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The US Geological Survey Chesapeake Bay Watershed Land Cover Data Series, 2011 edition, (CBLCD-e11) consists of Level I Land Cover data for the years 1984, 1992, 2001, 2006 and 2011. It consists of a series of five 8-bit unsigned integer raster data files of 30 meter spatial resolution in Albers Conic Equal Area projection, NAD83 datum. The 1984 – 2006 data layers were created by aggregating most Level II Anderson classes of the USGS CBLCD Land Cover Data Series released in 2010 (Irani and Claggett, 2010).
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This raster dataset depicts percent canopy cover derived from 1-m conifer classifications when aggregated to 30-m cells. Conifer features were classified from 2010, 2012, and 2013 NAIP Digital Ortho Quarter Quads (DOQQ) using the Feature Analyst 5.0 extension for ArcGIS 10.1. Tiles were organized and grouped by Nevada Department of Wildlife Population Management Unit (PMU) locations, plus a 10 km area beyond the PMU extent. Analysts visually identified conifers in the imagery using false color infrared settings and digitized multiple trees per tile as training locations for classification. After performing hierarchical learning and clutter removal with Feature Analyst to remove non-conifer features on output shapefiles,...
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The national dataset was clipped to the WLCI envelope by USGS staff. No other processing was performed on the dataset. This map layer is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.S. Virgin Islands. Four levels of detail are included to show a hierarchy of ecosystems. The largest ecosystems are domains, which are groups of related climates and which are differentiated based on precipitation and temperature. Divisions represent the climates within domains and are differentiated based on precipitation levels and patterns as well as temperature. Divisions are subdivided into provinces, which are differentiated based on vegetation or other...
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Four regional land cover datasets, of varying spatial and classification resolution, were used as the source data for the AKNHP land cover mosaic. These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. The BLM should...
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The NHDPlus Version 1.0 is an integrated suite of application-ready geospatial data sets that incorporate many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,000-scale NHD), improved networking, naming, and "value-added attributes" (VAA's). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first broadly applied in New England, and thus dubbed "The New-England Method". This technique involves "burning-in" the 1:100,000-scale NHD and when available building "walls" using the national Watershed Boundary Dataset (WBD). The resulting modified...
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The circumboreal vegetation mapping (CBVM) project is an international collaboration among vegetation scientists to create a new vegetation map of the boreal region at a 1:7.5 million scale with a common legend and mapping protocol (Talbot and Meades 2011). The map is intended to portray potential natural vegetation, or the vegetation that would exist in the absence of human or natural disturbance, rather than existing vegetation that is commonly generated at larger scales. This report and map contributes to the CBVM effort by developing maps of bioclimatic zones, geographic sectors with similar floristic variability, and vegetation in boreal Alaska, Yukon, northwestern British Columbia, and a mountainous portion...
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Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and...
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Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and...
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The geographic information system (GIS) format spatial data set of vegetation for Apostle Islands National Lakeshore (APIS) was created for the National Park Service (NPS) Vegetation Inventory Program (VIP). The APIS covers an area of approximately 28,972 ha (71,591 acres). The map classification scheme used to create the vegetation data set is designed to represent local vegetation types at the finest level possible using the National Vegetation Classification (NVC) Standard (Vr 2). Physiognomic information was also recorded, including height (woody vegetation), canopy density, and coverage patterns. The vegetation data set was developed by interpreting aerial photographs collected in 2004 and extensive field surveys....


map background search result map search result map Baileys Ecoregions, restricted to original WLCI boundary (effective 2007-May 2009) Apostle Islands National Lakeshore Vegetation Mapping Project - Spatial Vegetation Data Chesapeake Bay Watershed 2011 Edition Land Cover Data Release Circumboreal Vegetation Map for Northwest Canada and Alaska USGS Land Cover - Woodland for Mississippi 20160519 State or Territory Shapefile Shrub Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Bare Ground Percent  - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Percent canopy cover of conifers within Nevada and northeastern California sage-grouse habitat (2017) USGS Land Cover - Woodland for Missouri 20180127 State or Territory Shapefile USGS Land Cover - Woodland for District of Columbia 20180810 State or Territory Shapefile USGS National Landcover - Woodland in Illinois 20191007 State or Territory Shapefile USGS National Landcover - Woodland in Minnesota 20190813 State or Territory FileGDB 10.1 USGS National Landcover - Woodland in New York 20190924 State or Territory FileGDB 10.1 USGS National Landcover - Woodland in North Dakota 20200716 State or Territory Shapefile USGS National Landcover - Woodland in Ohio 20191108 State or Territory FileGDB 10.1 USGS National Landcover - Woodland in Oklahoma 20190610 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for California 20181111 State or Territory FileGDB 10.1 BLM REA MBR 2010 National Hydrography Dataset Plus - NHDPlus Pt BLM REA SNK 2010 TES Ecosystems ANKHP Land Cover Mosaic FigB2 USGS National Landcover - Woodland in Texas 20190613 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for District of Columbia 20180810 State or Territory Shapefile Apostle Islands National Lakeshore Vegetation Mapping Project - Spatial Vegetation Data USGS National Landcover - Woodland in Ohio 20191108 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Mississippi 20160519 State or Territory Shapefile BLM REA MBR 2010 National Hydrography Dataset Plus - NHDPlus Pt USGS National Landcover - Woodland in North Dakota 20200716 State or Territory Shapefile Baileys Ecoregions, restricted to original WLCI boundary (effective 2007-May 2009) USGS National Landcover - Woodland in Illinois 20191007 State or Territory Shapefile USGS National Landcover - Woodland in Oklahoma 20190610 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Missouri 20180127 State or Territory Shapefile Percent canopy cover of conifers within Nevada and northeastern California sage-grouse habitat (2017) USGS National Landcover - Woodland in New York 20190924 State or Territory FileGDB 10.1 USGS National Landcover - Woodland in Minnesota 20190813 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for California 20181111 State or Territory FileGDB 10.1 Chesapeake Bay Watershed 2011 Edition Land Cover Data Release USGS National Landcover - Woodland in Texas 20190613 State or Territory FileGDB 10.1 Shrub Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Bare Ground Percent  - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area BLM REA SNK 2010 TES Ecosystems ANKHP Land Cover Mosaic FigB2 Circumboreal Vegetation Map for Northwest Canada and Alaska