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Structure Exposure Score
Structure Exposure Score is an integrated rating of wildfire hazard that includes the likelihood of a wildfire reaching a given location along with the potential intensity and... -
Standing Dead and Ladder Fuels
This is the material that may burn at the extreme end of the spectrum and contribute to mass fire behavior (Stephens et al., 2022), especially during crown spread type events.... -
Southern CA - Large Tree Density > 30" Dbh
Large trees are important to forest managers as they have a greater likelihood of survival from fire, provide sources of seed stock, wildlife habitat, and contribute to other... -
Southern CA Cost of Potential Treatments
The principle method for maintaining or restoring resilience to the southern California landscape involves vegetation treatments. There are many variations on treatments... -
Source of Ember Load to Buildings
The ember transport model used in WildEST tracks the travel of embers from each source pixel to downwind receiving pixels. The relative number of embers landing on a given... -
Sierra Nevada Sawtimber Volume
This metric expresses the amount of total existing, aboveground, live tree stem biomass measured in dry weight tons per acre for the Sierra Nevada region. This metric can be... -
Sierra Nevada - Large Tree Density - > 30" Dbh
Large trees are important to forest managers for multiple reasons: they have a greater likelihood of survival from fire; they are an important source of seed stock; they provide... -
Sierra Nevada - Large Tree Density - 24" - 30" Dbh
Large trees are important to forest managers for multiple reasons: they have a greater likelihood of survival from fire; they are an important source of seed stock; they provide... -
Sierra Nevada Cost of Potential Treatments - Skidder - Sawlog
This metric represents cost of potential treatments for the Sierra Nevada region and is dependent on predefined treatments or silvicultural prescriptions, which are best... -
Sierra Nevada Cost of Potential Treatments - Skidder - Biomass
This metric represents cost of potential treatments for the Sierra Nevada region and is dependent on predefined treatments or silvicultural prescriptions, which are best... -
Sierra Nevada Biomass Volume
This metric expresses the total amount of existing biomass volume (measured in dry weight tons per acre) from all live tree crowns (branchwood and foliage) and the tree stems... -
Shrub Resiliency; Number of Disturbance Events Per 15 Year Intervals Since 1975
Count of short return interval fires (within 15 years) across southern CA (1950-2019) that can be used to identify sites that have experienced frequent fire (e.g. more than one... -
Shrublands With Low Natural Regeneration Potential Post-Fire
Identifying locations where shrubland vegetation will not recover naturally post-fire is a challenge given the vast areas that are regularly burned in southern California. When... -
Shrub Cover Ratio
Total shrub cover as measured by the fractional non-overlapping absolute shrub cover, viewed vertically. Provides a first order measure of vegetation type when combined with... -
Seral Stage Distribution
The seral stages are categories that represent the developmental progression of forest ecosystems from initial establishment or following a stand replacing event (e.g., high... -
SDI: Stand Density Index - Zeide 1983
Stand density index (SDI) helps vegetation managers to identify levels of site utilization and competition to determine management scenarios to meet objectives and is often used... -
SDI: Stand Density Index - Reineke 1933
Stand density index (SDI) helps vegetation managers to identify levels of site utilization and competition to determine management scenarios to meet objectives and is often used... -
SDI: Proportion of Max - Zeide 1983
Stand density index (SDI) helps vegetation managers to identify levels of site utilization and competition to determine management scenarios to meet objectives and is often used... -
SDI: Proportion of Max - Reineke 1933
Stand density index (SDI) helps vegetation managers to identify levels of site utilization and competition to determine management scenarios to meet objectives and is often used... -
Risk of Tree Dieoff During Drought
A quantitative continuous variable that reflects the risk of tree dieoff during a significant drought period (SPI48 drought = -2).
