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Common-use word or phrase used to describe the subject of a data set. Use existing Freebase topics or reference an authoritative source of theme keywords when possible.
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48 FGDC Keyword topics matching:
Filter this Collection| x name | x image | x Keyword thesaurus | x Metadata theme records | x Metadata stratum records | x article |
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| x Land Cover |
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2001 National Land Cover Data metadata |
Land cover is the physical material at the surface of the earth. Land covers include grass, asphalt, trees, bare ground, water, etc. There are two primary methods for capturing information on land cover: field survey and analysis of remotely sensed...
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| 1994 Florida Land Cover metadata | |||||
| 1992 National Land Cover Data metadata | |||||
| 2001 Northeast land cover metadata | |||||
| 1996 Northeast land cover metadata | |||||
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| x Base map | 2001 National Land Cover Data metadata | ||||
| x United States of America |
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The United States of America (commonly referred to as the United States, the U.S., the USA, or America) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America,...
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| x Landsat 7 |
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2001 National Land Cover Data metadata |
Landsat 7, launched on April 15, 1999, is the latest satellite of the Landsat program. Landsat 7's primary goal is to refresh the global archive of satellite photos, providing up-to-date and cloud free images. Although the Landsat Program is managed...
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| x Land use |
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2001 National Land Cover Data metadata |
Land use is the human modification of natural environment or wilderness into built environment such as fields, pastures, and settlements. The major effect of land use on land cover since 1750 has been deforestation of temperate regions. More recent...
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| x Land characterization | 2001 National Land Cover Data metadata | ||||
| x Landsat 5 |
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2001 National Land Cover Data metadata |
Landsat 5 is the fifth satellite of the Landsat program. It was launched on March 1, 1984, with the primary goal of providing a global archive of satellite photos. The Landsat Program is managed by USGS, and data from Landsat 5 is collected and...
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| x Vegetation community |
The categorical concept of a group of co-occuring plant species, often named for the dominant overstory species.
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| x Image analysis |
Image analysis is the extraction of meaningful information from images; mainly from digital images by means of digital image processing techniques. Image analysis tasks can be as simple as reading bar coded tags or as sophisticated as identifying a...
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| x Ovenbird |
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The Ovenbird, Seiurus aurocapillus, is a small songbird of the New World warbler family (Parulidae). This migratory bird breeds in eastern North America and moves south in winter.
It is the subject of the poem "The Oven Bird" by Robert Frost,...
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| x Black-throated Green Warbler |
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The Black-throated Green Warbler, Dendroica virens, is a small songbird of the New World warbler family.
It is 12 cm long and weighs 9 g, and has an olive-green crown, a yellow face with olive markings, a thin pointed bill, white wing bars, an olive...
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| x Nashville Warbler |
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The Nashville Warbler, Vermivora ruficapilla, is a small songbird in the New World warbler family.
They have olive-brown upperparts, a white belly and a yellow throat and breast; they have a white eye ring, no wing bars and a thin pointed bill....
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| x Conservation |
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Conservation is an ethic of resource use, allocation, and protection. Its primary focus is upon maintaining the health of the natural world: its forests, fisheries, habitats, and biological diversity. Secondary focus is on materials conservation and...
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| x Estuary |
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An estuary is a semi-enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and ocean environments and are subject to...
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| x Wetland |
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A wetland is an area of land whose soil is saturated with moisture either permanently or seasonally. Such areas may also be covered partially or completely by shallow pools of water. Wetlands include swamps, marshes, and bogs, among others. The...
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| x Ocean |
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An ocean (from Greek Ωκεανός, Okeanos (Oceanus)) is a large body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (~3.61 X 10 m) is covered by ocean, a continuous body of water that is...
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| x Florida |
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Florida ( /ˈflɒrɪdə/ (help·info)) is a state located in the southeastern region of the United States, bordering Alabama to the northwest and Georgia to the north. It was the 27th state admitted to the United States. Much of the land mass of the...
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| x North Carolina |
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North Carolina ( /ˌnɔrθ kærəˈlaɪnə/ (help·info)) is a state located on the Atlantic Seaboard in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North...
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| x Southern Appalachian Mountains | |||||
| x Fire |
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Fire is the rapid oxidation of a combustible material releasing heat, light, and various reaction products such as carbon dioxide and water. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any...
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| x Gateway National Recreation Area |
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Gateway National Recreation Area is a 26,607 acre (107.67 km²) National Recreation Area in the New York City metropolitan area. Scattered over Brooklyn, Queens, and Staten Island, New York and Monmouth County, New Jersey, it provides recreational...
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| x Bladen County |
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Bladen County is a county located in the U.S. state of North Carolina. As of 2000, the population was 32,278. Its county seat is Elizabethtown.
Bladen County was formed in 1734 as Bladen Precinct of Bath County, from New Hanover Precinct. It was...
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| x Great Smoky Mountains National Park |
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Great Smoky Mountains National Park is a United States National Park that straddles the ridgeline of the Great Smoky Mountains, part of the Blue Ridge Mountains, which are a division of the larger Appalachian Mountain chain. The border between...
