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The vegetation and landcover of Valley Forge National Historical Park (VAFO) were mapped to the association level of the National Vegetation Classification System developed by The Nature Conservancy and network of Natural Heritage Programs. The mapping process was based on the USGS-NPS Vegetation Mapping Program with some modifications due to the size of the mapped polygons. A total of 308 plots were used to assess the thematic accuracy of the database.The estimated overall thematic accuracy of the database is 81.20 percent. At a 90 percent confidence interval, the estimated minimum overall thematic accuracy is 77.40 percent and the estimated maximum is 85.00 percent. Based on hypothesis testing, the final association...
    map background search result map search result map Valley Forge National Historical Park Vegetation Mapping Project - Spatial Vegetation Data Valley Forge National Historical Park Vegetation Mapping Project - Spatial Vegetation Data