Landfire Forest Canopy Height (Hawaii) (Image Service)

Metadata Updated: December 3, 2020

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 height (CH) describes the average height of the top of the canopy for a stand. A spatially-explicit map of canopy height supplies information for fire behavior models such as FARSITE (Finney 1998) to determine the starting point for embers in the spotting model, calculate wind reductions, and compute the volume of crown fuels. In FARSITE, canopy characteristics are used to compute shading for fuel moisture calculations, wind reduction factors, spotting distances, crown fuel volume, spread characteristics of crown fires and incorporate the effects of ladder fuels for transitions from a surface to crown fire. Canopy characteristics refer to the tree canopy. Where there are tree canopies, i.e. existing vegetation types that are forest and woodland, LANDFIRE has attributed the grid with canopy characteristics with some exceptions. There will be no 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 as such. This is because LANDFIRE assumes the potential burnable biomass in the tree canopy has been accounted for in the surface fuel model parameters. For example, young or short conifer stands where the trees are represented by a shrub type fuel model will not have canopy characteristics. CH is derived from Existing Vegetation Height (EVH) using the Landfire Total Fuel Change (LFTFC) ArcGIS toolbar. Forested EVH values are reclassified from the five Landfire EVH codes to represent the midpoint of the classification. CH values are represented in meters times 10 starting with 25 and ending at 500. Where EVH is not forested or the tree height is considered to be part of the surface fuel CH receives a value of 0. Certain types of agriculture that a deemed burnable get a value added by LFTFC based on region and type of vegetation. Field plot data contributed either directly or indirectly to this LANDFIRE National data product. Go to https://landfire.gov/participate_refdata_sub.php for more information regarding contributors of field plot data. LANDFIRE 2014 (lf_1.4.0) and 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. Metadata and Downloads

Access & Use Information

Public: This dataset is intended for public access and use. License: See this page for license information.

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Dates

Metadata Created Date December 3, 2020
Metadata Updated Date December 3, 2020

Metadata Source

Harvested from USDA JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date December 3, 2020
Metadata Updated Date December 3, 2020
Publisher U.S. Forest Service
Unique Identifier Unknown
Maintainer
Identifier https://data-usfs.hub.arcgis.com/datasets/db856c93439d41d5b9e8aa9f9dfd965e
Data First Published 2019-08-09
Data Last Modified 2020-06-11
Category geospatial
Public Access Level public
Bureau Code 005:96
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Homepage URL https://data-usfs.hub.arcgis.com/datasets/db856c93439d41d5b9e8aa9f9dfd965e
License https://data-usfs.hub.arcgis.com/datasets/db856c93439d41d5b9e8aa9f9dfd965e/license.json
Metadata Type geospatial
Program Code 005:059
Source Datajson Identifier True
Source Hash b5de31f12d5cfddf0cd3e86a2bff87b24f905807
Source Schema Version 1.1
Spatial -160.5545,18.8399,-154.728,22.2867

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