Download (PDF 2.66 MB): https://research.fs.usda.gov/download/treesearch/17330.pdf
Abstract
Many forest inventory and analysis (FIA) analysts, other researchers, and FIA Spatial Data Services personnel have expressed their desire to use the FIA Phase 2 (P2) and Phase 3 (P3), and Forest Health Monitoring (FHM) grids in presentations and other analytical reports. Such uses have been prohibited due to the necessity of keeping the actual P2, P3, and FHM grids confidential. The Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP) grid is often touted as a secure alternative to the FHM grid for legacy FHM plots, but the current FIA P3 sampling frame differs from its FHM predecessor. This article offers an approach involving a weighted bipartite matching algorithm using an alternative to fuzzing and swapping coordinates for FIA P2 and P3 plots to assign plots to EMAP grid points by county and shows preliminary results that keep the actual P2, P3, and FHM grids confidential.
Parent Publication
Citation
McCollum, Joseph; Cochran, Jamie K. 2009. Phase 2 and phase 3 presentation grids. In: McRoberts, Ronald E.; Reams, Gregory A.; Van Deusen, Paul C.; McWilliams, William H., eds. Proceedings of the eighth annual forest inventory and analysis symposium; 2006 October 16-19; Monterey, CA. Gen. Tech. Report WO-79. Washington, DC: U.S. Department of Agriculture, Forest Service. 367-373.
