LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
20220701
LANDFIRE 2020 Forest Canopy Bulk Density (CBD) AK 2022 Capable Fuels
LF 2020
raster digital data
Sioux Falls, SD
Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
https://www.landfire.gov
LANDFIRE's (LF) 2020 Canopy Bulk Density (CBD) describes the mass of available canopy fuel per unit canopy volume that would burn in a crown fire. A spatially explicit map of CBD supplies information used in fire behavior models to determine the spread characteristics of crown fires across the landscape. The CBD mapping process derives field referenced estimates of canopy characteristics through LF Reference Database (LFRDB) plot analysis. Utilizing the LFRDB plots, field referenced CBD values are computed for each plot with the canopy fuel estimation software FuelCalc. In FuelCalc, for tree species that have no crown biomass, an equation for a species with a similar genus is used as a substitute. Species widely considered to be resistant to fire are excluded, for example, Acer and Populus spp. are excluded from the canopy fuel profile because these species are considered relatively inflammable and therefore unavailable. In LF 2020, fuel products were created with LF 2020 vegetation in non-disturbed areas. In disturbed areas, pre-disturbance vegetation was used as a starting point to derive disturbed Canopy Cover and Canopy Height from linear regression equations, which was then used to calculate CBD.
CBD was developed using the latest Annual Disturbance products from the effective disturbance years of 2012 to 2020 to provide informed changes by disturbance type, severity, and time since disturbance (TSD). The capable fuels process calculates fuel assignments for disturbed areas using an “effective year”. This process considers all the existing disturbances included in LF 2020 and assigns fuels to the pre-disturbance vegetation based on the adjusted TSD, making the products "2022 capable fuels" intended for use in 2022 and accounting for two years of disturbance recovery. Learn more about LF 2020 at https://landfire.gov/lf_220.php
LANDFIRE 2020 Update (LF 2020) is designed to produce vegetation, disturbance, and fuels products that inform wildland fire and ecological decision systems. LF 2020 is an update to the new base map, LF 2016 Remap (LF Remap), which improved past methodologies and processes to incorporate current satellite imagery, contemporary data sources, and the latest software and hardware technologies. LF 2020 utilizes the most recent and relevant geospatial data available to offer products that reflect current conditions.
LF 2020 products are designed to facilitate national and regional level strategic fire and resource management planning and reporting of management activities. The principal purposes of the products include providing, 1) national level, landscape scale geospatial products to support fire and fuels management planning, and 2) consistent fuels products to support fire planning, analysis, and budgeting to evaluate fire management alternatives.
Products are created at a 30 meter raster; however, the applicability of products varies by location and specific use. LF products were designed to support 1) national (all states) strategic planning, 2) regional (single large states or groups of smaller states), and 3) strategic/tactical planning for large sub regional landscapes and Fire Management Units (FMUs) (such as significant portions of states or multiple federal administrative entities). The applicability of LF products to support fire and land management planning on smaller areas will vary by product, location, and specific use. Managers and planners must evaluate LF products according to the scale and requirements specific to their needs.
This product has 2022 capable fuels functionality. Units are (kg/m^3 )*100 . To retrieve the real data value, user must divide the raster values in this data set by 100. The conversion from (kg/m^3 ) to (lb/ft^3 ) is 0.061728 (multiply (kg/m^3 ) by 0.061728). CBD Data Range: 0 - 0.45 (kg/m^3 ) (0 - 45 on the map) 0.45 = thematic class of all values greater than or equal to 0.45 meters. Beginning in the LF 2020 update all CONUS products are created with a 90km buffer into both Canada and Mexico, and LF 2020 AK products feature a 90km buffer into Canada. For LF 2020 fuels products the 90km buffer is based on NALCMS and aspect look up.
2020
ground condition
Annually
-179.3173
175.4184
71.5478
48.8767
ISO 19115 Topic Category
imageryBaseMapsEarthCover
biota
USGS Thesaurus
fires
hazard preparedness
remote sensing
image collections
geospatial datasets
geographic information systems
None
raster digital data
Canopy Bulk Density
CBD
U.S. Geological Survey (USGS)
U.S. Forest Service (USFS)
LANDFIRE 2020
LF 2020
Common geographic areas
US
AK
United States
Alaska
OCONUS
None
None
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Customer Service Representative
physical
47914 252nd Street
Sioux Falls
SD
57198
U.S.
605-594-6151
helpdesk@landfire.gov
These products were created by the LF team at USGS EROS, Sioux Falls, SD. Refer to the contact information throughout this metadata to contact the LF team.
