Biophysical Settings

LANDFIRE's (LF) Biophysical Settings (BPS) represents the vegetation system that may have been dominant on the landscape prior to Euro-American settlement and is based on both the current biophysical environment and an approximation of the historical disturbance regime. LF uses BPS to depict reference conditions of vegetation across landscapes.

Map units are based on NatureServe's Ecological Systems classification and represent the natural plant communities that may have been present during the reference period. Each BPS map unit is matched with a model of vegetation succession. The actual time period for this data set is a composite of both the historical context provided by the fire regime and vegetation dynamics models and the more recent field and geospatial inputs used to create it.

LF 2014 and earlier versions: BPS is unchanged from LF National's BPS except for updates made to water, barren, and snow classes (additions or removal), so that non-vegetated cover types within the BPS product matches LF existing vegetation and fuel products.

LF 2016 Remap and the LF 2020 Update: BPS now includes the following products as attributes of BPS to ensure the linkage of these characteristics to BPS is maintained.

• Fire Return Interval (FRI)
• Percent of Low-severity Fire (PRC_SURFAC)
• Percent of Mixed-severity Fire (PRC_MIXED)
• Percent of Replacement-severity Fire (PRC_REPLAC)
• Fire Regime Groups (FRG_NEW)

LF 2020 Update: To better align with LF 2020 Fire Regime products, LF added a 90-kilometer buffer to the CONUS extent of LF 2016 Remap BPS and populated it with fill data in the buffer area. This BPS with a new 90-kilometer buffer is called LF 2020 BPS.

Product availability

Attribute Data Dictionary (LF 2.2.0)

Comma separated value (CSV) files can be found in the LF Library.

Download Data

Metadata:

• CONUS (LF 2.2.0) [HTML] [XML]
• AK (LF 1.4.0) [HTML] [XML]
• HI (LF 2.0.0) [HTML] [XML]