Identification_Information:
Citation:
Citation_Information:
Originator: Wyoming Gap Analysis
Publication_Date: 19961201
Title: Land Cover for Wyoming (Snake River Corridor)
Edition: 2
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Laramie, Wyoming
Publisher: Wyoming Water Resources Center
Online_Linkage: <URL:http://www.src.uwyo.edu/data.html>Gen. Env.

Description:
Abstract:
This data contains land cover (mostly vegetation types) for
the entire state of Wyoming. Each polygon is linked to attribute
fields describing primary and secondary land cover, crown
closure, wetlands, disturbance and other important land cover
types occurring within the polygon. Only the fields for primary
land cover and percentage of each polygon occupied by that land
cover are complete in the coverage, but other attribute fields
are populated when information was available.

Purpose:
The primary purpose of this data was to provide information on the
geographic distribution of land cover (primarily vegetation types) for
the Wyoming Gap Analysis project (WY-GAP).
The secondary purpose of the data was to provide a variable
(vegetation as habitat) for the purposes of mapping vertebrate
species habitat associations for WY-GAP.
This data may also be used for a variety of coarse (regional) scale
landscape analysis/management purposes pertaining to land cover.

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1994
Currentness_Reference: Publication date of sources

Status:
Progress: complete
Maintenance_and_Update_Frequency:
There are no current plans for updating the land cover data, though
National Gap has indicated a possible 10 year interval for updating
the information.

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -111.044
East_Bounding_Coordinate: -110.376
North_Bounding_Coordinate: 44.125
South_Bounding_Coordinate: 43.125

Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: land cover
Theme_Keyword: gap analysis
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Wyoming

Access_Constraints: None.

Use_Constraints:

This dataset was produced with an intended application at the state or
ecoregion level - geographic areas from several hundred thousand to
millions of hectares in size. The data provide a course-filter approach
to analyses, meaning that not every occurrence of animal habitat is
mapped; only large, generalized distributions are mapped, based on
the USGS 1:100,000 mapping scale in both detail and precision.
Therefore, this dataset can be used appropriately for coarse-scale
(> 1:100,000) applications, or to provide context for finer-level maps
or applications.
Appropriate uses include:
1. statewide biodiversity planning;
2. regional and large area resource planning;
3. coarse-filter evaluation of potential impacts or benefits of major
projects/initiatives on biodiversity - such as utility or transportation
corridors, wilderness proposals, open space or recreation proposals;
4. environmental impact assessment for large projects
such as military activities;
5. education at all levels for both students and citizens.

Inappropriate uses of this data include:
1. Generating specific measurements from the data finer than the
nearest thousand hectares;
2. Establishing exact boundaries for regulation or acquisition;
3. Establishing definite presence or absence of any element;
4. Determining abundance, health, or condition of any element;
5. Establishing a measure of accuracy of any other data by
comparison with this dataset;
6. Combining this data with any other data finer than
1:100,000-scale for analysis;
7. Use of this data to map small areas (less than thousands of
hectares) typically requiring mapping resolution at 1:24,000-scale
and using aerial photographs or ground surveys;
8. Altering the data in anyway and redistributing it as a GAP product.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GIS lab coordinator
Contact_Organization: Wyoming Water Resources Center
Contact_Address:
Address_Type: mailing address
Address: Box 3067 University Station
City: Laramie
State_or_Province: Wyoming
Country: USA
Postal_Code: 82071
Contact_Voice_Telephone: 307-766-2735
Contact_Electronic_Mail_Address: n/a
Hours_of_Service: 8 AM to 5 PM MST

Data_Set_Credit:
Dr. William Reiners, Ken Driese, Rob Thurston, Dept.
of Botany, University of Wyoming: development.

Native_Data_Set_Environment:
The data was created in and is stored in Arc/Info 7.0.4 software for
Unix operating system. Arc/Info stores this data in a directory under
the coverage name, landcov, and also in an associated INFO database
directory. The Arc/Info coverage can be output in an export format
is 2.3 megabytes (MB) in size.
When the export file is converted back to an Arc/Info coverage,
all associated files total to approximately 1.5 MB.

