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LANDFIRE 2001 Refresh Fuel Characteristic Classification System Fuelbeds (FCCS) CONUS

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: September 28, 2025 | Last Modified: 20250925
The Fuel Characteristic Classification System (FCCS) defines a fuelbed as the inherent physical characteristics of fuel that contribute to fire behavior and effects (Riccardi and others 2007). It is a set of measured or averaged physical fuel characteristics of a relatively uniform unit on the landscape that represents a distinct fire environment. A fuelbed can represent any scale or precision of interest. In FCCS, fuelbeds represent realistic fuel conditions and can accommodate a wide range of fuel characteristics in six horizontal fuel layers called strata (Ottmar and others 2007). The strata include canopy, shrub, non-woody vegetation, woody fuel, litter/lichen/moss, and ground fuel. Each stratum is further divided into 16 categories and 20 subcategories to represent the complexity of wildland and managed fuel.

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