LANDFIRE.US_200CBD

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Wildland Fire Science, Earth Resources Observation and Science Center, U.S. Geological Survey
Publication_Date: 20190207
Publication_Time: unknown
Title: LANDFIRE.US_200CBD
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: LANDFIRE Canopy Bulk Density
Issue_Identification: LANDFIRE 2016
Publication_Information:
Publication_Place: 47914 252nd St., Sioux Falls, SD, 57198-0001
Publisher:
Wildland Fire Science, Earth Resources Observation and Science Center, U.S. Geological Survey
Online_Linkage: <http://www.landfire.gov>
Online_Linkage: <http://landfire.cr.usgs.gov/viewer/>
Description:
Abstract:
The LANDFIRE (LF) fuel products describe the composition and characteristics of both surface fuel and canopy fuel. Specific products include fire behavior fuel models, Canopy Bulk Density (CBD), Canopy Base Height (CBH), Canopy Cover (CC) Canopy Height (CH), Fuel Vegetation Type, Cover, and Height (FVT, FVC, FVH). These products may be implemented within models to predict the behavior and effects of wildland fire and are useful for strategic fuel treatment prioritization and tactical assessment of fire behavior and effects. Summary: CBD describes the mass of available canopy fuel per unit canopy volume that would burn in a crown fire (Van Wagner 1977; Scott and Reinhardt 2001; Keane et al. 2005). A spatially explicit map of canopy bulk density supplies information used in fire behavior models such as FARSITE (Finney 1998) to determine the spread characteristics of crown fires across the landscape. The CBD mapping process began by deriving field referenced estimates of canopy characteristics through LF Reference Database (LFRDB) plot analysis. Approximately 45,000 plots were acquired throughout the U.S. for estimating CBD. Utilizing these plots, field referenced CBD values were computed for each plot using the canopy fuel estimation software FuelCalc (Reinhardt et al. 2006b). Some tree species had no crown biomass equation. In this situation, a published equation for a species with a similar genus was used as a substitute. Not all species were used for computing plot-level CBD. For example, all Acer and Populus spp. were excluded from the canopy fuel profile as these and other broadleaved species are considered relatively inflammable and therefore unavailable. To model the relationship between these stand and canopy characteristics, the outputs from the FuelCalc computations were analyzed using a gamma log-link generalized linear model (GLM) (McCullagh and Nelder 1983). From this analysis plot level, CBD estimates related to CC, CH, and membership in a pinyon-juniper Existing Vegetation Type allowed for CBD to be modeled. (Further explanation and discussion of this GLM can be found in Reeves et al, 2009). CBD products were finalized after applying a series of post-processing techniques and logic checks ensuring that the canopy fuel products were relevant in the context of the other fuel products and fire behavior predictions. All non-forest values, including herbaceous and most shrub systems and non-burnable types such as urban, barren, snow and ice, and agriculture were coded as 0. Some stands dominated by broadleaf species which typically do not permit initiation of crown fire (e.g. Populus spp.) are coded with a CBD of 0.01 kg m-3. Since crown fire is rarely observed in most hardwood stands, the lowest CBD value possible was used to prevent false simulation of crown fire in these areas. Certain types of agriculture that are deemed burnable get a value based on region and type of vegetation. It should be noted that LF products will not include canopy characteristics in fuel types where the tree canopy is considered a part of the surface fuel and the surface fire behavior fuel model is chosen to reflect these conditions. It is assumed potential burnable biomass in the shorter tree canopies has been accounted for in the surface fuel model parameters. For example, maps of areas dominated by young or short conifer stands where the trees are represented by a shrub type fuel model will not include canopy characteristics. LF Remap (LF 2.0.0) used LF Remap Existing Vegetation Type, Cover, and Height and10-years disturbance information to create FVT, FVC, and FVH for disturbed areas to represent pre-disturbance scenarios (dating back to 2009). The combination of pre-disturbance and non-disturbance vegetation are used to assign surface fuel models by informing vegetation type, cover and height acted on by a disturbance. Vegetation adjustments were modeled in disturbance areasbased on disturbance type/severity using Forest Vegetation Simulator derived linear equations. Specific examples of disturbance are: fire, vegetation management, wind, and insect and disease. For more information about LF Disturbance products refer to Annual Disturbance. CBD is 2019 capable, meaning the Time Since Disturbances are updated to the effective year 2019 based on the year the disturbance occurred, making the product ready for use in year 2019. Disturbances that are older than 10 years in 2019 follow the existing LF protocol and are removed from FDist and treated as non-disturbed. Disturbances on the landscape have been identified through 2016 using the best available information (see Annual Disturbance). All non-disturbed fuel continues to be based on the LF Remap fuel vegetation.