Cross_Reference:
Citation_Information:
Originator: Cowardin, L.M., Carter, V., Golet, F.C., and E.T. La Roe.
Publication_Date: 1992
Title: Classifications of wetlands and deepwater habitats of the United States.
Publication_Information:
Publication_Place: n/a
Publisher: U.S. Fish and Wildlife Service FWS/OBS-79/31
Other_Citation_Details: Publication on classification of wetlands.
Cross_Reference:
Citation_Information:
Originator:
Scott, J.M., F.Davis, B.Csuti, R.Noss, B.Butterfield, C.Groves, H.Anderson,
S. Caicco, F.D'Erchia,T.C.Edwards,J.Ulliman and G.Wright.
Publication_Date: 1993
Title: Gap Analysis: a geographic approach to protection of biological diversity.
Publication_Information:
Publication_Place: n/a
Publisher: Wildlife Monographs 123
Other_Citation_Details: Article on methods of gap analysis.
Cross_Reference:
Citation_Information:
Originator: Davis, F.W., P.A. Stine, D.M. Stoms, M.I. Bouchert, and A.D. Hollander.
Publication_Date: 1995.
Title: Gap Analysis of the actual vegetation of California, the southwestern region.
Publication_Information:
Publication_Place: n/a
Publisher: Madrona 42:40-78
Other_Citation_Details: Article on methods of developing GAP land cover.
Cross_Reference:
Citation_Information:
Originator: Driscoll, R.S., D.L. Merkel, D.L. Radloff, D.E. Snyder, J.S. Hagihara.
Publication_Date: 1984
Title: An Ecological land classification framework of the United States.
Publication_Information:
Publication_Place: Washington D.C.
Publisher: U.S. Dept. Agric. Misc. Pub. 1439
Other_Citation_Details: Publication on land cover classification.
Cross_Reference:
Citation_Information:
Originator: Thurston, R.C.
Publication_Date: 1993
Title: Data management and image processing for the Wyoming Gap project.
Publication_Information:
Publication_Place: Laramie, WY
Publisher: Botany Dept, Univ. of Wyoming (unpublished manual)
Cross_Reference:
Citation_Information:
Originator: Driese, K.L, W.A. Reiners, E.H. Merrill, and K.G. Gerow.
Publication_Date: 1996
Title: A digital land cover map of Wyoming, USA: A tool for vegetation analysis.
Publication_Information:
Publication_Place: n/a
Publisher: Journal of Vegetation Science (in press)

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The accuracy is not based on a formal quantitative assessment. Field checking was
performed by personnel from agencies such as the BLM, Forest Service, Fish and
Wildlife Service, Natural Resource Conservation Service, Wyoming Game and Fish
Department, and the Nature Conservancy, on a volunteer basis. There was no
systematic sampling of polygons to be field-checked and because of the 100 hectare
minimum mapping unit of the polygons, verifying the primary land cover type
and other attributes cannot always be reliably done on the ground.
Of a total of 14,690 polygons digitized for Wyoming, 1809 (12.3%) were checked
in the field, and 1439 (79.6%) of these polygons were determined to be correct by the
checkers.
To attain a better estimate of accuracy, a formal statistical evaluation
utilizing aerial videography validation techniques is in progress, and is due
to be completed by 1998. The aerial videography may also provide training data
for future updates of the land cover map.

Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: Based on informal field checking, the accuracy of the land cover data is 79.6%.
Attribute_Accuracy_Explanation: See above.
Logical_Consistency_Report:
All polygons are closed and adjacent polygons do not have identical
attributes. Each polygon has one and only one attribute.

