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Filtering by: Creator Strimbu, Bogdan M. Remove constraint Creator: Strimbu, Bogdan M. Degree Field Sustainable Forest Management Remove constraint Degree Field: Sustainable Forest Management Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • Assessment of the Impact of Forest Management Activities on Forest Aesthetics Using Photogrammetric Point Clouds

    Creator:
    Begay, Bryan E.
    Abstract:
    The public concern for clearcutting in the United States in the 1970s pushed for changes in the natural resources policies. A facet of forest management that came under scrutiny was forest aesthetics. Therefore, the aim of this study is to assess the impact of harvest designs on stand aesthetics using...
    Resource Type:
    Masters Thesis
    Full Text:
    Bogdan M. Strimbu The public concern for clearcutting in the United States in the 1970s pushed

  • Landscape Inventory and Harvest Strategies for Individual Western Juniper in Eastern Oregon

    Creator:
    Schriver, Robert
    Abstract:
    Western juniper is a native species in eastern Oregon that became invasive during the last century since its range increased fivefold from 1936 to 1988. Western juniper’s ability to absorb rainfall and groundwater has deleterious effects on stream flow and sensitive sage grouse habitat in eastern Oregon. New methods of...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: ______________________________________________________ Bogdan M Strimbu

  • Individual Tree Detection and Measurement from Terrestrial Point Cloud

    Creator:
    Qi, Chu
    Abstract:
    Remote sensing forest inventory gained increased attention in the last decade triggered by the decrease in the price of sensors and the explosion of data availability and formats. Evermore, the constant advances in the hardware processing the data emphasized the necessity to develop algorithms to extract forest relevant information from...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Bogdan M. Strimbu Remote sensing forest inventory gained increased attention in the last

  • Estimation of surface canopy water in Pacific Northwest forests by fusing radar, lidar, and climatic data

    Creator:
    Heffernan, Scott A.
    Abstract:
    Surface Canopy Water (SCW) is the intercepted rain water that resides within the tree canopy and plays a significant role in the hydrological cycle. Challenges arise in measuring SCW in remote areas using traditional ground based techniques. Remote sensing in the radio spectrum has the potential to overcome the challenges...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Bogdan M Strimbu Surface Canopy Water (SCW) is the intercepted rain water that resides

  • Estimation of Soil Particle Size Distribution using CT Scans

    Creator:
    Boath, Max E.
    Abstract:
    Remote sensing techniques have been applied extensively in geospatial investigations, but their use in measuring soil physical attributes has been far less explored. Soil particle size distributions (PSD) are indispensable in modeling pedological and hydrological processes as well as biodiversity. However, estimation of PSD via gravimetric measurement methods, the standard...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Bogdan M. Strimbu ABSTRACT Remote sensing techniques have been applied extensively in

  • Classification strategies for unbalanced binary maps : finding Ponderosa pine in the Willamette Valley

    Creator:
    Riddell, Audrey P.
    Abstract:
    Forest species classifications are becoming increasingly automated as advances are made in machine learning. The algorithms used to identify tree species range from simple decision trees to intricate neural networks, and often excel in accurately delineating tree species. However, complex algorithms can have high input costs, including the cost of...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Stephen A. Fitzgerald Bogdan M. Strimbu Forest species classifications are becoming

  • Sensitivity of Forest Structure Estimation to UAS-Based Data Processing Algorithms

    Creator:
    Maturbongs, Bonifasius Y. L
    Abstract:
    Forests should be monitored and measured frequently to ensure its sustainability and continuity of carbon sequestration. However, conventional monitoring methods are costly and labor intensive. New technologies, such as unmanned aircraft systems (UAS) can be used as an alternative method to monitor and measure forests. The objective of this study...
    Resource Type:
    Masters Thesis
    Full Text:
    Wing and Dr. Bogdan Strimbu for their invaluable support and guidance; to Jonathan Burnett and

  • Estimating Tree Defect and Log Quality with Terrestrial Structure from Motion Photogrammetry and Handheld LiDAR

    Creator:
    Morgan, Carli J.
    Abstract:
    Forest inventories are periodic resource assessments that can estimate items such as timber volume and value, tree growth rates, carbon sequestration, forest health status, wildlife habitat, fuel loading, and more. Traditional inventories require a large investment of resources and well-trained workforce. To date, most foresters and timber cruisers inventory forests...
    Resource Type:
    Masters Thesis
    Full Text:
    edits. Dr. Bogdan Strimbu served as the remote sensing subject matter expert. He helped with early

  • Leveraging multi-sensor time series datasets to map short- and long-term forest disturbances and drivers of change in the Colombian Andes

    Creator:
    Murillo Sandoval, Paulo Jose
    Abstract:
    The spatial distribution of forest disturbance is commonly calculated using a satellite imagery-driven bi- or tri-temporal change analysis. Working in Colombia’s Cordillera de los Picachos National Natural Park – a region of consistent cloud cover and dramatic topographic relief – a change assessment with such infrequent observations cannot capture long-term...
    Resource Type:
    Masters Thesis
    Full Text:
    in early 2007 with a magnitude (M) of -0.35 but is not detected in 2008 or 2009. The historical

  • Pacific Madrone Leaf Blight Detection with Unmanned Aerial Systems and Machine Learning

    Creator:
    Barker, Matthew I.
    Abstract:
    Ground-based assessments of foliar diseases including leaf blight are time-consuming and costly. We investigated the potential for using an unmanned aerial system (UAS) in conjunction with a multispectral sensor to determine whether we could more efficiently and reliably detect and quantify leaf blight in Pacific madrones. Our methods included ground-based...
    Resource Type:
    Masters Thesis
    Full Text:
    sincere gratitude to the members of my graduate committee: Dr. Jonathan Burnett, Dr. Bogdan Strimbu