LANDFIRE.AK_140CBD

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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: 20161031
Publication_Time: unknown
Title: LANDFIRE.AK_140CBD
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: LANDFIRE Canopy Bulk Density
Issue_Identification: LF 2014
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: <https://www.landfire.gov>
Online_Linkage: <https://landfire.cr.usgs.gov/viewer/>
Description:
Abstract:
The LANDFIRE fuel data 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), and fuel loading models (FLMs). These data may be implemented within models to predict the behavior and effects of wildland fire. These data are useful for strategic fuel treatment prioritization and tactical assessment of fire behavior and effects. DATA SUMMARY: Canopy bulk density (CBD) is defined as 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 LFRDB plot analysis. Approximately 45,000 plots were acquired throughout the US 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). Go to <http://landfire.gov/participate_refdata_sub.php> for more information regarding contributors of field plot data. (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.) In an effort 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 canopy cover (CC), stand height (CH) and membership in a pinyon-juniper EVT allowing for CBD to be modeled. (Further explanation and discussion of this GLM can be found in Reeves et al, 2009). The resultant GLM was applied spatially across a mapping zone through the use of the LANDFIRE Fuels Change Mapping Tool, or LFTFC, to provide a mapped estimate of CBD. These preliminary CBD data 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 layers 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 added by LFTFC based on region and type of vegetation. It should be noted that LANDFIRE layers 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. This is because LANDFIRE assumes that the 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. LANDFIRE 2014 (lf_1.4.0) used LANDFIRE 2012 (lf_1.3.0) data as a launching point to incorporate disturbance and its severity, both managed and natural, which occurred on the landscape after 2012. Specific examples of disturbance are: fire, vegetation management, wind, and insect and disease. Disturbance data used in the updating is the result of several efforts that include data derived in part from remotely sensed land change methods, Monitoring Trends in Burn Severity (MTBS), and the LANDFIRE events data call. Vegetation growth was modeled where disturbance occurred.
Purpose:
LANDFIRE data products are designed to facilitate national- and regional-level strategic planning and reporting of management activities. Data products are created at a 30-meter grid spatial resolution raster data set; however, the applicability of data products varies by location and specific use. Principal purposes of the data products include providing, 1) national-level, landscape-scale geospatial products to support fire and fuels management planning, and, 2) consistent fuels data to support fire planning, analysis, and budgeting to evaluate fire management alternatives. Users are advised to evaluate the data 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 - 0.4 kg m-3. (0 - 40 on the map) 0.45 = thematic class of all values > 0.4 meters AND hardwoods -9999 = NoData Spatial-specific information not available
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Continually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-179.8299135763675
East_Bounding_Coordinate:-138.75803269007818
North_Bounding_Coordinate:71.14926911648406
South_Bounding_Coordinate:50.824773478534226
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: 010
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: LANDFIRE
Theme_Keyword: USFS
Theme_Keyword: LANDFIRE 2014
Theme_Keyword: United States Forest Service
Theme_Keyword: cbd
Theme_Keyword: GIS
Theme_Keyword: Raster digital data
Theme_Keyword: LF_1.4.0
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 both the USGS EROS, Sioux Falls, SD and at the USFS, Rocky Mountain Research Station, Missoula, MT. Depending on the data set described, primary responsibility may reside with USGS EROS or with USFS. 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:
Refresh 2001 (lf_1.0.5): CBD relationships were analyzed making use of the plot data rather than imagery or grid data sets. These relationships are time independent and can be applied to the appropriate vintage data set and the updated accordingly based on new vegetation data layers (Existing Vegetation Type (lf_1.0.5), Existing Vegetation Cover (lf_1.0.5), Existing Vegetation Cover (lf_1.0.5)) or disturbances. In this instance 2001 vegetation data layers were utilized to implement the mapping process; based on the vintage of the data layers used this is a 2001 CBD (lf_1.0.5) data set.
Process_Date: 20100301
Process_Step:
Process_Description: Metadata updated
Process_Date: 20130331
Process_Step:
Process_Description:
LANDFIRE 2010 (lf_1.2.0) and Refresh 2008 (lf_1.1.0): CBD relationships were analyzed making use of plot data rather than imagery or grid data sets, these relationships are time independent and can be applied to the appropriate vintage data set and updated accordingly. In this instance LANDFIRE 2010 (lf_1.2.0) and Refresh 2008 (lf_1.1.0) vegetation data layers (Existing Vegetation Type (lf_1.2.0 / lf_1.1.0), Existing Vegetation Cover (lf_1.2.0 / lf_1.1.0), Existing Vegetation Cover (lf_1.2.0 / lf_1.1.0), and Biophysical Settings (lf_1.2.0 / lf_1.0.0) were utilized in conjunction with a disturbance data layer in an attempt 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.
Process_Date: 20130331
Process_Time: 090702
Process_Step:
Process_Description:
For a detailed definition and discussion on LANDFIRE, refer to <http://www.LANDFIRE.gov>
Process_Date: 20170131
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Position: Landfire Helpdesk
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)

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 kg 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: 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: CBD > 40
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Overview_Description:
Entity_and_Attribute_Overview:
CBD Data Range: 0 - 40 = 0 - 0.4 kg m-3 45 = thematic class of all values > 0.4 meters AND hardwoods -9999 = NoData
Entity_and_Attribute_Detail_Citation: LANDFIRE Improvements 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: ARC Grid
Format_Version_Number: ArcGIS 10.x
Format_Specification: Raster
Transfer_Size: 0.001
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <https://landfire.cr.usgs.gov/viewer>
Fees: None
Turnaround: Variable
Available_Time_Period:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100101
Ending_Date: unknown

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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