NDHUB.LANDCLASS_GAP_2010

SDE Raster Dataset

Tags
vegetation, Northwestern United States, Southeastern United States, Southwestern United States, Northeastern United States, Central United States, Continental United States, land cover

Description

This dataset combines the work of several different projects to create a seamless data set for the contiguous United States. Data from four regional Gap Analysis Projects and the LANDFIRE project were combined to make this dataset. In the Northwestern United States (Idaho, Oregon, Montana, Washington and Wyoming) data in this map came from the Northwest Gap Analysis Project. In the Southwestern United States (Colorado, Arizona, Nevada, New Mexico, and Utah) data used in this map came from the Southwest Gap Analysis Project. The data for Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Mississippi, Tennessee, and Virginia came from the Southeast Gap Analysis Project and the California data was generated by the updated California Gap land cover project. In areas of the county (central U.S., Northeast) that have not yet been covered by a regional Gap Analysis Project, data from the Landfire project was used. In 2009 Landfire data was combined by the Landscope project into one uniform coverage. This compiled data was the data pulled into this project. Similarities in the methods used by these projects made possible the combining of the data they derived into one seamless coverage. They all used multi-season satellite imagery (Landsat ETM+) from 1999-2001 in conjunction with digital elevation model (DEM) derived datasets (e.g. elevation, landform) to model natural and semi-natural vegetation. Vegetation classes were drawn from NatureServe's Ecological System Classification (Comer et al. 2003). Additionally, all of the projects included land use classes that were employed to describe areas where natural vegetation has been altered. In many areas of the country these classes were derived from the National Land Cover Dataset (NLCD). For the majority of classes and, in most areas of the country, a decision tree classifier was used to discriminate ecological system types. In some areas of the country, more manual techniques were used to discriminate small patch systems and systems not distinguishable through topography. Online references Northwest Gap Analysis Project http://gap.uidaho.edu/index.php/gap-home/Northwest-GAP Southwest Gap Analysis Project- http://earth.gis.usu.edu/swgap/ Southeast Gap Analysis Project- http://www.basic.ncsu.edu/segap/ California Gap land cover project http://www.gap.uidaho.edu/Portal/California/CAReGAP.html LANDFIRE- http://www.landfire.gov/ Landscope- http://www.landscope.org/ NatureServe- http://natureserve.org/ National Land Cover Dataset- http://www.epa.gov/mrlc/nlcd-2001.html

Summary

The digital land cover 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.

Credits

Use limitations

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

Scale Range

Metadata 

Topics and Keywords 

Place keywords  Northwestern United States, Southeastern United States, Southwestern United States, Northeastern United States, Central United States, Continental United States

Theme keywords  vegetation, land cover

Citation 

Edition Version 1


Presentation formats* digital table


Citation Contacts 

Responsible party
Organization's name Gap Analysis Program
Contact's role  originator


Resource Details 

Dataset languages  English (UNITED STATES)


Status  under development
Spatial representation type* grid


*Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959



Extents 

Extent
Description
ground condition

Temporal extent
Beginning date 1999-01-01
Ending date 2001-01-01

Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -104.429300
*East longitude -96.553134
*North latitude 49.228574
*South latitude 45.699192
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude -623900.319533
*East longitude -42950.319533
*South latitude 2549786.968303
*North latitude 2913446.968303
*Extent contains the resource Yes

Resource Points of Contact 

Point of contact
Individual's name Anne Davidson
Organization's name National Gap Analysis Program
Contact's position Spatial Ecoologist
Contact's role  point of contact


Contact information
Phone
Voice 208-885-3720

Address
Type both
Delivery point 530 S. Asbury Suite 1
City Moscow
Administrative area Idaho
Postal code 99163
Country U. S.
e-mail addressadavidson@uidaho.edu

Hours of service
8 a.m - 5 p.m. PST



Resource Maintenance 

Resource maintenance
Update frequency  irregular


Resource Constraints 

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

Spatial Reference 

ArcGIS coordinate system
*Type Projected
*Geographic coordinate reference GCS_North_American_1983
*Projection NAD_1983_Albers
*Coordinate reference details
Projected coordinate system
X origin -16901100
Y origin -6972200
XY scale 266467840.99085236
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 2
M tolerance 2
High precision true
Well-known text PROJCS["NAD_1983_Albers", GEOGCS["GCS_North_American_1983", DATUM["D_North_American_1983", SPHEROID["GRS_1980", 6378137.0, 298.257222101]], PRIMEM["Greenwich", 0.0], UNIT["Degree", 0.0174532925199433]], PROJECTION["Albers"], PARAMETER["False_Easting", 0.0], PARAMETER["False_Northing", 0.0], PARAMETER["Central_Meridian", -96.0], PARAMETER["Standard_Parallel_1", 29.5], PARAMETER["Standard_Parallel_2", 45.5], PARAMETER["Latitude_Of_Origin", 23.0], UNIT["Meter", 1.0]]

