FRID - Metadata

Identification_Information:
Citation:
Citation_Information:
Originator:
USDA Forest Service - Pacific Southwest Region - Remote Sensing Lab
Publication_Date: 20220824
Title: FRID metadata
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: McClellan, CA
Publisher: Remote Sensing Lab
Online_Linkage:
Description:
Abstract:
This polygon layer consists of information compiled about fire return intervals for major vegetation types on the 18 National Forests in California and adjacent land jurisdictions. Comparisons are made between pre-Euroamerican settlement and contemporary fire return intervals (FRIs). Current departures from the pre-Euroamerican settlement FRIs are calculated based on mean, median, minimum, and maximum FRI values. This map is a project of the USFS Pacific Southwest Region Ecology Program.

*******Note: This layer is comprised of multipart features, meaning a feature has more than one physical part but only references one set of attributes in the database. A group of islands could be represented as a multipart polygon feature. This allows for reduction in size of the database and portability across a network. For analysis purposes however, it is wise to select a smaller area of interest and break apart features using the "Multipart To Singlepart" tool in ArcGIS. In its entirety, a single part format of this feature class can be in the range of 500,000-1,000,000 polygons.
 
Purpose:
This layer may be used for land and resource planning and assessment, as well as other natural resource applications such as fuels treatment planning, postfire restoration project design, management response to fire, assessing the effects of fire on ecosystems, and general ecological understanding of the historic and current occurrence of fire on the California National Forests and neighboring jurisdictions.
 
Supplemental_Information:
*******Note: new metrics have been calculated using 1970 as a baseline. These metrics are useful for comparing changes over the last 50 years, since 1970 is when the National Park Service and some USFS wilderness areas began to allow naturally ignited fire to burn.

Information on pre-Euroamerican settlement FRIs (fire return interval) was compiled from an exhaustive review of the fire history literature, expert opinion, and vegetation modeling (Van de Water and Safford 2011; Safford and Van de Water 2014). Contemporary FRIs were calculated using the California Interagency Fire Perimeters database (maintained by the California Department of Forestry and Fire Protection (CalFire-FRAP). The vegetation type stratification was based on the US Forest Service E-Veg map (USDA Forest Service, Remote Sensing Lab) for California from the year 2011, with the vegetation typing (“CALVEG”) grouped into 28 pre-settlement fire regime (PFR) types, as defined by Van de Water and Safford (2011) The 2011 E-Veg map is used as the baseline for all subsequent FRID maps so as to freeze the underlying vegetation template and permit temporal comparisons without introducing vegetation type change as a confounding factor. Ideally a “potential natural vegetation” (PNV) map with hypothesized vegetation distribution before the arrival of Euroamericans in California would be used as the vegetation baseline, but current PNV maps either ignore fire as an ecological process or have issues with spatial accuracy or vegetation typing that make their employment at planning and project scales difficult. We hope to develop a robust PNV map for FRID calculations at some point in the early 2020s.

Although areas mapped as grasslands and meadows are included in the GIS layer, FRI and departure statistics are not calculated for these types because reliable information about pre-Angloamerican settlement fire regimes is lacking. In these cases, statistic fields are coded as -999 to indicate this condition.

See CALVEG classification and mapping - - and CalFire-FRAP Fire Perimeters database metadata - https://frap.fire.ca.gov/mapping/gis-data/ - for data limitations in these datasets. See below for metadata pertaining to each FRI field in the GIS database. See the Existing Vegetation Layer Description (Mid-Level) at for the first 17 fields.

YLF: “Year of Last Fire.” This is the year in which the polygon in question last experienced a fire that was recorded in the fire perimeter database. The fire perimeter database is not a perfect record of fire, and some regions in California are missing GIS data on all but the largest fires before the 1950’s. Most of the State is relatively complete for large and medium fires occurring after 1908 however, and we use this year as the baseline year for the FRID database.

TSLF: “Time Since Last Fire.” This is the number of years elapsed between the most recent fire recorded in the fire perimeters database and the version year of the FRID map being used. If the version year of the FRID map is 2019, and the polygon in question last burned in 1995, TSLF will read 24 (2019 minus 1995).

