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LANDFIRE 2022 Forest Canopy Cover (CC) HI
LANDFIRE's (LF) 2022 Forest Canopy Cover (CC) describes the percent cover of the tree canopy in a stand. CC is a vertical projection of the tree canopy cover onto an imaginary horizontal plane. CC supplies information for fire behavior models to determine the probability of crown fire initiation, provide input in the spotting model, calculate wind reductions, and to calculate fuel moisture conditioning. To create this product, plot level CC values are calculated using the canopy fuel estimation software, Forest Vegetation Simulator (FVS). Pre-disturbance CC and Canopy Height (CH) are used as predictors of disturbed CC using a linear regression equation per Fuel Vegetation Type (FVT), disturbance type/severity, and time since disturbance. CC is used in the calculation of Canopy Bulk Density (CBD) and Canopy Base Height (CBH). In LF 2022, fuel products are created with LF 2016 Remap vegetation in areas that were un-disturbed in the last ten years. To designate disturbed areas where CC is modified, the aggregated Annual Disturbance products from 2013 to 2022 in the Fuel Disturbance (FDist) product are used. All existing disturbances between 2013-2022 are represented in the LF 2022 update, and the products are intended to be used in 2023 (the year of release). The "capable" year terminology used in LF 2020 and LF 2016 Remap is no longer specified, due to reduction in latency from when a disturbance occurs to the release date of fuel products accounting for that disturbance. However, users should still consider adjusting fuel layers for disturbances that occurred after the end of the 2022 fiscal year (after October 1st, 2022) when using the LF 2022 fuel products. Because those changes would not be accounted for. Learn more about LF 2022 at https://landfire.gov/lf_230.php .
Author(s) |
Brian L Tolk |
Publication Date | 2023-12-28 |
Beginning Date of Data | 2022 |
Ending Date of Data | 2022 |
Data Contact | |
DOI | https://doi.org/10.5066/P974JF8W |
Citation | Tolk, B.L., La, I.P., Dockter, D.J., Martin, C.M., Bourget, P.F., Beverly, S.D., Soluk, E.L., (CTR), D.L., Propios, S.C., Porter, L.J., Degaga, E.J., (CTR), T.S., and Casey, J.G., 2023, LANDFIRE 2022 Forest Canopy Cover (CC) HI: U.S. Geological Survey data release, https://doi.org/10.5066/P974JF8W. |
Metadata Contact | |
Metadata Date | 2024-04-09 |
Related Publication | There was no related primary publication associated with this data release. |
Citations of these data | No citations of these data are known at this time. |
Access | public |
License | http://www.usa.gov/publicdomain/label/1.0/ |
Harvest Date: 2024-07-18T13:40:47.875Z