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Filtering by: Creator Poudel, Krishna Remove constraint Creator: Poudel, Krishna Academic Affiliation Forest Engineering Resources and Management Remove constraint Academic Affiliation: Forest Engineering Resources and Management

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  • 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:
    Biomass AN ABSTRACT OF THE DISSERTATION OF Krishna P. Poudel for the degree of

  • 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:
    , support, and mentorship needed to complete this process. Dr. Krishna Poudel for his wonderful and

  • 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:
    support. I would like to thank Dr. Krishna Poudel for providing me with his knowledge and time with data

  • Measuring and Modeling the Structure of Coniferous Trees with Point Clouds Data

    Creator:
    Fang, Rong
    Abstract:
    Coniferous trees are a major North American crop that has been intensively managed for its commercial value, while also serving as critical habitat for abundant wildlife and as carbon sinks. Having diverse functions, North American temperate coniferous forests have become a research hotspot for numerous scientific studies aiming to integrate...
    Resource Type:
    Dissertation
    Full Text:
    equation of Poudel et al. (2018). VolumeC05, VolumeC1, and VolumeC2 are volumes of direct cylinder

  • Effects of Subsampling Trees and Imputation Methods on the Accuracy of Height-to-Crown-Base Predictions for Douglas-fir in Southwest Oregon

    Creator:
    Allensworth, Elijah J.
    Abstract:
    Accurate estimates of height-to-crown-base (HTCB) are essential for the reliable projections of stand structure over time required for sustainable forest management. Yet, HTCB often measured alongside total height (HT) for only for a subsample of trees in traditional stand-based inventories and must be imputed for all others. We compared the...
    Resource Type:
    Masters Thesis
    Full Text:
    peers. To Krishna Poudel, who was an excellent statistics tutor, a better friend, and the second-best

  • 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
    Full Text:
    to Krishna Poudel and Joonghoon Shin for all the statistical advice, and for the valued camaraderie

  • Multi-temporal LiDAR Analysis of Landscape Fire Effects in Southwestern Oregon

    Creator:
    Hoe, Michael
    Abstract:
    Quantitative assessments of post-fire effects are key to improving our understanding of ecosystem resilience. While remote sensing technology has allowed us to assess post-fire landscape effects, we are often limited by the lack of information related to pre-fire forest attributes. As a result, our ability to interpret fire effects in...
    Resource Type:
    Masters Thesis
    Full Text:
    enthusiasm, support, and ideas; Elijah Allensworth, Krishna Poudel, Steven Huff, Joonghoon Shin, Karin

  • 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
    Full Text:
    chapter 2. And thanks to FMBL members, Dr. Krishna Poudel, Dr. Francisco Mauro, Dr. Jacob Strunk, Karin

  • Aerial Laser Scanning for Forest Inventories: Estimation and Uncertainty at Multiple Scales

    Creator:
    Frank, Bryce M.
    Abstract:
    As remote sensing data continues to proliferate, development and assessment of methods that generate predictions of forest attributes is needed to inform operational use. For several decades, lidar data collected from aerial platforms has informed assessments of forest resources, but many opportunities remain for the technology. We examine and develop...
    Resource Type:
    Dissertation
    Full Text:
    , Karin Kralicek, Joonghoon Shin, Jake Putney, Krishna Poudel, and Quinton Big Knife. One must stand

  • Estimation and modeling of selected forest metrics with lidar and Landsat

    Creator:
    Strunk, Jacob L.
    Abstract:
    Lidar is able to provide height and cover information which can be used to estimate selected forest attributes precisely. However, for users to evaluate whether the additional cost and complication associated with using Lidar merits adoption requires that the protocol to use lidar be thoroughly described and that a basis...
    Resource Type:
    Dissertation
    Full Text:
    , Krishna Poudel, Zane Haxton, and Junhui Xao. Too many to name, I am also indebted to my fellows in the