LastFireName: This is the name of the fire the polygon last experienced that was recorded in the fire perimeter database.

numFires: “Number of Fires.” The number of fires (according to the fire perimeters database) that occurred within a given polygon between 1908 and the version year of the FRID map being used. Small fires (generally <4 ha after 1950, <40 ha prior to 1950, see https://frap.fire.ca.gov/mapping/gis-data/ for more info) are not included in this database, so this number may be an underestimate of actual post-1908 fire frequencies for some areas.

numFires_1970: “Number of Fires since 1970.” New field added starting with the 2019 fire datasets. The number of fires (according to the fire perimeters database) that occurred within a given polygon between 1970 and the version year of the FRID map being used. This is meant to permit assessments and comparisons of fire frequency since the transition of the federal agencies from full fire suppression to fire management, which happened in the late 1960s and early 1970s.

firesLast40 - new field added starting with the 2018 fire datasets. This is the number of fires occurring for the polygon in the last 40 years. Purpose: To prioritize areas for postfire restoration it is valuable to know the number of fires within the study area over the last 40 years. Determining the fire return interval over the last few decades provides an indication of the regeneration capacity of native species, especially in areas that have recently burned more frequently than under the natural range of variation.

PFR: “Presettlement Fire Regime.” This field is a crosswalk from the current (2011) CALVEG vegetation type to its probable historical fire regime (by “historical”, we refer to the three or four centuries before Angloamerican settlement). Each PFR is named for the dominant vegetation type supported by that PFR. There are currently 28 PFRs in the FRID database, see Van de Water and Safford (2011) and Safford and Van de Water (2014) for details on PFR development and definition.
We mapped PFRs using the Forest Service CALVEG mapping classification. In most cases, multiple similar vegetation types (as identified by the CALVEG classification) are grouped within PFRs due to their similar relationship with fire. For example, the “yellow pine” PFR includes seven CALVEG types; the “chaparral and serotinous conifer” PFR includes 34 different CALVEG vegetation types. Pre-Euroamerican settlement FRIs for most vegetation types in California can be estimated from dendrochronological and charcoal deposition records, although information is limited for some vegetation types (i.e. Coastal Dune, Coastal Sage Scrub, Desert Mixed Shrub). In some areas, such as southern California, there is little reliable information about pre-Angloamerican settlement distribution of vegetation types, so the E-Veg vegetation map from 2011 (using the CALVEG vegetation classification) is used as the best available approximation. Some areas of the State used to support fire regimes and vegetation types that no longer exist there (i.e. Bigcone Douglas-Fir stands that have been converted to Chaparral, Chaparral and Coastal Sage Scrub stands that have been converted to grassland, desert vegetation types that now burn frequently due to invasion by cheat grass, yellow pine forests that have converted to mixed conifer due to lack of disturbance, etc.). In some cases this may complicate comparisons between pre-settlement and contemporary FRIs for areas which are currently dominated by non-analog vegetation types and fire regimes. Although areas mapped as grasslands and meadows are included in the GIS layer, FRI and departure statistics are not calculated for these types because reliable information about pre-Angloamerican settlement fire regimes is lacking.

fireRegimeGrp: This field assigns the standard National Fire Plan Fire Regime Group (Hardy et al. 2001) to each PFR. The Fire Regime Group combines fire frequency and fire severity, and pertains to the action of fire in the PFR before Angloamerican settlement.

currentFRI: The current fire return interval is calculated by dividing the number of years in the fire record (e.g., 2019-1908=112 years inclusive) by the number of fires occurring between 1908 and the current year in a given polygon plus one (CurrentFRI = Number of years/Number of fires +1). Although fires prior to 1908 are recorded in the fire perimeter database, they are not included in this analysis due to lack of consistency in reporting (1908 is the year that the US Forest Service began to formally record information on size and location of major fires). CurrentFRI is derived by overlaying the fire perimeters on the PFR polygons and summing the number of fires affecting each polygon after 1908.

currentFRI_1970: The current fire return interval using 1970 as the baseline year is calculated by dividing the number of years in the fire record (e.g., 2019-1970=50 years inclusive) by the number of fires occurring between 1970 and the current year in a given polygon plus one (currentFRI_1970 = Number of years/Number of fires +1).