Completeness_Report:
The minimum mapping unit for polygons in this coverage is 100 ha
for upland cover types and 40 ha for water/wetland/riparian types.
Because of the minimum mapping unit, rules of generalization have
been applied to this dataset, and its attributes are completed
for the level of detail that may be interpreted at the 100 ha
and 40 ha minimum mapping units.

All polygons include attributes for primary land cover and
the percent of the polygon occupied by that cover, codes for
the source of information from which the polygon was digitized,
and codes identifying the digitizer. Other attributes may
not be complete for all polygons, either because attributes
did not apply to that particular polygon (primary crown cover
does not apply to non-forested types), or attributes could
not be filled for lack of information/restrictions of the
minimum mapping unit.

Approximately 88% of polygons have a secondary cover attribute
and percent secondary cover attribute; 15% polygons have a
percentage crown attribute; 21 have an other land cover attribute;
11% have a wetlands attribute and 2% have a disturbance attribute.

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Does not apply at the scale of this data or for its purpose.

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Various sources
Publication_Date: 1987-1993
Title: Landsat Thematic Mapper Satellite Images
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1988
Ending_Date: 1993
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: TM image
Source_Contribution:
The images were used for interpretation of land cover.
23 images were used across Wyoming. Name, path/row, date
source, and individuals responsible for processing the
scenes are available in files associated with this dataset.
See the entity and attribute section for more details.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Wyoming Dept. of Agriculture, Geologic Survey
Publication_Date: 1987
Title: Wyoming Land Inventory Map
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1987
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: WLI
Source_Contribution:
Interpretation of land cover for the area of southeastern
Wyoming where there were no TM images available (at the time)
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Larry Munn, Dept. of Plant, Soil and Insect Science,
University of Wyoming.
Publication_Date: unknown
Title: SPOT image
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1990
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: SPOT image
Source_Contribution:
Interpretation of land cover for the area around Torrington
Wyoming where there was no TM image available (at the time)
Process_Step:
Process_Description:
Data from the TM images was resampled from original 30 m
resolution to 100 m resolution and contrast stretched using
a normalized contrast table and MIPS software.
TM bands 3,4, and 5 were then exported to Arc/Info in ERDAS format
and displayed as false colored images for interpretation.
Additional sources such as the WLI map and the
SPOT image were used to delineate polygon boundaries where
TM images were not available in areas of southeastern Wyoming.
Source_Used_Citation_Abbreviation: TM image
Process_Date: 1991-1993
Process_Step:
Process_Description:
Polygons were digitized on the computer screen by using a
mouse to draw lines over the 3 band false color TM image. These
polygons delineate relatively homogeneous spectral regions on the
imagery. Polygons were subsequently edited and assigned
attributes within the ARCEDIT environment by incorporating
photointerpretation techniques, maps available from federal,
state and local agencies, information from journal articles and
graduate theses, conversations with field workers and field
reconnaissance. A detailed description of the methods used for
delineation and labeling of polygons is available upon request
from the Botany Dept, University of Wyoming.
Source_Used_Citation_Abbreviation: TM image, WLI map, SPOT image
Process_Date: 1992-1994.
Process_Step:
Process_Description:
Plots of the landcover map at a 1:100,000 scale were distributed to
field personnel in different agencies for field checking of the primary
land cover attribute. (See attribute accuracy section for more
details). Corrections suggested from field checking were incorporated
into the draft map, resulting in the first version of the map and
database published in Jan. 1995.
Process_Date: 1994
Process_Step:
Process_Description:
Corrections were made to polygons and attributes based on errors
identified by users after initial distribution. Total of number of
polygons in first version (14,753) was changed to 14,732 in the second
version. Contact Ken Driese, coverage developer, for more information
on these corrections (Dr. William Reiners office, Dept. of Botany,
University of Wyoming). The most major attribute change was to
polygon ID 19120, changed from primary 42001 (spruce-fir) to 32007
(Wyoming big sagebrush).
Process_Date: 1996.

