|Date(s):||Coverage Availability/Geographic Extent:||Footprint:||Source(s):|
|Creation date varies||Texas||State||TPWD|
The full TPWD Texas Ecological Systems Data data set can be downloaded directly.
Download the 5.5 GB file here:Download
Land Use - Land Cover
|Available Formats:||Shapefile and Raster|
|Known Issues:||Vectorized from Raster images, stair step effect|
|Recommended Uses:||Basemap, Research, Analysis|
The Landscape Ecology Program at [Texas Parks and Wildlife Department] (http://tpwd.texas.gov/), in cooperation with private, state, and federal partners, has produced a new 398 class, 10 meter spatial resolution land classification map for Texas, known as the Ecological Mapping Systems of Texas. This was accomplished by attributing land cover and abiotic variables to 10 meter resolution image objects generated from NAIP photographs, and then executing expert rules in the form of: land cover + abiotic variables = mapped type.
In some regions, enhanced satellite land cover classification, landform modeling efforts, or other ancillary data were included to map important current vegetation types. More than 14,000 ground data samples were collected in support of the mapping effort, the largest effort of this kind ever in Texas. Significant overall improvements over existing maps included better spatial and thematic resolution as well as the mapping of many live oak types statewide, evergreen versus deciduous shrublands in appropriate regions, a wide variety of disturbance types, and types over unique soils (e.g. salty, deep sand, gyp-influenced). The vegetation database resulted in an accuracy of 74% to 90%. These results are used by a wide variety of partners in Texas for conservation planning and management. Updates to the vegetation data may occur as funds are available in regions that are priorities for either TPWD or partners.
The Ecological Mapping Systems (EMS) dataset is available for download online by ecoregion in vector, or statewide in raster format. The EMS dataset is also available through an user-friendly, interactive web app known as the Texas Ecological Analytical Mapper (TEAM app). The TEAM app allows users to: view EMS data in relation to soils, hydrology, and ecoregion layers; print/export custom maps and reports of habitat data for custom areas/boundaries to PDF, KMZ, or Shapefiles; and calculate acres of vegetation types within an area of interest.