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Homepage » Fuel » Fuel Vegetation Height

Fuel Vegetation Height

The LANDFIRE (LF) fuels vegetation products describe the elements of fuels vegetation for each LF vegetation production unit. Fuel Vegetation Height (FVH) represents a modified version of Existing Vegetation Height (EVH). LF Remap EVH is mapped as continuous estimates of canopy height for tree, shrub, and herbaceous lifeforms. To translate continuous EVH values into fuel model assignments, EVH values were binned to correspond with the bins for previous LF versions.

FVH was developed using the full suite of LF vegetation releases and the most recent ten years of disturbance data. FVH more accurately leverages fuel transition assignments related to disturbed areas to properly align with logic developed from Fuels Calibration Workshops.

A significant refinement to the LF Remap process for FVH and other fuel products was adopted to more accurately represent vegetation within disturbed areas for fuels use, allowing LF Remap to provide "capable fuels" products. What this means is that the Time Since Disturbance (TSD) assignments for disturbed areas have been calculated using an effective year. Year 2019 fuels, for example, may be calculated for the year 2019. This new process considers all the existing disturbances included in LF Remap and adjusts the TSD for these to the effective year (2019 in this example), making the products "2019 capable fuels."

By synchronizing TSDs for surface and canopy fuels, these refinements improve performance of fire behavior modeling and reduce the need for local LF users to update the vegetation and fuel conditions to represent current conditions when using the data operationally. LF Remap fuel products in areas mapped as disturbed within the past 10 years (disturbances since 2009) are delivered with this "capable fuels" functionality.

LF uses FVH in the development of the fuel products.

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Attribute Data DictionaryPDF

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?)

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