Utah Landcover Classification

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Collin G. Homer, Dept. of Geography and Earth Resources, Utah State University Logan, Utah 84322

Publication_Date: 1995

Title: Utah Landcover Classification

Geospatial_Data_Presentation_Form: raster digital data

Online_Linkage: <http://earth.gis.usu.edu/>

Description:

Purpose:

The digital landcover dataset may be used for various purposes with user's discretion. Specifically, this dataset was created for regional terrestrial biodiversity assessment. These data are not intended to be used at scales larger than 1:100,000.

Abstract:

The goal of the Utah vegetation cover-type map was to produce a flexible, state wide database meeting the requirments of the USGS Gap Analysis Program. Fourteen Landsat scenes were mosaicked and subset into three ecoregions. Criteria for ecoregion definition not only focused on an ecological definition of landscapes and plant biology, but also on avoiding mixing of cover-types with a high probablity of spectral signature confusion.

Supplemental_Information:

For more detailed information see: RSGIS Laboratory. 1995. Utah Gap Vegetation Mapping Document.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1988

Ending_Date: 1989

Currentness_Reference: ground condition

Status:

Progress: complete

Maintenance_and_Update_Frequency: none planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -114

East_Bounding_Coordinate: -113

North_Bounding_Coordinate: 42

South_Bounding_Coordinate: 36.5

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: landcover

Theme_Keyword: vegetation cover

Theme_Keyword: GAP

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Southwest U.S.

Place_Keyword: Utah

Access_Constraints: none

Use_Constraints:

Appropriate scale for these data is 1: 100,000 smaller. The user assumes responsiblity when using this dataset.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Remote Sensing/GIS Laboratory, College of Natural Resources, Utah State University

Contact_Person: Director or Assistant Director

Contact_Address:

Address_Type: mailing

Address: UMC 5275

City: Logan

State_or_Province: Utah

Postal_Code: 84322-5275

Country: USA

Contact_Voice_Telephone: 435-797-2383

Data_Set_Credit:

Collin G. Homer RS/GIS Laboratory, College of Natural Resources, UMC 5275, Utah State University, Logan, UT 84322-5275,

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Overall accuracy was assessed at 75.3% overall. For more information on accuracy assessment approach see: Edwards, T. C. Jr. 1995. Utah Gap Analysis: An Environmental Information System. Final Project Report 95-1, Utah Cooperative Fish and Wildlife Reearch Unit, Utah State University, Logan, Utah.

Logical_Consistency_Report: Not applicable for raster data

Completeness_Report:

All cells within this image have been attributed with a field called class_name. See Process_Description for more details.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

United States Geological Survey EROS Data Center, National Elevation Dataset

Publication_Date: Unknown

Title: 30 Meter Digital Elevation Model

Geospatial_Data_Presentation_Form: raster digital data

Type_of_Source_Media: digital

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1988

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: U.S.G.S Eros Data Center

Source_Contribution:

A digital elevation model (DEM) obtained from the National Elevation Dataset (NED) in 1988 was used to generate the topographically derived ancillary datasets: elevation, slope, and aspect.

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey, EROS Data Center

Publication_Date: 1988-1991

Title: Landsat 5 Thematic Mapper Imagery

Geospatial_Data_Presentation_Form: raster digital data

Type_of_Source_Media: digital

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1988

Ending_Date: 1989

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: U.S.G.S Eros Data Center

Source_Contribution: Satellite imagery used for land cover mapping

Process_Step:

Process_Date: 1990-1995

Process_Description:

