2004 UC Proceedings Abstract
 Integrating TIGER, DOQ, and Forest Inventory Field Calls Track: Forestry, Wildlife, and Fisheries Management Author(s): Joe McCollum Historically, FIA has employed photointerpreters to determine whether a given dot was one of four classes: forested land, nonforested land, census water, or noncensus water. Plot center was a subset of the dot grid. Field crews would then use the sample plot center to determine a land use class. The field classification was compared with the photointerpretation, with the assumption that the field call was correct. A proportion of the land base that was in each class was calculated for each county using conditional probability. The author has written a program to allow photointerpreters to call dots forest, nonforest, census water, or noncensus water. The dots are overlaid on TIGER files to see what the Census Bureau has actually called them. This activity will add clarification in the final results. It is recommended that TIGER files be used as truth when determining whether a given plot is in a particular county, but that the field crew's call be considered truth when determining whether a given plot is in land or water. Joe McCollum USDA Forest Service Forest Inventory and Analysis 4700 Old Kingston Pike Knoxville , TN 37919 US Phone: (865) 862-2065 E-mail: jmccollum@fs.fed.us |
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