U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2
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, Washingto...
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USGS Science Data Catalog
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Online Access: | https://search.dataone.org/view/083f5422-3fb4-407c-b74a-a649e70a4fa9 |
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dataone:083f5422-3fb4-407c-b74a-a649e70a4fa9 |
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openpolar |
institution |
Open Polar |
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USGS Science Data Catalog (via DataONE) |
op_collection_id |
dataone:urn:node:USGS_SDC |
language |
unknown |
topic |
land cover vegetation ecology landcover wildlife habitat biota environment Continental United States Southeastern United States Northwestern United States Central United States Southwestern United States Northeastern United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Landscape Conservation Cooperatives Appalachian Desert Eastern Tallgrass Prairie and Big Rivers Great Basin Great Northern Great Plains Gulf Coast Prairie Gulf Coast Plains and Ozarks North Atlantic Southern Rockies Upper Midwest and Great Lakes Aleutian and Berind Sea Islands Arctic, Northwestern Interior Forest Western Alaska Pacific Islands |
spellingShingle |
land cover vegetation ecology landcover wildlife habitat biota environment Continental United States Southeastern United States Northwestern United States Central United States Southwestern United States Northeastern United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Landscape Conservation Cooperatives Appalachian Desert Eastern Tallgrass Prairie and Big Rivers Great Basin Great Northern Great Plains Gulf Coast Prairie Gulf Coast Plains and Ozarks North Atlantic Southern Rockies Upper Midwest and Great Lakes Aleutian and Berind Sea Islands Arctic, Northwestern Interior Forest Western Alaska Pacific Islands U.S. Geological Survey Gap Analysis Program, Anne Davidson, Spatial Ecologist U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2 |
topic_facet |
land cover vegetation ecology landcover wildlife habitat biota environment Continental United States Southeastern United States Northwestern United States Central United States Southwestern United States Northeastern United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Landscape Conservation Cooperatives Appalachian Desert Eastern Tallgrass Prairie and Big Rivers Great Basin Great Northern Great Plains Gulf Coast Prairie Gulf Coast Plains and Ozarks North Atlantic Southern Rockies Upper Midwest and Great Lakes Aleutian and Berind Sea Islands Arctic, Northwestern Interior Forest Western Alaska Pacific Islands |
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. The Hawaii Gap Analysis project provided the data for Hawaii. In areas of the county (central U.S., Northeast, Alaska) that have not yet been covered by a regional Gap Analysis Project, data from the Landfire project was used. 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) or classes developed by the Hawaii Gap project. 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. The data contains multiple levels of thematic detail. At the most detailed level natural vegetation is represented by NatureServe's Ecological System classification (or in Hawaii the Hawaii GAP classification). These most detailed classifications have been crosswalked to the five highest levels of the National Vegetation Classification (NVC), Class, Subclass, Formation, Division and Macrogroup. This crosswalk allows users to display and analyze the data at different levels of thematic resolution. Developed areas, or areas dominated by introduced species, timber harvest, or water are represented by other classes, collectively refered to as land use classes; these land use classes occur at each of the thematic levels. Raster data in both ArcGIS Grid and ERDAS Imagine format is available for download at http://gis1.usgs.gov/csas/gap/viewer/land_cover/Map.aspx Six layer files are included in the download packages to assist the user in displaying the data at each of the Thematic levels in ArcGIS. In adition to the raster datasets the data is available in Web Mapping Services (WMS) format for each of the six NVC classification levels (Class, Subclass, Formation, Division, Macrogroup, Ecological System) at the following links. http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Class_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Subclass_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Formation_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Division_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Macrogroup_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_Ecological_Systems_Landuse/MapServer |
