Portland State University. Department of Geography
Date of Award
Master of Science (M.S.) in Geography
1 online resource (41 p.)
Geographic information systems, Forest products, Forest products industry, Commerce
The cost of transporting forest products from harvest site to processing facility is a critical indicator of timber project feasibility. In order to accurately assess these timber haul costs, least-cost travel-time estimates among the site and the facility can be estimated using vector- or raster-based GIS methods. This study explores the applicability of both the raster- and vector-techniques within a variety of landscapes, including forested areas where comprehensive transportation data is limited. A comparison between the travel-time estimates derived from both methods was performed on three study sites using real-world data. The comparison also tested the effect of resolution on the reliability of raster-based calculations. The results indicate that travel-time estimates derived from a small resolution raster grid (
Loreno, Sara M., "The Cost of Hauling Timber: A Comparison of Raster- and Vector- Based Travel-Time Estimates in GIS" (2014). Geography Masters Research Papers. 7.