Purpose:
LF products are designed to facilitate national- and regional-level strategic planning and reporting of management activities. Products are created at a 30-meter spatial resolution raster data set; however, the applicability of products varies by location and specific use. 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 to support fire planning, analysis, and budgeting to evaluate fire management alternatives. Users are advised to evaluate the products carefully for their applications.
Supplemental_Information:
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 > 0.45 meters -9999 = No Data Spatial-specific information not available
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Continually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-127.98775263969655
East_Bounding_Coordinate:-65.25444546636928
North_Bounding_Coordinate:51.64968101623376
South_Bounding_Coordinate:22.765446426860603
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: LANDFIRE
Theme_Keyword: USFS
Theme_Keyword: LANDFIRE 2016
Theme_Keyword: United States Forest Service
Theme_Keyword: cbd
Theme_Keyword: GIS
Theme_Keyword: Raster digital data
Theme_Keyword: USGS
Theme_Keyword: Canopy Bulk Density
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard 10-4,): Washington, D.C., National Institute of Standards and Technology
Place_Keyword: U.S.
Place_Keyword: United States
Place_Keyword: US
Access_Constraints: None
Use_Constraints:
Although LANDFIRE products are delivered as 30-meter pixels, they should not be used at the individual pixel level or on small groups of pixels. LANDFIRE 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 LANDFIRE products to support fire and land management planning on smaller areas will vary by product, location, and specific use. Further investigation by local and regional experts should be conducted to inform decisions regarding local applicability. However, it is the responsibility of the local user, using LANDFIRE metadata and local knowledge, to determine if and/or how LANDFIRE can be used for particular areas of interest. LANDFIRE products are not intended to replace local products, but rather serve as a back-up by providing wall-to-wall cross-boundary products. It is the responsibility of the user to be familiar with the value, assumptions, and limitations of LANDFIRE products. Managers and planners must evaluate LANDFIRE data according to the scale and requirements specific to their needs.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Wildland Fire Science, Earth Resources Observation and Science Center, U.S. Geological Survey
Contact_Address:
Address_Type: physical
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198-0001
Country: US
Contact_Voice_Telephone: 605/594-6151
Contact_Electronic_Mail_Address: helpdesk@landfire.gov
Data_Set_Credit:
Data have been collected and analyzed by teams at the USGS EROS, Sioux Falls, SD. Depending on the data set described primary responsibility may reside with USGS EROS. Contact information will be listed in the Contact Section and in the Metadata Reference section with regards to the primary responsibility.
Security_Information:
Security_Classification_System: None in place
Security_Classification: Unclassified
Security_Handling_Description:
If there is ever doubt, contact the appropriate resource staff who has stewardship responsibility and the GIS Coordinator.
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722
Cross_Reference:
Citation_Information:
Originator: 1) Finney, M.A
Publication_Date: 19980101
Title: FARSITE: Fire area simulator-model development and evaluation.
Geospatial_Data_Presentation_Form: multimedia presentation
Other_Citation_Details: U.S. Department of Agriculture, RMRS-RP-4, p. 51
Cross_Reference:
Citation_Information:
Originator: Research, R.
Publication_Date: 20060101
Title: Data mining tools.
Geospatial_Data_Presentation_Form: tools
Other_Citation_Details: verified 22 March, 2006
Online_Linkage: <http://www.rulequest.com>
Cross_Reference:
Citation_Information:
Originator: 2) Quinlan, J.R.
Publication_Date: 19930101
Title: Combining instance-based and mode-based learning.
Geospatial_Data_Presentation_Form: diagram
Other_Citation_Details: 10th International conference on machine learning: 236-243
Cross_Reference:
Citation_Information:
Originator: Scott, J., and Reinhardt, E.D.
Publication_Date: 20010101
Title:
Assessing crown fire potential by linking models of surface and crown fire behavior.
Geospatial_Data_Presentation_Form: model
Other_Citation_Details: RP RMRS-RP-29. Rocky Mountain Research Station, Missoula, MT

Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
LF 2016: CBD relationships were analyzed making use of plot data, these relationships are time independent and can be applied to the appropriate vintage data set and updated accordingly. In this instance, LF 2016 Existing Vegetation Type, Cover, and Height (EVT, EVC, EVH ) and Biophysical Settings (BPS) layers were utilized in conjunction with Fuels Vegetation Type, Cover, and Height (FVT, FVC, FVH) and a disturbance data layer to derive the most up to date assignments. To derive post-disturbance CBD values the Forest Service's Forest Vegetation Simulator (FVS) software was implemented to model a variety of disturbances at high, moderate and low severities adjusting canopy cover/height and subsequently CBD.
Process_Date: 20130331
Process_Time: 090702

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: cbd
Entity_Type_Definition: Canopy Bulk Density
Entity_Type_Definition_Source: Landfire
Attribute:
Attribute_Label: ObjectID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Value
Attribute_Definition: Canopy bulk density units are (kg/m^3 )*100
Attribute_Definition_Source: Landfire
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: Non-Forested
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1 -40
Enumerated_Domain_Value_Definition: CBD_kgm3_x_100
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 45
Enumerated_Domain_Value_Definition: CBD > 40
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Attribute:
Attribute_Label: Count
Attribute_Definition: Number of pixels
Attribute_Definition_Source: Landfire
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Cbd_kgm3_x_100
Attribute_Definition: Canopy bulk density kilograms meters3 * 100
Attribute_Definition_Source: Landfire
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: Non-Forested
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1 - 40
Enumerated_Domain_Value_Definition: CBD_kgm3_x_100
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 45
Enumerated_Domain_Value_Definition: thematic class of all values > 0.45 meters
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Overview_Description:
Entity_and_Attribute_Overview:
CBD Data Range: 0 - 0.45 (kg/m^3 ) (0 - 45 on the map) 0.45 = thematic class of all values > 0.45 meters -9999 = No Data
Entity_and_Attribute_Detail_Citation: LF Canopy Bulk Density

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Position:
Wildland Fire Science, Earth Resources Observation and Science Center, U.S. Geological Survey
Contact_Address:
Address_Type: physical
Address: Earth Resources Observation and Science Center
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198
Country: US
Contact_Voice_Telephone: 605-594-6151
Contact_Electronic_Mail_Address: helpdesk@landfire.gov
Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
Contact_Instructions:
The USGS point of contact is for questions relating only to the data display and download from this web site. For questions regarding data content and quality, refer to the original processor.
Distribution_Liability:
Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made by the USGS regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty. Data may have been compiled from various outside sources. Spatial information may not meet National Map Accuracy Standards. This information may be updated without notification. The USGS shall not be liable for any activity involving these data, installation, fitness of the data for a particular purpose, its use, or analyses results.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCG
Format_Specification: Raster

Metadata_Reference_Information:
Metadata_Date: 20100101
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
Contact_Position: Customer Service Representative
Contact_Address:
Address_Type: mailing and physical
Address: USGS EROS
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198-0001
Country: US
Contact_Voice_Telephone: 605/594-6151
Contact_Facsimile_Telephone: 605/594-6589
Contact_Electronic_Mail_Address: helpdesk@landfire.gov
Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: None

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