Portland State University. Department of Geography
Date of Award
Master of Science (M.S.) in Geography
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 (
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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.