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Articles 1 - 4 of 4
Full-Text Articles in Forest Sciences
Use Of Unmanned Aerial Vehicles (Uav) For Urban Tree Inventories, Brian Ritter
Use Of Unmanned Aerial Vehicles (Uav) For Urban Tree Inventories, Brian Ritter
All Theses
In contrast to standard aerial imagery, unmanned aerial systems (UAS) utilize recent technological advances to provide an affordable alternative for imagery acquisition. Increased value can be realized through clarity and detail providing higher resolution (2-5 cm) over traditional products. Many natural resource disciplines such as urban forestry will benefit from UAS. Tree inventories for risk assessment, biodiversity, planning, and design can be efficiently achieved with the UAS. Recent advances in photogrammetric processing have proved automated methods for three dimensional rendering of aerial imagery. Point clouds can be generated from images providing additional benefits. Association of spatial locational information within the …
Using Google Earth For Forest Management, Yanli Zhang, Jeremy P. Stovall
Using Google Earth For Forest Management, Yanli Zhang, Jeremy P. Stovall
Faculty Publications
No abstract provided.
Measuring Tree Height Using Pictometry Hyperspatial Imagery, Daniel Unger, David Kulhavy, Matthew A. Wade, I-Kuai Hung
Measuring Tree Height Using Pictometry Hyperspatial Imagery, Daniel Unger, David Kulhavy, Matthew A. Wade, I-Kuai Hung
Faculty Publications
Trees within Nacogdoches, Texas were measured for height using Pictometry hyperspatial imagery at 4 inch spatial resolution. Trees measured included baldcypress located on LaNana Creek as part of a hybrid analysis study. Baldcypress, Taxodiumdistichum, was planted along La Nana Creek, Nacogdoches, Texas, for erosion control and as a test bank for growth of the species genotypes. Each tree was located with GPS and entered into the GIS data base in the Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University. Actual tree height, measured using a height pole in 0.1 inch increments, was compared to …
Spatial Patterns And Physical Factors Of Smokejumper Utilization Since 2004, Tyson A. Atkinson
Spatial Patterns And Physical Factors Of Smokejumper Utilization Since 2004, Tyson A. Atkinson
Graduate Student Theses, Dissertations, & Professional Papers
This research examines patterns of aerial smokejumper usage in the United States. I assess landscape and environmental factors of their deployment using a detailed nine-year record of smokejumper activity in combination with terrain, fuels, and transportation network data. Specifically, the research seeks to identify commonalities in location (proximity), terrain, fuels, fire occurrence, and accessibility of smokejumper actions that inform current usage and identify opportunities for improved utilization. Terrain parameters (steep, rugged, inaccessible) of the western U.S. were classified and a baseline travel time grid was created (30 meter resolution). Fires in which smokejumpers responded were compared with all fires that …