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This is a list of U.S. state soils. A state soil is a soil that has special significance to a particular state. Each state in the United States has selected a state soil, twenty of which have been legislatively established. These official state soils share the same level of distinction as official state flowers and birds.
Soils are the product of climate, organisms and topography, acting on parent (geologic) material over time. Thus the great diversity of geologic materials, geomorphic processes, climatic conditions, biotic assemblages and land surface ages in the United States is responsible for the presence of an enormous variety of mineral and organic soils.
Soil in the United States; List of state soil science associations; USDA soil taxonomy * List of U.S. state soils; 0–9. 1938 USDA soil taxonomy; A. Antigo (soil) B ...
Information about All States from UCB Libraries GovPubs; State Resource Guides, from the Library of Congress; Tables with areas, populations, densities and more (in order of population) Tables with areas, populations, densities and more (alphabetical) State and Territorial Governments on USA.gov; StateMaster – statistical database for U.S. states
Early soil scientists. This is a comprehensive list of state-level professional soil science associations in the United States. There is a US Consortium of Soil Science Associations that strives to increase work, communication and corporation between these associations and other soil scientist associations.lun
About 1,000 soil subgroups are defined in the United States. [6] A soil family category is a group of soils within a subgroup and describes the physical and chemical properties which affect the response of soil to agricultural management and engineering applications. The principal characteristics used to differentiate soil families include ...
Other engineering soil classification systems in the United States include the AASHTO Soil Classification System, which classifies soils and aggregates relative to their suitability for pavement construction, and the Modified Burmister system, which works similarly to the USCS but includes more coding for various soil properties. [3]
In the United States, the EPA and the United States Geological Survey (USGS) are the principal federal agencies working with the CEC to define and map ecoregions. Ecoregions may be identified by similarities in geology , physiography , vegetation , climate , soils , land use , wildlife distributions, and hydrology .