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The Forest Canopy Bulk Density (CBD) layer describes the density of available canopy fuel in a stand. It is defined as the mass of available canopy fuel per canopy volume unit. These data are provided for forested areas only. CBD unit measurements are kg m-3 * 100.
CBD is generated using a predictive modeling approach that relates Landsat imagery and spatially explicit biophysical gradients to calculated values of CBD from field training sites.
CBD supplies information for fire behavior models, such as FARSITE, to determine the initiation and spread characteristics of crown fires across landscapes.