern Oregon soil pits. . . . . . . . . . . . . . . . . . . 22 2.4

Evaluating the accuracy of imputed forest biomass estimates at the project level

Creator:: Gagliasso, Donald
Abstract:: Various methods have been used to estimate the amount of above ground forest biomass across landscapes and to create biomass maps for specific stands or pixels across ownership or project areas. Without an accurate estimation method, land managers might end up with incorrect biomass estimate maps, which could lead them...
Resource Type:: Masters Thesis
Full Text:: ............................................................................................................. 22 Table 3: Coefficient and standard errors for linear regression model for basal area (ft 2 per

Quantifying Aboveground Biomass for Common Shrubs in Northeastern California

Creator:: Huff, Steven
Abstract:: Quantifying biomass is important for sustainable forest management. The purpose of this study is to obtain allometric relationships for seven species of shrubs common in northeastern California so that estimates of carbon and fuel loading may be better realized. Although some shrub biomass equations exist, such equations are limited in...
Resource Type:: Masters Thesis
Full Text:: biomass. Northern Journal of Applied Forestry, 5(1): 15-22. Elzein, T.M., Blarquez, O., Gauthier, O. and

Taper, crown, and volume responses of a coastal Oregon Douglas-fir stand to sulfur treatments for control of Swiss needle cast

Creator:: Younger, Nicole L.
Abstract:: For nearly two decades, foresters in the Oregon Coast Range have been witnessing a substantial decease in Douglas-fir (Pseudotsuga menziesii var. menziesii [Mirb.] Franco.) vigor and growth, caused by Swiss needle cast (Phaeocryptopus gaeumannii). Currently, no solutions are in sight but aerially-applied sulfur may alleviate Swiss needle cast and its...
Resource Type:: Masters Thesis
Full Text:: susceptible but the recently vigorous 11 SNC in the PNW has not followed this rule, attacking even

Predicting urban tree attributes for major species in urbanized areas of the western Pacific states

Creator:: Jeroue, Lacey M.
Abstract:: Urban forests are an essential green infrastructure of our cities. Due to the proximity of urban trees to more than 250 million people and the grey infrastructure within United States cities, urban forests are uniquely positioned to provide a host of social, environmental and economic benefits. Careful management that maximizes...
Resource Type:: Masters Thesis
Full Text:: residential areas with 70% tree density were reduced by 65% in winter and 75% in summer compared to 22

Estimating Forest Inventory Attributes Using Airborne LiDAR in Southwestern Oregon

Creator:: Shin, Joonghoon
Abstract:: This thesis mainly consists of two parts: (1) comparing statistical modeling methods based on the area-based approach (ABA) for predicting forest inventory attributes using airborne light detection and ranging (LiDAR) data (Chapter 2), and (2) suggesting a new methodology fusing the individual tree detection (ITD) approach and the ABA for...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Accuracy and suitability of several stand sampling methods in riparian zones

Empirical modeling of windthrow occurrence in streamside buffer strips

Evaluation of Taper and Volume Estimation Techniques for Ponderosa Pine in Eastern Oregon and Eastern Washington.

Error propagation in estimating aboveground biomass using terrestrial LiDAR

Forest Soils and Topography : Decoding the Influence of Physical Site Characteristics on Soil Water and Forest Productivity in Oregon's Coast Ranges

Evaluating the accuracy of imputed forest biomass estimates at the project level

Quantifying Aboveground Biomass for Common Shrubs in Northeastern California

Taper, crown, and volume responses of a coastal Oregon Douglas-fir stand to sulfur treatments for control of Swiss needle cast

Predicting urban tree attributes for major species in urbanized areas of the western Pacific states

Estimating Forest Inventory Attributes Using Airborne LiDAR in Southwestern Oregon

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