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 14710
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 65543
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 14710

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0001
Longitude_Resolution: 0.0001
Geographic_Coordinate_Units: decimal degrees

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: LANDCOV.PAT
Entity_Type_Definition: Contains codes for attributes pertaining to land cover.
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: landcov-id
Attribute_Definition: Identifer for each of the polygons in landcov
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 60781
Attribute:
Attribute_Label: Primary
Attribute_Definition: Codes for primary land cover type
Attribute_Definition_Source: Land cover classification
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for land cover types
Codeset_Source: Codes described in landcov.name file
Attribute:
Attribute_Label: Prim_Percent
Attribute_Definition: percent primary cover in polygon
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute:
Attribute_Label: Secondary
Attribute_Definition: Codes for secondary land cover type
Attribute_Definition_Source: land cover classification
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for land cover types
Codeset_Source: Codes described in landcov.name file
Attribute:
Attribute_Label: Sec_percent
Attribute_Definition: percent secondary cover in polygon
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute:
Attribute_Label: prim_crown
Attribute_Definition: Amount of crown closure (canopy) for primary forest types
Attribute_Definition_Source: interpretation from images
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for crown closure
Codeset_Source: Codes described in landcov.crown file
Attribute:
Attribute_Label: wetlands
Attribute_Definition:
Most important wetland (or deep water type) occurring in
the polygon (if any)
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for wetland types
Codeset_Source: Codes described in landcov.wetland file
Attribute:
Attribute_Label: other
Attribute_Definition: Code for other land cover type present in the polygon
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for land cover types
Codeset_Source: Codes described in landcov.name file
Attribute:
Attribute_Label: disturbance
Attribute_Definition: Disturbance found within within the polygon (if any)
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for disturbance types
Codeset_Source: Codes described in landcov.disturbance file
Attribute:
Attribute_Label: scenecode
Attribute_Definition:
Reference to the TM image scene used to add attributes
to the polygon, and delineate the polygon boundary
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for TM image scenes
Codeset_Source: Codes described in landcov.scene file
Attribute:
Attribute_Label: source
Attribute_Definition:
Reference link to sources of information used to add
attributes to the polygon
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for source references
Codeset_Source: Codes described in landcov.source file
Attribute:
Attribute_Label: checked
Attribute_Definition:
Indication of whether or not the polygon attributes
have been checked in the field
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for related to checking
Codeset_Source: Codes described in landcov.checked file
Attribute:
Attribute_Label: checker
Attribute_Definition:
Name of the individual who field checked the polygon,
if it was checked
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for names of checkers
Codeset_Source: Codes described in landcov.checker file
Entity_Type:
Entity_Type_Label: LANDCOV.REL
Entity_Type_Definition:
Relation table between items in landcov.pat to
related files containing descriptions of codes
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: various fields for relating tables
Attribute_Definition:
The items in this table contain relate keywords and
definitons so that a database link can be made between
landcov.pat and its related files
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Unrepresentable_Domain: domain defined by Arc/Info
Entity_Type:
Entity_Type_Label: LANDCOV.NAME
Entity_Type_Definition:
Contains names of land cover types associated with
primary, secondary and other attributes
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: primary, secondary, other
Attribute_Definition: land cover codes
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for land cover types
Codeset_Source: land cover classification
Attribute:
Attribute_Label: description
Attribute_Definition: description of land cover types
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: 41 descriptions
Codeset_Source: this file (landcov.name)
Entity_Type:
Entity_Type_Label: LANDCOV.WETLANDS
Entity_Type_Definition: Contains description of wetlands codes
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: wetlands
Attribute_Definition: code for wetlands types
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for wetlands types
Codeset_Source: n/a
Attribute:
Attribute_Label: description
Attribute_Definition: description of wetland types
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: 37 descriptions
Codeset_Source: this file (landcov.wetlands)
Entity_Type:
Entity_Type_Label: LANDCOV.CROWN
Entity_Type_Definition: Contains description of crown (canopy) closure codes
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: prim_crown
Attribute_Definition: code for crown closure
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for crown closure
Codeset_Source: this file (landcov.crown)