meanRefFRI: The mean reference fire return interval is an approximation of how often, on average, a given PFR likely burned in the three or four centuries prior to significant Angloamerican settlement (i.e., before the middle of the 19th century). MeanRefFRI values are averages of mean FRI values taken from an exhaustive review of the published and unpublished literature pertaining to pre-Euroamerican settlement fire occurrence, see Van de Water and Safford (2011). Most mean FRI values used in this analysis are derived from small-scale (<4 ha) composite fire histories including records from multiple trees in a defined area. Composite FRIs represent the fire history of a given area better than point FRIs (derived from a single tree) because some fire events fail to scar every recording tree within the fire perimeter, especially in regimes characterized by frequent low intensity fire. Furthermore, composite FRIs are more sensitive and better suited to analyzing changes in fire occurrence than point FRIs. While there is some variability introduced by using composite FRIs from different sized areas, they are less likely to underestimate pre-Euroamerican settlement mean FRI values than point FRIs. Some PFRs, such as Yellow Pine and Dry Mixed Conifer, burned very frequently (mean FRIs of 11-12 years), while others such as Spruce-Hemlock and Desert Mixed Shrub burned very infrequently (mean FRIs of 275-636 years). A high degree of confidence can be placed in the validity of the FRI values of most conifer PFRs, especially in the Sierra Nevada, due to the abundance of published dendrochronological studies. Less confidence is afforded to the FRI values of PFRs in which pre-Euroamerican fire history is less well-studied, such as California Juniper, Desert Mixed Shrub, Semi-Desert Chaparral, and Silver Sagebrush. For shrub-dominated PFRs in which pre-settlement fires are difficult to detect due to lack of dendrochronological evidence, FRI values were derived from other types of data, such as charcoal in sediment cores, and expert quantitative estimates. Ignitions by indigenous peoples were likely a large component of the pre-Euroamerican settlement fire record in some PFRs, such as Redwood and Oak Woodland, and are difficult or impossible to differentiate from lightning ignitions. Some vegetation types in certain areas were probably maintained mostly by pre-Euroamerican anthropogenic fire regimes, which may have resulted in vegetation type conversions in some parts of the landscape prior to Euroamerican arrival. Widespread indigenous ignitions were probably uncommon in other PFRs, however, such as Subalpine Forest and Lodgepole Pine. Regardless, no attempt is made in this analysis to differentiate between lightning and indigenous ignitions.

medianRefFRI: The median reference fire return interval is an approximation of the center of pre-Euroamerican FRI distributions, from Van de Water and Safford (2011). Because FRI distributions are often skewed (with more short or long intervals, depending on the PFR), median FRI values may be a better approximation of how often a given PFR likely burned prior to Euroamerican settlement than mean FRIs. MedianRefFRI values are averages of median FRIs taken from an exhaustive review of the published and unpublished literature pertaining to pre-Euroamerican settlement fire occurrence. Most median FRI values used in this analysis are derived from small-scale (<4 ha) composite fire histories including records from multiple trees in a defined area. In a few cases, explicit information on median FRIs was not available (“NA”); in these cases we used the mean FRI for analysis.

minRefFRI: This is the mean of the minimum reference FRIs reported in the literature, from Van de Water and Safford (2011). The minimum reference fire return interval is an approximation of the minimum number of years between fires in a given PFR prior to Euroamerican settlement. An estimate of the lower bound of the FRI distribution facilitates better characterization of variability in pre-settlement fire regimes than measures of central tendency alone (i.e. mean or median). This allows managers to determine whether a given area is approaching or exceeding the historic range of variation in FRI. MinRefFRI values are averages of minimum FRIs taken from an exhaustive review of the published and unpublished literature pertaining to pre-Euroamerican settlement fire occurrence. Thus, the minimum values described in this assessment are not absolute minimums, but typical minimum values that would be expected across the geographical range of the PFR. Most minimum FRI values used in this analysis are derived from small-scale (<4 ha) composite fire histories including records from multiple trees in a defined area.

maxRefFRI: This is the mean of the maximum reference FRIs reported in the literature, from Van de Water and Safford (2011). The maximum reference fire return interval is an approximation of the maximum number of years between fires in a given PFR prior to Euroamerican settlement. An estimate of the upper bound of the FRI distribution facilitates better characterization of variability in pre-settlement fire regimes than measures of central tendency alone (i.e. mean or median). This allows managers to determine whether a given area is approaching or exceeding the historic range of variation in FRI. MaxRefFRI values derive from an exhaustive review of the published and unpublished literature pertaining to pre-Euroamerican settlement fire occurrence. Thus, the maximum values described in this assessment are not absolute maximums, but typical maximum values that would be expected across the geo-graphical range of the PFR. Most maximum FRI values used in this analysis are derived from small-scale (<4 ha) composite fire histories including records from multiple trees in a defined area.

