Theme codes and keywords from the ISO metadata standard



•    Administrative and political boundaries
Refers to legal land descriptions.

•    Agriculture and farming
Refers to the rearing of animals or cultivation of plants. For example, resources describing irrigation, aquaculture, herding, and pests and diseases affecting crops and livestock.

•    Atmosphere, climatology, and meteorology
Refers to atmospheric processes and phenomena. For example, resources describing cloud cover, weather, atmospheric conditions, climate change, and precipitation.

•    Biologic and ecologic
Refers to naturally occurring flora and fauna. For example, resources describing wildlife, biological sciences, ecology, wilderness, sea life, wetlands, and habitats.

•    Business and economic
Refers to economic activities or employment. For example, resources describing labor, revenue, commerce, industry, tourism and ecotourism, forestry, fisheries, commercial or subsistence hunting, and exploration and exploitation of resources such as minerals, oil, and gas.

•    Cadastral and land planning
Refers to land use. For example, resources describing zoning maps, cadastral surveys, and land ownership.

•    Cultural, society, and demographic
Refers to the characteristics of societies and cultures. For example, resources describing natural settlements, anthropology, archaeology, education, traditional beliefs, manners and customs, demographic data, crime and justice, recreational areas and activities, social impact assessments, and census information.

•    Elevation and derived products
Refers to height above or below sea level. For example, resources describing altitude, bathymetry, digital elevation models, slope, and products derived from this information.
 
•    Environment and conservation
Refers to environmental resources, protection, and conservation. For example, resources describing pollution, waste storage and treatment, environmental impact assessment, environmental risk, and nature reserves.

•    Facilities and structures
Refers to man-made construction. For example, resources describing buildings, museums, churches, factories, housing, monuments, and towers.

•    Geological and geophysical
Refers to the earth sciences. For example, resources describing geophysical features and processes, minerals, the composition, structure and origin of the earth's rocks, earthquakes, volcanic activity, landslides, gravity information, soils, permafrost, hydrogeology, and erosion.
 
•    Human health and disease
Refers to health services, human ecology, and safety. For example, resources describing human disease and illness, factors affecting health, hygiene, mental and physical health, substance abuse, and health services.

•    Imagery, base maps, and land cover
Refers to base maps. For example, resources describing land cover, topographic maps, and classified and unclassified images.

•    Inland water resources
Refers to inland water features, drainage systems, and their characteristics. For example, resources describing rivers and glaciers, salt lakes, water use plans, dams, currents, floods, water quality, and hydrographic charts.

•    Locations and geodetic networks
Refers to positional information and services. For example, resources describing addresses, geodetic networks, postal zones and services, control points, and place names.

•    Military and intelligence
Refers to military bases, structures, and activities. For example, resources describing barracks, training grounds, military transportation, and information collection.

•    Oceans and estuaries
Refers to the features and characteristics of salt water bodies excluding inland waters. For example, resources describing tides, tidal waves, coastal information, and reefs.

•    Transportation networks
Refers to the means and aids for conveying people and goods. For example, resources describing roads, airports and airstrips, shipping routes, tunnels, nautical charts, vehicle or vessel location, aeronautical charts, and railways.

•    Utility and communication networks
Refers to energy, water and waste systems, and communications infrastructure and services. For example, resources describing hydroelectricity, geothermal, solar, and nuclear sources of energy, water purification and distribution, sewage collection and disposal, electricity and gas distribution, data communication, telecommunication, radio, and communication networks.