Attribute:
Attribute_Label: description
Attribute_Definition: description of crown codes
Attribute_Definition_Source: Codeset_Domain Codeset_Name
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: description of crown closure codes
Codeset_Source: this file (landcov.crown)
Entity_Type:
Entity_Type_Label: LANDCOV.DISTURBANCE
Entity_Type_Definition: Contains description of disturbance codes
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: disturbance
Attribute_Definition: codes for disturbance type
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Disturbance codes
Codeset_Source: n/a
Attribute:
Attribute_Label: description
Attribute_Definition: description of disturbance codes
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: 10 descriptions
Codeset_Source: this file (landcov.disturbance)
Entity_Type:
Entity_Type_Label: LANDCOV.SCENE
Entity_Type_Definition: Contains attributes of satellite image scenes
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: scenecode
Attribute_Definition: codes for image scenes
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Scene codes
Codeset_Source: n/a
Attribute:
Attribute_Label: name
Attribute_Definition: name of scene (region it covers)
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: names of scene
Codeset_Source: this file (landcov.scene)
Attribute:
Attribute_Label: ID
Attribute_Definition: identification code of scene
Attribute_Definition_Source: EOSAT
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: identification code
Codeset_Source: this file (landcov.scene)
Attribute:
Attribute_Label: path
Attribute_Definition: path of satellite
Attribute_Definition_Source: EOSAT
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: path number
Codeset_Source: this file (landcov.scene)
Attribute:
Attribute_Label: row
Attribute_Definition: row of satellite
Attribute_Definition_Source: EOSAT
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: row number
Codeset_Source: this file (landcov.scene)
Attribute:
Attribute_Label: source
Attribute_Definition: where image was obtained
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: person or place
Codeset_Source: this file (landcov.scene)
Attribute:
Attribute_Label: processor
Attribute_Definition: Person responsible for image processing
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: name of person
Codeset_Source: this file (landcov.scene)
Attribute:
Attribute_Label: digitizers
Attribute_Definition: People/deptartment responsible for digitizing the polygons
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: name of person or department
Codeset_Source: this file (landcov.scene)
Attribute:
Attribute_Label: labelers
Attribute_Definition: People/department responsible for labeling the polygons
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: name of person or department
Codeset_Source: this file (landcov.scene)
Entity_Type:
Entity_Type_Label: LANDCOV.SOURCE
Entity_Type_Definition: Description of sources used to label the polygons
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: source
Attribute_Definition: source codes
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Source codes
Codeset_Source: n/a
Attribute:
Attribute_Label: description
Attribute_Definition: description of source code
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: description of source (literature/person)
Codeset_Source: this file (landcov.source)
Entity_Type:
Entity_Type_Label: LANDCOV.CHECKER
Entity_Type_Definition:
Description of codes used to identify people who field-
checked the polygon attributes
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: checker
Attribute_Definition: checker codes
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: checker codes
Codeset_Source: n/a
Attribute:
Attribute_Label: name
Attribute_Definition: name of checker
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: name of checker
Codeset_Source: this file (landcov.checker)
Attribute:
Attribute_Label: agency
Attribute_Definition: affiliated agency of checker
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: agency name
Codeset_Source: this file (landcov.checker)
Attribute:
Attribute_Label: date
Attribute_Definition: data that polygon was checked
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: date
Codeset_Source: this file (landcov.checker)
Entity_Type:
Entity_Type_Label: LANDCOV.CHECKED
Entity_Type_Definition:
Description of codes indicating whether or not polgon was
field checked
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: checked
Attribute_Definition: code for checked
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: codes for checked
Codeset_Source: this file (landcov.checked)
Attribute:
Attribute_Label: description
Attribute_Definition: description of checked codes
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: description of checked code
Codeset_Source: this file (landcov.checked)
Entity_Type:
Entity_Type_Label: LANDCOV.DISPLAY
Entity_Type_Definition:
Table for displaying the primary land cover types by matching
primary codes to symbols for arc/info shade colors
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: primary,secondary, other
Attribute_Definition: code for land cover types
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: land cover type codes
Codeset_Source: this file (landcov.display)
Attribute:
Attribute_Label: symbol
Attribute_Definition: code for shade symbol colors
Attribute_Definition_Source: n/a
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: symbol colors
Codeset_Source: this file (landcov.display)