meanPFRID (mean Percent FRID): This is a measure of the extent to which contemporary fires (i.e. since 1908) are burning at frequencies similar to the frequencies that occurred prior to Euroamerican settlement, with the mean reference FRI as the basis for comparison. Mean PFRID is a metric of fire return interval departure (FRID), and measures the departure of current FRI from reference mean FRI in percent. This measure does not return to zero when a fire occurs, unlike FRID values used in some other analyses (e.g., NPS FRID Index). Instead, the following formulas are used to calculate Mean PFRID: [1-(MeanRefFRI/CurrentFRI)]*100 when current FRI is longer than reference FRI (the common condition in most coniferous PFRs), and –{[1-(CurrentFRI/MeanRefFRI)]}*100 when current FRI is shorter than reference FRI (common in some shrub-dominated PFRs, and areas in the Wildland Urban Interface). For areas dominated by PFRs with a mean reference FRI greater than 112 years, and that have not burned in the period of historical record considered in this analysis (i.e. since 1908), the FRID is assumed to equal zero.

meanPFRID_1970: (Mean Percent FRID 1970): This is a measure of the extent to which contemporary fires (i.e. since 1970) are burning at frequencies similar to the frequencies that occurred prior to Euroamerican settlement, with the mean reference FRI as the basis for comparison. The same formulas are used as with meanPFRID but with 1970 as the baseline rather than 1908. Important note: because 1970 is the baseline for this measure, no fires before 1970 are taken into account and all PFRs start at a PFRID of zero beginning in 1970.

medianPFRID (median Percent FRID): This is a measure of the extent to which contemporary fires (i.e. since 1908) are burning at frequencies similar to the frequencies that occurred prior to Euroamerican settlement, with the median reference FRI as the basis for comparison. Median PFRID is a metric of fire return interval departure (FRID), and measures the departure of current FRI from reference median FRI in percent. See Safford and Van de Water (2014) for explanation of the medianPFRID measure and its use. This measure does not return to zero when a fire occurs, unlike FRID values used in some other analyses (e.g., NPS FRID Index). Instead, the following formulas are used to calculate Median PFRID: [1-(MedianRefFRI/CurrentFRI)]*100 when current FRI is longer than reference FRI (the common condition in most coniferous PFRs), and {–[1-(CurrentFRI/MedianRefFRI)]}*100 when current FRI is shorter than reference FRI (common in some shrub-dominated PFRs, and areas in the Wildland Urban Interface). For areas dominated by PFRs with a median reference FRI greater than 112 years, and that have not burned in the period of historical record considered in this analysis (i.e. since 1908), the FRID is assumed to equal zero. In a few cases, explicit information on median FRIs was not available (“NA”); in these cases we used the mean FRI for analysis.

minPFRID (minimum Percent FRID): This is a measure of the extent to which contemporary fires (i.e. since 1908) are burning at frequencies similar to the frequencies that occurred prior to Euroamerican settlement, with the mean minimum reference FRI as the basis for comparison. Min PFRID is a metric of fire return interval departure (FRID), and measures the departure of current FRI from reference mean minimum FRI in percent. See Safford and Van de Water (2014) for explanation of the minPFRID measure and its use. This measure does not return to zero when a fire occurs, unlike FRID values used in some other analyses (e.g., NPS FRID Index). Instead, the following formulas are used to calculate Min PFRID: [1-(MinRefFRI/CurrentFRI)]*100 when current FRI is longer than reference FRI (the common condition in most coniferous PFRs), and {–[1-(CurrentFRI/MinRefFRI)]}*100 when current FRI is shorter than reference FRI (common in some shrub-dominated PFRs, and areas in the Wildland Urban Interface). For areas dominated by PFRs with a minimum reference FRI greater than 112 years, and that have not burned in the period of historical record considered in this analysis (i.e. since 1908), the FRID is assumed to equal zero.

