Product Description
Percent Fire Severity (PFS) is three products merged into one. It is a combination product of what was previously (LF 2014 and earlier) known as Percent of Low-severity Fire (PRC_SURFAC), Percent of Mixed-severity Fire (PRC_MIXED), and Percent of Replacement-severity Fire (PRC_REPLAC). Low severity is defined as less than 25 percent average top-kill within a typical fire perimeter for a given vegetation type. Mixed severity is defined as between 25 and 75 percent average top-kill within a typical fire perimeter for a given vegetation type. Replacement severity is defined as greater than 75 percent average top-kill within a typical fire perimeter for a given vegetation type.
At the release of LF 2016 Remap Percent of Low-severity Fire, Percent of Mixed-severity Fire, and Percent of Replacement-severity Fire were included as attributes in the Biophysical Settings (BPS) product. In calendar year 2024, these 3 products were merged into a single product called Percent Fire Severity (PFS).
Percent Fire Severity Resources
LF 2016 Attribute Data Table (CSV)
LF 2023 Attribute Data Table (CSV) - AK Only
LF 2016 Attribute Data Dictionary (ADD)
LF 2023 Attribtue Data Table (ADD) - AK Only
LF 2016 Attribute Data Table (CSV)
LF 2023 Attribute Data Table (CSV) - AK Only
LF 2016 Attribute Data Dictionary (ADD)
LF 2023 Attribtue Data Table (ADD) - AK Only
LF Definitions, Quality, and Standards - provides information about contributors, metadata and data standards, data creation, and data testing. This document also provides details about our general data release process.
LF Dictionary - a “one-stop shop” general resource that provides information about products, Attribute Data Dictionaries (ADDs), data and metadata, and terms.
LF Version Comparison Table - view the version history for each individual product.
LF Naming Conventions - understanding the version number
LF Definitions, Quality, and Standards - provides information about contributors, metadata and data standards, data creation, and data testing. This document also provides details about our general data release process.
LF Dictionary - a “one-stop shop” general resource that provides information about products, Attribute Data Dictionaries (ADDs), data and metadata, and terms.
LF Version Comparison Table - view the version history for each individual product.
LF Naming Conventions - understanding the version number
The Historical Fire Frequency and Severity products listed below represent fire regimes prior to European colonization, which are the outputs of locally developed state-and-transition models. Using those historical products as the reference condition, LANDFIRE developed Vegetation Departure products that estimate current vegetation conditions.
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For the release of LF 2016 Remap, Historic Fire Regime products were nested within the Biophysical Settings (BPS) product as attributes. Then, in calendar year 2024, Fire Regime products became stand-alone products once again.
Historic Fire regime products are used:
- for landscape assessments
- in comparisons of historical to current conditions
- to identify landscape management priorities