Landfire Existing Vegetation Type

Metadata Updated: December 3, 2020

LANDFIRE's (LF) Image Services can be accessed here.A terrestrial ecological system is defined as a group of plant community types (associations) that tend to co-occur within landscapes with similar ecological processes, substrates, and/or environmental gradients.The LF Ecological Systems Descriptions for CONUS provides descriptions for each Ecological System including species, distribution and classification information.EVT also includes ruderal or semi-natural vegetation types within the U.S. National Vegetation Classification. The LF Ruderal NVC Groups Descriptions for CONUS provides descriptions for each ruderal NVC Group including species, distribution, and classification information.EVT is mapped using decision tree models, field data, Landsat imagery, elevation, and biophysical gradient data.Decision tree models are developed separately for each of the three lifeforms—tree, shrub, and herbaceous and are then used to generate lifeform specific EVT layers.Disturbance products are included in LF Remap products to describe areas on the landscape that have experienced change within the previous 10-year period.The EVT product is reconciled through QA/QC measures to ensure life-form is synchronized with both Existing Vegetation Cover and Existing Vegetation Height.LF Remap Auto-Keys: Learn about the redesign of the Auto-Keys process, which is used to determine existing vegetation type classification based on plot data in the LFRDB — Developing Auto-Keys for LF Vegetation Mapping: 2014-2015 CONUS Project ReportLF uses an assessment process that compares the EVT product for a pixel with the Auto-Key EVT assignment for a sample plot contained in that pixel. Agreement assessments have has been developed for each LF Remap CONUS GeoArea.

Access & Use Information

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

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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
Data First Published 2020-06-11
Data Last Modified 2020-10-16
Category geospatial
Public Access Level public
Bureau Code 005:96
Metadata Context
Schema Version
Catalog Describedby
Homepage URL
Metadata Type geospatial
Program Code 005:059
Source Datajson Identifier True
Source Hash e8ca7ab06245de96d113f8bdc1fe14d4b52c97be
Source Schema Version 1.1
Spatial -131.362,6.898,-65.638,72.622

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