LANDFIRE.HI_140CBH

Metadata also available as

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.HI_140CBH
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: LANDFIRE Canopy Base Height
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
Other_Citation_Details: United States Forest Service
Online_Linkage: <http://www.landfire.gov>
Online_Linkage: <http://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: A spatially explicit map of canopy base height supplies information used in fire behavior models such as FARSITE (Finney 1998) to determine the point at which a surface fire will transition to a crown fire. This critical canopy base height (CBH) describes the lowest point in a stand where there is sufficient available fuel (0.25 in dia.) to propagate fire vertically through the canopy. Specifically, CBH is defined as the lowest point at which the canopy bulk density is .012 kg m-3. 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. The CBH mapping process began by deriving field referenced estimates of canopy characteristics through LFRDB plot analysis. Approximately 70,000 plots were acquired throughout the U.S. for estimating CBH. Go to <http://landfire.gov/participate_refdata_sub.php> for more information regarding contributors of field plot data. Utilizing these plots, field referenced CBH values were calculated for each plot using the canopy fuel estimation software in Forest Vegetation Simulator (<https://www.fs.fed.us/fvs/>). This process of deriving field referenced estimates for CBH was employed to create a training data set to model CBH values. Statistical analysis of plot variables indicated that Existing Vegetation Type (EVT) and Existing Vegetation Height (EVH) demonstrated some influence on CBH, with Existing Vegetation Cover (EVC) affecting CBH values within certain EVTs. To model these relationships, a regression tree analysis (RTA) approach was implemented in R for each EVT. (Similar to previous LANDFIRE versions, Juniper EVTs consistently showed similar CBH assignments and were given a value of 3.0m x 10). It was determined that there was not enough plot data to account for all EVC, EVH, and EVT combinations during the CBH RTA development. A filling approach was implemented to account for data gaps. The basic premise of this approach was to map assignments with the most detailed data available and fill in gaps with coarser aggregates to account for all combinations. Aggregate values for EVTs were derived at two coarser levels, existing vegetation groups (EVG) and existing vegetation systems (EVS). Each vegetation group was more generalized than the previous grouping. The resultant maps were analyzed, peer reviewed and tested to assess performance against previous LANDFIRE versions. For each vegetation grouping (or subset) a data threshold greater than or equal to thirty plots per EVT/EVG/EVS had to be reached before the RTA was implemented. All outliers greater than or equal to two standard deviations from the mean were removed prior to computing a CBH RTA value. The CBH data represented in the resultant layer are continuous from 0 to 9.9 meters (to the nearest 0.1 meter). Some stands dominated by broadleaf species which typically do not permit initiation of crown fire (e.g. Populus spp.) are coded with a CBH of 10 meters. Since crown fire is rarely observed in most hardwood stands, the highest CBH value possible was used to prevent false simulation of crown fire in these areas. Similarly, all non-forest values, including herbaceous, and shrub systems and non-burnable types such as urban, barren, snow and ice and agriculture, were coded as 0. Finally, certain types of agriculture and urban vegetation that are deemed burnable were assigned a constant value by LFTFC rule-sets based on region and vegetation type. 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, weather, 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 m * 10. To retrieve the real data value, user must divide the raster values in this data set by 10. The conversion from m to ft is 3.28 (multiply m by 3.28). CBH data range: 0 - 10 meters (0 - 100 raster values m*10). 100 = thematic class of all values >= 10 meters and some stands dominated by broadleaf species. -9999 = NoData
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Continually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -160.47454578543605
East_Bounding_Coordinate: -153.3681839910366
North_Bounding_Coordinate: 25.17246703156623
South_Bounding_Coordinate: 18.112857617393107
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: LF_1.4.0
Theme_Keyword: Canopy Base Height
Theme_Keyword: USFS
Theme_Keyword: LANDFIRE 2014
Theme_Keyword: LANDFIRE
Theme_Keyword: cbh
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: GIS
Theme_Keyword: Raster digital data
Theme_Keyword: USGS
Theme_Keyword: United States Forest Service
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: 010
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: United States
Place_Keyword: US
Place_Keyword: U.S.
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 1999-present
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_Position: Customer Service Representative
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: Rulequest Research
Publication_Date: 20060101
Title: Data mining 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.
Other_Citation_Details:
10th International conference on machine learning. Amherst MD:236 - 243
Cross_Reference:
Citation_Information:
Originator: 1) Finney, M.A.
Publication_Date: 19980101
Title: FARSITE: Fire area simulator-model development and evaluation
Other_Citation_Details: U.S. Department of Agriculture, RMRS-RP-4, p. 51

Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
For a detailed definition and discussion on LANDFIRE, refer to <http://www.LANDFIRE.gov>
Process_Date: unknown
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_Electronic_Mail_Address: helpdesk@landfire.gov
Hours_of_Service: 0800 - 1600, CT M-F (-6h CST/-5h CDT GMT)
Process_Step:
Process_Description:
Refresh 2001 (lf_1.0.5): CBH 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 the updated accordingly based on new vegetation data layers or disturbances. In this instance Refresh 2001 (lf_1.0.5) existing vegetation data layers (Existing Vegetation Type (lf_1.0.5), Existing Vegetation Cover (lf_1.0.5), Existing Vegetation Cover (lf_1.0.5) were utilized to implement the mapping process; based on the vintage of the data layers used, this is a Refresh 2001 (lf_1.0.5) CBH data set.
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): CBH 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 CBH values the Forest Service's Forest Vegetation Simulator (FVS) software was implemented to model a variety of disturbances at high, moderate and low severities.
Source_Used_Citation_Abbreviation:
E:\WorkSpace\datalist\metadata\edit_metadata\REFRESH\c01\FUEL\lf_105_cbh_20100913
Process_Date: 20130331
Process_Time: 090721

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: cbh
Entity_Type_Definition: Canopy Base Height
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 base height meters * 10
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 - 99
Enumerated_Domain_Value_Definition: CBH_m_x_10
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 100
Enumerated_Domain_Value_Definition: CBH > = 100
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Attribute:
Attribute_Label: Count
Attribute_Definition: Number of pixels
Attribute_Definition_Source: Landfire
Attribute_Domain_Values:
Unrepresentable_Domain: number of pixels
Attribute:
Attribute_Label: Cbh_m_x_10
Attribute_Definition: Canopy base height meters * 10
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 - 99
Enumerated_Domain_Value_Definition: CBH_m_x_10
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 100
Enumerated_Domain_Value_Definition: CBH > = 100
Enumerated_Domain_Value_Definition_Source: LANDFIRE
Overview_Description:
Entity_and_Attribute_Overview:
CBH data range: 0 - 10 meters (0 - 100 raster values m*10). 100 = thematic class of all values >= 10 meters AND hardwoods -9999 = NoData
Entity_and_Attribute_Detail_Citation: LANDFIRE Improvements Canopy Base Height

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: mailing and physical
Address: 47914 252nd Street
Address: USGS EROS
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
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 metadata document.
Distribution_Liability:
This product is reproduced from geospatial information prepared by the U.S. Department of Agriculture, Forest Service and 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 is in draft condition. Represented features may not be in an accurate geographic location. The Forest Service and USGS EROS make 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. The Forest Service and USGS EROS reserve the right to correct, update, modify, or replace this geospatial information without notification.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARC Grid
Format_Version_Number: ArcGIS 10.x
Format_Specification: Raster
Transfer_Size: 16.781
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://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: 20070201
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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