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| x Delaware Water Gap National Recreation Area |
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Delaware Water Gap National Recreation Area, administered by the National Park Service, preserves almost 70,000 acres (28,000 ha) of land along the Delaware River's New Jersey and Pennsylvania shores. Middle Delaware National Scenic River is a...
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| x Wenatchee National Forest |
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Wenatchee National Forest is a U.S. National Forest located in Washington. With an area of 1,735,394 acres (2,711.55 sq mi, or 7,022.89 km²), it extends about 220 km along the eastern slopes of the Cascade Range of Washington, USA from Okanogan...
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| x Colville National Forest |
The Colville National Forest is a U.S. National Forest located in northeastern Washington state. It is bordered on the west by the Okanogan National Forest and the Kaniksu National Forest to the east. The forest itself also contains Little Pend...
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| x Forestry |
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Forestry is the art and science of managing forests, tree plantations, and related natural resources. The main goal of forestry is to create and implement systems that allow forests to continue a sustainable continuation of environmental supplies...
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| x Threatened species |
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Threatened species are any species (including animals, plants, fungi, etc.) which are vulnerable to extinction in the near future. World Conservation Union (IUCN) is the foremost authority on threatened species, and treats threatened species not as...
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| x Kentucky |
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The Commonwealth of Kentucky ( /kɨnˈtʌki/ (help·info)) is a state located in the East Central United States of America. As classified by the United States Census Bureau, Kentucky is a Southern state. Kentucky is one of four U.S. states constituted...
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| x Endangered species |
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An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters. Also it could mean that due to deforestation there may be a...
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| x Earth remote sensing |
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2001 National Land Cover Data metadata |
Earth remote sensing is data collection on the environment, geology, climate, and other characteristics of the Earth by means of sensors positioned in the air or in Earth orbit. Sensors used for this type of data gathering include those covering all...
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| x Northeastern United States |
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The Northeastern United States (sometimes called simply the Northeast) is a region of the United States. According to the definition used by the United States Census Bureau, the Northeast region consists of nine states: the New England states of...
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| x Species distribution | Digital Distribution Maps of the Amphibians of the World |
Species distribution is the manner in which a biological taxon is spatially arranged. Species distribution is not to be confused with dispersal, which is the movement of individuals away from their area of origin or from centers of high population...
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| x Amphibian |
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Digital Distribution Maps of the Amphibians of the World |
Amphibians (class Amphibia), such as frogs, toads, salamanders, newts, and caecilians, are ectothermic (or cold-blooded) animals that metamorphose from a juvenile water-breathing form, to an adult air-breathing form. Though amphibians typically have...
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| x Bioclimate | Isobioclimates of the conterminous United States metadata | ||||
| x Conterminous United States |
The 48 contiguous United States.
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| x Land surface form | Land surface forms of the conterminous United States metadata | ||||
| x Topographic moisture potential | Topographic Moisture Potential of the conterminous United States metadata | ||||
| x Surfacial lithology | Surficial Lithology of the conterminous United States metadata | ||||
| x Structural footprint | Structural Footprints of the conterminous United States metadata | ||||
| x Ecosystem |
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Labeled Ecosystems of the conterminous United States metadata |
The term ecosystem refers to the combined physical and biological components of an environment. An ecosystem is generally an area within the natural environment in which physical (abiotic) factors of the environment, such as rocks and soil, function...
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| x Elevation | USGS 30 Meter Resolution, One-Sixtieth Degree National Elevation Dataset for CONUS, Alaska, Hawaii, Puerto Rico, and the U. S. Virgin Islands metadata |
The elevation of a geographic location is its height above a fixed reference point, often the mean sea level. Elevation, or geometric height, is mainly used when referring to points on the Earth's surface, while altitude or geopotential height is...
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| x Hawaii |
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Hawaii ( /həˈwaɪ.iː/ (help·info) or /həˈwaɪʔiː/ in English; Hawaiian: Mokuʻāina o Hawaiʻi) is the newest of the 50 U.S. states, and is the only state made up entirely of islands. It is located on an archipelago in the central Pacific Ocean,...
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| x Puerto Rico |
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Puerto Rico (pronounced /ˌpwɛrtə ˈriːkoʊ/ or /ˌpɔrtə ˈriːkoʊ/), officially the Commonwealth of Puerto Rico (Spanish: "Estado Libre Asociado de Puerto Rico" — literally Associated Free State of Puerto Rico), is a self-governing unincorporated...
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| x Continental United States |
The states of the United States occurring on the North American land mass, including Alaska but not including Hawaii or U.S. territories such as Puerto Rico and the U.S. Virgin Islands.
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| x Alaska |
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Alaska ( /əˈlæskə/ (help·info)) is the largest state of the United States of America by area; it is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to...
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| x United States Virgin Islands |
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The United States Virgin Islands is a group of islands in the Caribbean that are an insular area of the United States. The islands are geographically part of the Virgin Islands archipelago and are located in the Leeward Islands of the Lesser...
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| x Soil classification |
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Soil classification deals with the systematic categorization of soils based on distinguishing characteristics as well as criteria that dictate choices in use.
Soil classification is a dynamic subject, from the structure of the system itself, to the...
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