maxPFRID (maximum Percent FRID): This is a measure of the extent to which contemporary fires (i.e. since 1908) are burning at frequencies similar to the frequencies that occurred prior to Euroamerican settlement, with the mean maximum reference FRI as the basis for comparison. Max PFRID is a metric of fire return interval departure (FRID), and measures the departure of current FRI from reference mean maximum FRI in percent. See Safford and Van de Water (2014) for explanation of the maxPFRID measure and its use. This measure does not return to zero when a fire occurs, unlike FRID values used in some other analyses (e.g., NPS FRID Index). Instead, the following formulas are used to calculate Max PFRID: [1-(MaxRefFRI/CurrentFRI)]*100 when current FRI is longer than reference FRI (the common condition in most coniferous PFRs), and {–[1-(CurrentFRI/MaxRefFRI)]}*100 when current FRI is shorter than reference FRI (common in some shrub-dominated PFRs, and areas in the Wildland Urban Interface). For areas dominated by PFRs with a maximum reference FRI greater than 112 years, and that have not burned in the period of historical record considered in this analysis (i.e. since 1908), the FRID is assumed to equal zero.

meanCC_FRI: This is a condition class categorization of the data in the Mean PFRID field. MeanCC_FRI categorizes the percent differences calculated in Mean PFRID using the following scale: 0 to 33.3% departure = CC1, 33 to 66.7% departure = CC2, and >66.7% departure = CC3. Negative condition classes (i.e. where fires are burning more often that under pre-Angloamerican settlement conditions) are categorized on the negative of the same scale: 0 to -33.3% = CC-1, -33 to -66.7% = CC-2, <-66.7% = CC-3. CC1 and CC-1 are mapped in the same class because they are both within 33% of the mean pre-settlement value.

meanCC_FRI_1970: Similar to meanCC_FRI, this is a condition class categorization of the data in the MeanPFRID field using 1970 as the baseline year

NPS_FRID: This FRID measure was developed by the National Park Service for the southern Sierra Nevada (Caprio et al. 1997). NPS FRID was originally based on the MaxRefFRI, but current standard is to use the MeanRefFRI. NPS_FRID is based on this formula: FRID = [(MeanRefFRI – TSLF)/MeanRefFRI]. This measure differs from the PFRID and CC_FRI measures in that it does not consider the cumulative fire history of the polygon since 1908, but only the time since last fire (TSLF).

NPS_FRID_Index: This is an index of fire frequency departure derived from NPS_FRID. Values of NPS_FRID <-5 are “extreme”; values between -5 and -2 are “high”; values between -2 and 0 are “moderate”; values >0 are “low”.

Literature Cited:

Caprio, A.C., Conover, C., Keifer, M. and Lineback, P. 1997, November. Fire management and GIS: a framework for identifying and prioritizing fire planning needs. In Proceedings of the Symposium: Fire in California Ecosystems: Integrating Ecology, Prevention and Management (pp. 17-20).

Hardy, C.C., Schmidt, K.M., Menakis, J.P. and Sampson, R.N. 2001. Spatial data for national fire planning and fuel management. International Journal of Wildland Fire 10: 353-372.

Safford, H.D., and K.M. Van de Water. 2014. Using Fire Return Interval Departure (FRID) analysis to map spatial and temporal changes in fire frequency on National Forest lands in California. Research Paper PSW-RP-266, USDA Forest Service, Pacific Southwest Research Station, Albany, CA.

Van de Water, K.M., and H.D. Safford. 2011. A summary of fire frequency estimates for California vegetation before Euroamerican settlement. Fire Ecology 7(3): 26-58.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Annually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.551004
East_Bounding_Coordinate: -119.325442
North_Bounding_Coordinate: 38.483868
South_Bounding_Coordinate: 34.716617
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: FRID
Theme_Keyword: fire return interval departure
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service - Pacific Southwest Region
Contact_Person: Hugh Safford
Contact_Position: Regional Ecologist
Contact_Address:
Address_Type: unknown
Country: US
Contact_Voice_Telephone: 707-562-8934
Contact_Electronic_Mail_Address: hughsafford@fs.fed.us
Data_Set_Credit:
This is a joint product of the USDA Forest Service, Pacific Southwest Region Ecology Program; and the USDA Forest Service Pacific Southwest Region Remote Sensing Lab.
Cite this document as: Safford, H.D., and K. van de Water. 2012. California Fire Return Interval Departure (FRID) map metadata: description of purpose, data sources, database fields, and their calculations. USDA Forest Service, Pacific Southwest Region, Vallejo CA. URL: (internal site)
Cite the GIS product as: Safford, H.D., K. van de Water, and C. Clark. 2020. California Fire Return Interval Departure (FRID) map, 2019 version. USDA Forest Service, Pacific Southwest Region, Sacramento and Vallejo, CA. URL:
Security_Information:
Security_Classification_System: None in place
Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333
Cross_Reference:
Citation_Information:
Title: CALVEG 2000