None in place
Unclassified
If there is ever doubt, contact the LF Help Desk at helpdesk@landfire.gov
Microsoft Windows 10; ESRI ArcCatalog 10.7.1
Products were tested to ensure that each attribute is represented consistently across all data sets. Attributes were not validated against in person observations.
The products were pixel "truth" tested for consistency of land or water characteristics across all products.
Products were formally tested to ensure that valid data was produced for all pixels. Each product was then validated and tested for duplicates, omissions, and errors.
Beginning with the new base map of LF 2016 Remap (LF Remap), products were created using recent advances in image compositing, tiling algorithms, and faster computing hardware to ensure that LF products remained relevant. LF Remap leveraged the Landsat archive, lidar data, and user contributed field plot data compiled into the LF Reference Database (LFRDB), to create new vegetation products. Reference resources included, but were not limited to, Forest Inventory and Analysis (FIA) program plot data (USFS https://fia.fs.fed.us/), Landsat Dynamic Surface Water Extent [(DSWE) USGS https://www.usgs.gov/landsat-missions], the National Land Cover Database [(NLCD) USGS https://www.mrlc.gov/data], and National Agricultural Statistics Service [(NASS) USDA - https://www.nass.usda.gov/].
For LF 2020 reference resources included, but were not limited to, NASS agricultural class layers, NLCD developed and roads classes, TIGER road polylines [https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_apps.html], 3D Elevation Program Digital Elevation Model [(3DEP DEM) USGS https://www.usgs.gov/3d-elevation-program], Monitoring Trends in Burn Severity [(MTBS) USGS https://mtbs.gov/], Burned Area Reflectance Classification [(BARC) USFS and USGS] and Rapid Assessment of Vegetation Condition after Wildfire [(RAVG) https://burnseverity.cr.usgs.gov/ravg/] and North American Land Change Monitoring System [(NALCMS) https://www.mrlc.gov/data/north-american-land-change-monitoring-system] for the 90km buffer area.
To read more about LF reference resources go to https://www.landfire.gov/reference.php. Information about LF 2020 product testing is available by request or via the website at https://www.landfire.gov.
20220701
Raster
Grid Cell
20729
24853
Albers Conical Equal Area
55.0
65.0
-154.0
50.0
0.0
0.0
row and column
30.0
30.0
meters
North_American_Datum_1983
GRS 1980
6378137.0
298.2572221010042
CBD
LF 2020 CBD attributes spreadsheet.
LF 2020
VALUE
Forest Canopy Bulk Density (CBD) is the mass of available canopy fuel per unit canopy volume that would burn in a crown fire and values range from 0 to 45.
LF 2020
-9999
No Data
LF 2020
0
45
KGM3_X_100CBD is kilograms per meter cubed multiplied by 100.LF 2020
NoData
No Data
LF 2020
Non-Forested
Non-forested
LF 2020
CBD = 01 kg/m^3 X 100
CBD = 01 kg/m^3 X 100
LF 2020
CBD = 02 kg/m^3 X 100
CBD = 02 kg/m^3 X 100
LF 2020
CBD = 03 kg/m^3 X 100
CBD = 03 kg/m^3 X 100
LF 2020
CBD = 04 kg/m^3 X 100
CBD = 04 kg/m^3 X 100
LF 2020
CBD = 05 kg/m^3 X 100
CBD = 05 kg/m^3 X 100
LF 2020
CBD = 06 kg/m^3 X 100
CBD = 06 kg/m^3 X 100
LF 2020
CBD = 07 kg/m^3 X 100
CBD = 07 kg/m^3 X 100
LF 2020
CBD = 08 kg/m^3 X 100
CBD = 08 kg/m^3 X 100
LF 2020
CBD = 09 kg/m^3 X 100
CBD = 09 kg/m^3 X 100
LF 2020
CBD = 10 kg/m^3 X 100
CBD = 10 kg/m^3 X 100
LF 2020
CBD = 11 kg/m^3 X 100
CBD = 11 kg/m^3 X 100
LF 2020
CBD = 12 kg/m^3 X 100
CBD = 12 kg/m^3 X 100
LF 2020
CBD = 13 kg/m^3 X 100
CBD = 13 kg/m^3 X 100
