Soil and Soil Management

Soil Moisture Monitoring, U.S.
Soil Quality Institute - focuses on soil quality resource concerns that have national and multi-state applicability.
Soil Taxonomy, a Basic System of Soil Classification for Making and Interpreting Soil Surveys - covers the basics of soil classification through the world distribution of orders and suborders. Includes links to maps that were originally issued separately.
State of the Land - provides data on land use and change, soil erosion and soil quality, water quality, wetlands, and other issues regarding the conservation and use of natural resources on non-Federal land in the United States.
World Soil Resources - provides support to the Natural Resources Conservation Service's international outreach activities. This site promotes the free exchange of natural resource data for the continued evolution of soils knowledge for sustainable uses and management. Included is a WSR staff directory, online soil education series global outreach, technical reference, professional organizations, and natural resources/agricultural links.