Description: Background:Existing vegetation mapping provides basic information on the current condition of vegetation structure and composition. Beginning in 2004 the Southwestern Region developed Mid-Scale Existing Vegetation Mapping on all National Forests and Grasslands (Mellin et al. 2008). The Southwestern Region is now working with OSU’s Institute of Natural Resources to develop new mid-scale mapping with the INREV project. Mid-scale mapping is compliant with agency technical guidance for existing vegetation (Brohman and Bryant 2005, Nelson et al. 2015). For business needs of natural resource organizations, existing vegetation mapping represents an important component in an overall inventory, monitoring, and analysis framework.Application:Existing vegetation mapping is often used in combination with ecosystem type mapping such asEcological Response Units (Wahlberg et al. 2020) for purposes of landscape assessment and habitat modeling. Existing vegetation mapping can also be combined with ecological mapping such as TEUI (Winthers et al. 2006) for assessment involving Ecological Site Descriptions (Creque et al. 1999, SRM 1995). The INREV dataset is best applied and most appropriately summarized at the HUC12 subwatershed level (10,000 – 40,000 acres) or larger areal extents.
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