Data_Quality_Information:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: \
Geospatial_Data_Presentation_Form: Source Format: \Capture Method:
Other_Citation_Details: Projection: \Datum:
Type_of_Source_Media: None

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 0

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 California Teale Albers
Albers_Conical_Equal_Area:
Standard_Parallel: 34.0
Standard_Parallel: 40.5
Longitude_of_Central_Meridian: -120.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 0.0
False_Northing: -4000000.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001
Planar_Distance_Units: meter
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: FinalFRID_Template_2020v2
Entity_Type_Definition_Source:
For a listing of valid values for Existing Vegetation fields, go to <http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5365219> ; for a description of FRI fields, see Supplemental Information section
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: SHAPE
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: SAF_COVER_TYPE
Attribute:
Attribute_Label: SRM_COVER_TYPE
Attribute:
Attribute_Label: REGIONAL_DOMINANCE_TYPE_1
Attribute:
Attribute_Label: OS_TREE_DIAMETER_CLASS_1
Attribute:
Attribute_Label: TREE_CFA_CLASS_1
Attribute:
Attribute_Label: REGIONAL_DOMINANCE_TYPE_2
Attribute:
Attribute_Label: OS_TREE_DIAMETER_CLASS_2
Attribute:
Attribute_Label: REGIONAL_DOMINANCE_TYPE_3
Attribute:
Attribute_Label: COVERTYPE
Attribute:
Attribute_Label: CON_CFA
Attribute:
Attribute_Label: HDW_CFA
Attribute:
Attribute_Label: SHB_CFA
Attribute:
Attribute_Label: TOTAL_TREE_CFA
Attribute:
Attribute_Label: WHRLIFEFORM
Attribute:
Attribute_Label: WHRTYPE
Attribute:
Attribute_Label: WHRSIZE
Attribute:
Attribute_Label: WHRDENSITY
Attribute:
Attribute_Label: YLF
Attribute:
Attribute_Label: TSLF
Attribute:
Attribute_Label: LastFireName
Attribute:
Attribute_Label: numFires
Attribute:
Attribute_Label: numFires_1970
Attribute:
Attribute_Label: firesLast40
Attribute:
Attribute_Label: PFR
Attribute:
Attribute_Label: fireRegimeGrp
Attribute:
Attribute_Label: currentFRI
Attribute:
Attribute_Label: currentFRI_1970
Attribute:
Attribute_Label: meanRefFRI
Attribute:
Attribute_Label: medianRefFRI
Attribute:
Attribute_Label: minRefFRI
Attribute:
Attribute_Label: maxRefFRI
Attribute:
Attribute_Label: meanPFRID
Attribute:
Attribute_Label: meanPFRID_1970
Attribute:
Attribute_Label: medianPFRID
Attribute:
Attribute_Label: minPFRID
Attribute:
Attribute_Label: maxPFRID
Attribute:
Attribute_Label: meanCC_FRI
Attribute:
Attribute_Label: meanCC_FRI_1970
Attribute:
Attribute_Label: NPS_FRID
Attribute:
Attribute_Label: NPS_FRID_Index
Attribute:
Attribute_Label: SHAPE_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: SHAPE_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.

Metadata_Reference_Information:
Metadata_Date: 20200623
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
USDA Forest Service - Pacific Southwest Region - Remote Sensing Lab
Contact_Person: GIS Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 3237 Peacekeeper Way, Suite 201
City: McClellan
State_or_Province: CA
Postal_Code: 95652
Country: US
Contact_Voice_Telephone: 916-640-1000
Contact_Facsimile_Telephone: 916-640-1291
Hours_of_Service: 0800 - 1700 M - F, PT
Contact_Instructions: Office is closed on federal holidays
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time


Key Contacts

Questions about the data? Please contact the individual listed in the dataset's metadata under primary contact or metadata contact.