Reference system identifier
*Value 0


Data Quality 

Scope of quality information
Resource level  dataset




Data quality report - Conceptual consistency
Measure description
Not applicable for raster data





Data quality report - Completeness omission
Measure description
All cells within the continental United States heve been assigned an Ecological System or land use Value and description. Work is ongoing to improve country wide consistancy in the class assignment process.





Data quality report - Quantitative attribute accuracy
Measure description
Accuracy assessments have been conducted for part of the Northwestern United States and the Southwestern United States





Lineage 

Source data
Source citation
Title Landsat 7, ETM+ Imagery


Presentation formats  digital map
FGDC geospatial presentation format  raster digital data


Other citation details
Landsat 7 ETM+ Imagery provided for Spring, Summer and Fall dates between 1999 and 2001



Responsible party
Organization's name United States Geological Survey, EROS Data Center, Multi-Resolution Land Characteristics Consortium
Contact's role  originator


Resource location online



Extent of the source data
Description
ground condition

Temporal extent
Date and time 1999-01-01



Source data
Source citation
Title 30 Meter Digital Elevation Model
Publication date 1999-01-01


Presentation formats  digital map
FGDC geospatial presentation format  raster digital data


Responsible party
Organization's name United States Geological Survey, EROS Data Center, National Elevation Dataset
Contact's role  originator


Resource location online
Location <http://ned.usgs.gov/>





Source data


Distribution 

Distributor
Contact information
Individual's name Anne Davidson
Organization's name National Gap Analysis Program
Contact's position Spatial Ecologist
Contact's role  distributor


Contact information
Phone
Voice 208 885-3720

Address
e-mail addressadavidson@uidaho.edu

Hours of service
8-5 PST





Distribution format
*Name SDE Raster Dataset


Fields 

Details for object NDHUB.SDE_VAT_69 
*Type Table
*Row count 53


Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 10
*Scale 0
*Field description
Internal feature number.

*Description source
ESRI

*Description of values
Sequential unique whole numbers that are automatically generated.





Field Value
 
*Alias VALUE
*Data type Integer
*Width 4
*Precision 10
*Scale 0
Field description
Code used to identify Ecological System or land use class. Same as Level 3 class



Field Count
 
*Alias COUNT
*Data type Integer
*Width 4
*Precision 10
*Scale 0
Field description
Number of 30 m  x 30 m pixels per class



Field VALUE1
 
*Alias VALUE1
*Data type SmallInteger
*Width 2
*Precision 5
*Scale 0




Field VALUE2
 
*Alias VALUE2
*Data type Integer
*Width 4
*Precision 10
*Scale 0




Field VALUE3
 
*Alias VALUE3
*Data type Integer
*Width 4
*Precision 10
*Scale 0




Field CLASS_NAME
 
*Alias CLASS_NAME
*Data type String
*Width 100
*Precision 0
*Scale 0




Field CLASS_NAME1
 
*Alias CLASS_NAME1
*Data type String
*Width 100
*Precision 0
*Scale 0




Field CLASS_NAME2
 
*Alias CLASS_NAME2
*Data type String
*Width 100
*Precision 0
*Scale 0




Field CLASS_NAME3
 
*Alias CLASS_NAME3
*Data type String
*Width 100
*Precision 0
*Scale 0






Metadata Details 

Metadata language English (UNITED STATES)
Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata  dataset
Scope name* dataset


*Last update 2016-01-19


ArcGIS metadata properties
Metadata format ArcGIS 1.0


Created in ArcGIS for the item 2010-06-24 10:48:07
Last modified in ArcGIS for the item 2016-01-19 13:31:39


Automatic updates
Have been performed Yes
Last update 2016-01-19 13:31:39


Metadata Contacts 

Metadata contact
Individual's name Anne Davidson
Organization's name National Gap Analysis Program
Contact's role  point of contact


Contact information
Phone
Voice 208 885-3720

Address
Type both
Delivery point 530 S. Asbury Suite 1
City Moscow
Administrative area Idaho
Postal code 83843
e-mail addressadavidson@uidaho.edu