format |
Dataset |
author |
U.S. Geological Survey Gap Analysis Program, Anne Davidson, Spatial Ecologist |
author_facet |
U.S. Geological Survey Gap Analysis Program, Anne Davidson, Spatial Ecologist |
author_sort |
U.S. Geological Survey Gap Analysis Program, Anne Davidson, Spatial Ecologist |
title |
U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2 |
title_short |
U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2 |
title_full |
U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2 |
title_fullStr |
U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2 |
title_full_unstemmed |
U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2 |
title_sort |
u.s. geological survey gap analysis program- land cover data v2.2 |
publisher |
USGS Science Data Catalog |
publishDate |
|
url |
https://search.dataone.org/view/083f5422-3fb4-407c-b74a-a649e70a4fa9 |
op_coverage |
United States ENVELOPE(-128.44644,-64.761475,52.496414,22.670195) BEGINDATE: 1999-01-01T00:00:00Z ENDDATE: 2001-01-01T00:00:00Z |
long_lat |
ENVELOPE(-128.44644,-64.761475,52.496414,22.670195) |
geographic |
Alabama Arctic Pacific |
geographic_facet |
Alabama Arctic Pacific |
genre |
Arctic North Atlantic Alaska |
genre_facet |
Arctic North Atlantic Alaska |
_version_ |
1800870176083673088 |
spelling |
dataone:083f5422-3fb4-407c-b74a-a649e70a4fa9 2024-06-03T18:46:43+00:00 U.S. Geological Survey Gap Analysis Program- Land Cover Data v2.2 U.S. Geological Survey Gap Analysis Program, Anne Davidson, Spatial Ecologist United States ENVELOPE(-128.44644,-64.761475,52.496414,22.670195) BEGINDATE: 1999-01-01T00:00:00Z ENDDATE: 2001-01-01T00:00:00Z 2016-10-29T04:17:00Z https://search.dataone.org/view/083f5422-3fb4-407c-b74a-a649e70a4fa9 unknown USGS Science Data Catalog land cover vegetation ecology landcover wildlife habitat biota environment Continental United States Southeastern United States Northwestern United States Central United States Southwestern United States Northeastern United States Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Landscape Conservation Cooperatives Appalachian Desert Eastern Tallgrass Prairie and Big Rivers Great Basin Great Northern Great Plains Gulf Coast Prairie Gulf Coast Plains and Ozarks North Atlantic Southern Rockies Upper Midwest and Great Lakes Aleutian and Berind Sea Islands Arctic, Northwestern Interior Forest Western Alaska Pacific Islands Dataset dataone:urn:node:USGS_SDC 2024-06-03T18:09:01Z 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. The Hawaii Gap Analysis project provided the data for Hawaii. In areas of the county (central U.S., Northeast, Alaska) that have not yet been covered by a regional Gap Analysis Project, data from the Landfire project was used. 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) or classes developed by the Hawaii Gap project. 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. The data contains multiple levels of thematic detail. At the most detailed level natural vegetation is represented by NatureServe's Ecological System classification (or in Hawaii the Hawaii GAP classification). These most detailed classifications have been crosswalked to the five highest levels of the National Vegetation Classification (NVC), Class, Subclass, Formation, Division and Macrogroup. This crosswalk allows users to display and analyze the data at different levels of thematic resolution. Developed areas, or areas dominated by introduced species, timber harvest, or water are represented by other classes, collectively refered to as land use classes; these land use classes occur at each of the thematic levels. Raster data in both ArcGIS Grid and ERDAS Imagine format is available for download at http://gis1.usgs.gov/csas/gap/viewer/land_cover/Map.aspx Six layer files are included in the download packages to assist the user in displaying the data at each of the Thematic levels in ArcGIS. In adition to the raster datasets the data is available in Web Mapping Services (WMS) format for each of the six NVC classification levels (Class, Subclass, Formation, Division, Macrogroup, Ecological System) at the following links. http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Class_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Subclass_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Formation_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Division_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_NVC_Macrogroup_Landuse/MapServer http://gis1.usgs.gov/arcgis/rest/services/gap/GAP_Land_Cover_Ecological_Systems_Landuse/MapServer Dataset Arctic North Atlantic Alaska USGS Science Data Catalog (via DataONE) Alabama Arctic Pacific ENVELOPE(-128.44644,-64.761475,52.496414,22.670195) |