LF 2020
CBD = 14 kg/m^3 X 100
CBD = 14 kg/m^3 X 100
LF 2020
CBD = 15 kg/m^3 X 100
CBD = 15 kg/m^3 X 100
LF 2020
CBD = 16 kg/m^3 X 100
CBD = 16 kg/m^3 X 100
LF 2020
CBD = 17 kg/m^3 X 100
CBD = 17 kg/m^3 X 100
LF 2020
CBD = 18 kg/m^3 X 100
CBD = 18 kg/m^3 X 100
LF 2020
CBD = 19 kg/m^3 X 100
CBD = 19 kg/m^3 X 100
LF 2020
CBD = 20 kg/m^3 X 100
CBD = 20 kg/m^3 X 100
LF 2020
CBD = 21 kg/m^3 X 100
CBD = 21 kg/m^3 X 100
LF 2020
CBD = 22 kg/m^3 X 100
CBD = 22 kg/m^3 X 100
LF 2020
CBD = 23 kg/m^3 X 100
CBD = 23 kg/m^3 X 100
LF 2020
CBD = 24 kg/m^3 X 100
CBD = 24 kg/m^3 X 100
LF 2020
CBD = 25 kg/m^3 X 100
CBD = 25 kg/m^3 X 100
LF 2020
CBD = 26 kg/m^3 X 100
CBD = 26 kg/m^3 X 100
LF 2020
CBD = 27 kg/m^3 X 100
CBD = 27 kg/m^3 X 100
LF 2020
CBD = 28 kg/m^3 X 100
CBD = 28 kg/m^3 X 100
LF 2020
CBD = 29 kg/m^3 X 100
CBD = 29 kg/m^3 X 100
LF 2020
CBD = 30 kg/m^3 X 100
CBD = 30 kg/m^3 X 100
LF 2020
CBD = 31 kg/m^3 X 100
CBD = 31 kg/m^3 X 100
LF 2020
CBD = 32 kg/m^3 X 100
CBD = 32 kg/m^3 X 100
LF 2020
CBD = 33 kg/m^3 X 100
CBD = 33 kg/m^3 X 100
LF 2020
CBD = 34 kg/m^3 X 100
CBD = 34 kg/m^3 X 100
LF 2020
CBD = 35 kg/m^3 X 100
CBD = 35 kg/m^3 X 100
LF 2020
CBD = 36 kg/m^3 X 100
CBD = 36 kg/m^3 X 100
LF 2020
CBD = 37 kg/m^3 X 100
CBD = 37 kg/m^3 X 100
LF 2020
CBD = 38 kg/m^3 X 100
CBD = 38 kg/m^3 X 100
LF 2020
CBD = 39 kg/m^3 X 100
CBD = 39 kg/m^3 X 100
LF 2020
CBD = 40 kg/m^3 X 100
CBD = 40 kg/m^3 X 100
LF 2020
CBD = 41 kg/m^3 X 100
CBD = 41 kg/m^3 X 100
LF 2020
CBD = 42 kg/m^3 X 100
CBD = 42 kg/m^3 X 100
LF 2020
CBD = 43 kg/m^3 X 100
CBD = 43 kg/m^3 X 100
LF 2020
CBD = 44 kg/m^3 X 100
CBD = 44 kg/m^3 X 100
LF 2020
CBD greater than or equal to 45 kg/m^3 X 100
CBD greater than or equal to 45 kg/m^3 X 100
LF 2020
KGM3
Kilograms per meter cubed.
LF 2020
Kilograms per meter cubed.
R
Red color value/255
LF 2020
0
255
G
Green color value/255
LF 2020
0
255
B
Blue color value/255
LF 2020
0
255
RED
Red color value.
LF 2020
0.0
1.0
GREEN
Green color value.
LF 2020
0.0
1.0
BLUE
Blue color value.
LF 2020
0.0
1.0
LANDFIRE (LF) 2020 Forest Canopy Bulk Density (CBD) AK. An Attribute Table is included with each product download as a .csv and embedded in the metadata. The Attribute Data Dictionary (ADD) can be found at https://www.landfire.gov/.
https://www.landfire.gov/cbd.php
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Customer Service Representative
physical
47914 252nd Street
Sioux Falls
SD
57198
U.S.
605-594-6151
helpdesk@landfire.gov
This product is reproduced from geospatial information prepared by the U.S. Department of the Interior (DOI) USGS EROS. By removing the contents of this package or taking receipt of these files via electronic file transfer methods, you understand that the data stored on this media can be updated at any time. Represented features may not be in an accurate geographic location. USGS EROS makes no expressed or implied warranty, including warranty of merchantability and fitness, with respect to the character, function, or capabilities of the data or their appropriateness for any user's purposes. USGS EROS reserves the right to correct, update, modify, or replace this geospatial information without notification.
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
ARCG
20220701
LF 2020
https://www.landfire.gov
none
20220701
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Customer Service Representative
physical
47914 252nd Street
Sioux Falls
SD
57198
U.S.
605-594-6151
helpdesk@landfire.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None
Unclassified
None