1) Fourteen Landsat 5 TM scenes were geographically registered using 1:24,000 USGS quadrangles or USGS 1:24,000 orthophoto quads. 2) Landsat scenes were standardized via histogram adjustment and mosaicked. 3) Three major ecoregions were used to avoid mixing of cover-types with high probablity of spectral signature confusion. 4) Digital classification was peformed on each ecoregion separately. Classification involved: a) Unsupervised spectral clusters using ISODATA algoritm. 100 clusters were used intially to segment the image mosaic, and resulting cluster image was evaluated by examing the average standard deviation for each signature, providing a measure of variablity for the signature. Additional ISODATA cluster images were created using incremtal increases of 25 clusters until a "point of diminishing returns" was reached based on the average standard deviation (variablity) for each signature. 5) Training data obtained from ground data collection and air photo interpretation. Legend attributes followed UNESCO hierarchical classification system. 6) Modeling was performed on each ecoregion separately and involved two phases: first, statistical association of spectral clusters with cover-type classes, and second, ecological modeling based on ancillary, DEM derived datasets.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: raster

Raster_Object_Information:

Raster_Object_Type: pixel

Row_Count: 14855

Column_Count: 18609

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 12

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -111

Latitude_of_Projection_Origin: 0.0

False_Easting: 500000

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 30

Ordinate_Resolution: 30

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927

Ellipsoid_Name: Clarke 1866

Semi-major_Axis: 6378206.4

Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Detail_Citation:

For more detailed information see: RSGIS Laboratory. 1995. Utah Gap Vegetation Mapping Document. Appendix G.

Entity_and_Attribute_Overview:

The following fields are present in the Nevada landcover dataset:

Complete descriptions of each landcover class are available in the document:

RSGIS Laboratory. 1995. Utah Gap Vegetation Mapping Document. Appendix G.

The field CLASS_NAMES contains the following attributes:

Agriculture, Apline, Aspen, Aspen/Conifer, Barren, Blackbrush, Creosote-Bursage, Desert Grassland, Dry Meadow, Grassland, Greasewood, Juniper, Lodgepole, Lodgepole/Aspen, Lowland Riparian, Maple, Mt. Fir, Mt. Fir/Mt. Shrub, Mt. Mahogany, Mt. Riparian, Mt. Shrub, Oak, Pickleweed Barrens, Pinyon, Pninyon-Juniper, Ponderosa Pine, Ponderosa Pine/Mt. Shrub, Sagebrush, Sagebrush/Perennial Grass, Salt Desert Scrub, Spruce-Fir, Spruce-Fir/Mt. Shrub, Urban, Water, Wetland, Wet Meadow, Cloud

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Director or Assistant Director

Contact_Organization:

RS/GIS Laboratory, College of Natural Resources, Utah State University,

Contact_Address:

Address_Type: mailing address

Address: UMC 5275, Utah State University

City: Logan

State_or_Province: Utah

Postal_Code: 84322-5275

Country: U.S.A.

Contact_Voice_Telephone: 435-797-2385

Contact_Electronic_Mail_Address: irdiac@gis.usu.edu

Resource_Description: Nevada Landcover Classification

Distribution_Liability:

The RS/GIS Laboratory, Utah State University nor any institution responsible for creating this dataset are responsible for the re-distribution, content, or use of these data.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name:

"ERDAS" ERDAS image files (ERDAS Corporation) or ArcInfo GRID format (ESRI)

Format_Version_Number: ERDAS Imagine 8.6 or Workstation ArcInfo 8.0.2

File_Decompression_Technique:

Compression type *.zip or *.tgz. For windows use WinZip. For UNIX use tar -zxf <filename>.tgz

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://earth.gis.usu.edu/>

Fees: none

Metadata_Reference_Information:

Metadata_Date: 200410

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Directory or Assistant Director

Contact_Organization: RS/GIS Laboratory, Utah State University

Contact_Address:

Address_Type: mailing

Address: UMC 5275, Utah State University

City: Logan

State_or_Province: Utah

Postal_Code: 84322-5275

Country: U.S.A.

Contact_Voice_Telephone: 435-797-2385

Contact_Electronic_Mail_Address: irdiac@gis.usu.edu

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Access_Constraints: none

Metadata_Use_Constraints: none

Metadata_Security_Information:

Metadata_Security_Classification_System: none

Metadata_Security_Classification: unclassified

Metadata_Security_Handling_Description: none

Metadata_Language: English