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Homepage » Fire Regime Data Products » Vegetation Departure

Vegetation Departure

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Vegetation Departure (VDEP) data product ranges from 0 - 100 to depict the amount current vegetation has departed from simulated historical vegetation reference conditions. This departure results from changes to species composition, structural stage, and canopy closure.

VDEP is calculated based on changes to species composition, structural stage, and canopy closure using methods described in the Interagency Fire Regime Condition Class Guidebook. LANDFIRE VDEP is based on departure of current vegetation conditions from reference vegetation conditions only, whereas the Guidebook approach includes departure of current fire regimes from those of the reference period. LANDFIRE simulates historical vegetation reference conditions using the vegetation and disturbance dynamics model VDDT (Vegetation Dynamics Development Tool) (LANDSUM for LF_1.0.0 only). Current vegetation conditions are derived from a classification of existing vegetation type, cover, and height.

Hydrologic Unit Codes (HUC 8, 10, 12) — The FRCC Guidebook suggests that Hydrologic Unit Code (HUC) areas may be appropriate summary units for the computation of Fire Regime Condition Class.

Another potential summary unit framework is Ecological Subsection (ECOMAP), which were used to compute FRCC in LANDFIRE 1.0.0. Ecological subsections can be downloaded using the LANDFIRE Data Access Tool in ArcMap, the LANDFIRE Data Distribution Site (DDS), or from a U.S. Forest Service website.

LF_1.0.0 (National) VCC Documentation
Attribute Data Dictionary
CSV (Why is the CSV important?)

LF_1.1.0 Metadata:

Data Distribution Site