LANDFIRE (LF) disturbance products are developed to provide temporal and spatial information related to landscape change. Fuel Disturbance (FDist) uses the latest 10 years of Annual Disturbance products representing disturbance year and original disturbance code. FDist was a refinement of Vegetation Disturbance (VDist) in LF 1.x products and is a refinement of Historical Disturbance (HDist) in LF Remap to more accurately represent disturbance scenarios within the fuels environment. FDist development involves a comprehensive review of disturbance attributes.
For LF Remap, a significant refinement process was adopted to more accurately represent vegetation within disturbed areas for fuels use, allowing LF Remap to provide "capable fuels" products. By calculating Time Since Disturbance (TSD) for disturbed areas using an effective year, (2019 or 2020 for example), LF Remap fuels products in disturbed areas can be made 2019 or 2020 capable. This new process considers all the existing disturbances included in LF Remap and adjusts the TSD for these to the effective year (2019 or 2020 in this example.)
LF Remap FDist is delivered with this "capable fuels" functionality.
Disturbances older than 10 years follow the existing LF protocol for removal from FDist and are represented by more recent non-disturbed LF 2016 Remap vegetation. All non-disturbed fuel is based on LF Remap, which is the newest fuel vegetation available.
LF uses FDist in the development of Fuels products.
The comma separated value (CSV) file used for the raster attribute table is included in the LF product download in database file (DBF) format.
(Why is the CSV important?)