Overview_Description:
Entity_and_Attribute_Overview:
Attributes assigned to each polygon describe primary and secondary
cover types, the relative area of each polygon occupied by these
types, as well as other important land cover types occurring in
the polygon. Wetland type, crown closure of primary forest
types, and disturbance (such as fire or logging) are also recorded
are associated with main polygon table, LANDCOV.PAT. Descriptions
of the codes exist in related files that come with LANDCOV, each
with a LANDCOV prefix (ie, LANDCOV.SCENE, LANDCOV.DISPLAY). These
files can be used with an Arc/Info relate. Some examples follow.

Examples of using the database in arcplot

relate restore landcov.relate

To select all polygons that are spruce-fir:

reselect landcov poly primary//description cn 'Spruce-fir'

To see a list of which polygons were checked and updated

list landcov poly checked//modified

To display the coverage in arcplot by primary type

shadeset colornames

polygonsh landcov primary landcov.display

(a shadeset that has been modified for the Wyoming land cover
types is also available but must be downloaded separate from
the dataset, called lcdisplay.shd)

Entity_and_Attribute_Detail_Citation: n/a

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GIS lab coordinator
Contact_Organization: Wyoming Water Resources Center
Contact_Address:
Address_Type: mailing address
Address: Box 3067 University Station
City: Laramie
State_or_Province: Wyoming
Country: USA
Postal_Code: 82071
Contact_Voice_Telephone: 307-766-2735
Contact_Electronic_Mail_Address: n/a
Distribution_Liability:
The distributor shall not be held liable for improper or
incorrect use of this data, based on the description of
appropriate/inappropriate used described in this metadata
document.
It is strongly recommended that this data is directly acquired
from the distributor described above or from another
U.S.G.S. Biological Resource Division server and not indirectly
through other sources which may have changed the data in some
way.
This data was developed and is meant to be used at the
1:100,000-scale (or smaller scale) for the purpose of assessing
the conservation status of vegetation types over large
geographic regions. The distributor makes no claims as to the
data's suitability for other purposes.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE (Arc/Info export)
Format_Version_Number: 7.0.4
Format_Version_Date: 1995
File_Decompression_Technique:
Export file was created using defaults,
no compression
Transfer_Size: 36.8
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp.sdvc.uwyo.edu or
http://www.src.uwyo.edu/
Access_Instructions:
The data can be accessed online two different way:
by anonymous ftp or by the world wide web.
The anonymous ftp server is ftp.sdvc.uwyo.edu,
and the data is stored in the /pub/clearinghouse/src directory.
The WWW page for gapdata is http://www.sdvc.uwyo.edu/clearinghouse.
Instructions are provided on-line for downloading and
importing the data.
Online_Computer_and_Operating_System:
Both the ftp and WWW server which this data is available
from is a Silicon Graphics Challenge server, running
the IRIX 6.2 UNIX operating system.
Fees:
No fees for downloading the data that is on-line. Some
fees may be required to cover cost of tapes if data is
required on tape media.
Metadata_Reference_Information:
Metadata_Date: 19970108
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Margo Herdendorf
Contact_Address:
Address_Type: mailing address
Address: Box 3067 University Station
City: Laramie
State_or_Province: Wyoming
Postal_Code: 82071
Country: USA
Contact_Voice_Telephone: 307-766-2735
Contact_Electronic_Mail_Address: meh@uwyo.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: 19940608