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(7 classifications) (14 resources)


Canada (2)
Classification. (5)
Databases (3)
Identification. (7)
Maps (1)
Pictorial works (1)
United States (9)

View Resource Soil Taxonomy

From Alfisols to Vertisols, this substantial resource (.pdf format only) from the US Department of Agriculture's Natural Resources Conservation Service provides an in-depth treatment of soil taxonomy around the world. Published in 1999 (Second Edition), this Soil Taxonomy text includes 23 chapters, covering the basics of soil classification through the world distribution of orders and suborders....
View Resource International Soil Reference and Information Centre

The International Soil Reference and Information Centre (ISRIC), which is associated with the Centre for Development and Environment, University of Berne, Switzerland, aims to "provide a better understanding of soils and to promote sustainable use of the land." The ISRIC Web site gives visitors several areas to explore, but of special note are the reports and publications link within the...
View Resource Frozen Soil

This Topic in Depth explores the world of frozen soil, including permafrost and tundra. The first site is provided by the Missouri Botanical Gardens Web site, entitled Tundra (1). This kids focused site does a good job of clearly explaining what tundra is, where it's located, and what types of plants and animals are found within tundra areas, as well as offering a photo gallery. The second site,...
View Resource Soils: Photo Gallery

An interesting page from the US Department of Agriculture's Natural Resources Conservation Service (NRCS) Web site is entitled Soils: Photo Gallery. Visitors can choose from State Soils, Soil Images and Landscapes, Principles and Techniques, and the NRCS Photo Gallery. The interesting state soils link contains individual pages that present descriptions and photos of that state's official soil. For...
View Resource Soil Data

The International Soil Reference and Information Centre (ISRIC) is described as a foundation for documentation, training and research on soils of the world, and serves the whole scientific community by assembling, scrutinizing, organizing and disseminating data and information. The ISRIC Web site contains some helpful online resources on the Soil Data page. These include international soil profile...
View Resource Compendium of On-Line Soil Survey Information

D.G. Rossiter from the International Institute for Geo-Information Science and Earth Observation has compiled the Compendium of On-Line Soil Survey Information. The Soil Survey Institutes & Activities page contains information about and links to soil survey institutes from around the world and the digital soil geographic databases they offer. Example institutes include Scotland's Macaulay Land Use...
View Resource Soil pH and Fertilizers

This Web site by the Mississippi State University Extension Service discusses why fertilizers are added to soils. The Web site begins by introducing the concept of the pH of the soil and how nutrients are affected by this pH level. Students can then learn about the pH logarithmic scale and about the factors that affect soil pH. At the end of the site, users will find a clear and concise table...
View Resource University of Florida: Soil Texture

This University of Florida website educates the public about soil texture, which is the distribution of sizes of mineral particles found in soils. After learning the basics about soil separates, students and educators can learn about the USDA textural triangle and the characteristics of the twelve textural classes. Researchers can discover how to determine the correct soil texture in the field....
View Resource University of Idaho: Pedology Laboratory

This website discusses the University of Idaho's pedology laboratory's work primarily focused on the environmental factors and processes that form soils and influence their use and management. Researchers and students can learn about the volcanic ash-influenced soils in the Pacific Northwest, the hydrology of Northern Idaho, and the ability of soils in the Palouse Basin to accommodate ground water...
View Resource Natural Resources Conservation Service: Soil Education

The Natural Resources Conservation Service provides an array of materials to assist people with their understanding of soils. Through an online presentation, users can learn ten key points about soil characteristics and their importance. Teachers and students can find many fun activities including soil erosion and particle size demonstrations and soil songs. The website provides a great...
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