Graduate Thesis Or Dissertation
 

Quantifying Aboveground Biomass for Common Shrubs in Northeastern California

Öffentlich Deposited

Herunterladbarer Inhalt

PDF Herunterladen
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/9g54xm50x

Descriptions

Attribute NameValues
Creator
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 sample size and geographic scope. In this study, predictive equations were developed for shrub species using available metrics that relate crown area, basal area, plant height, and stem diameter to the dried weight of total, leaf, 1-hour, 10-hour, 100-hour, and 1,000-hour biomass components. Nonlinear least squares regression was used to obtain parameter estimates via an allometric (power) model. Seemingly unrelated regression (SUR) was used to formulate biomass equations for each shrub species. The resulting system of equations offer a reference for land managers and researchers interested in biomass assessment. Multinomial log-linear regression (MLR) was used to obtain predicted proportions of each shrub species biomass component and was consistent in producing low values of RMSE%. Nonlinear mixed effects models (NMEM) were used to estimate biomass component by species in Chapter 3. The use of NMEM in this setting was beneficial in explaining within subject biomass and allometry in the seven shrub species. The equations resulting from this research are applicable to areas within northeastern California where similar climate, vegetation associations, and soils may be found in relation to the study area for which this research occurred.
License
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Urheberrechts-Erklärung
Publisher
Peer Reviewed
Language
Replaces

Beziehungen

Parents:

This work has no parents.

In Collection:

Artikel

Miniaturansicht Titel Hochladedatum Sichtbarkeit Aktionen
file details HuffStevenE2016.pdf 2017-08-09 Öffentlich Herunterladen