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www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/edu/?cid=nrcs142p2_054278

The distribution of these soil orders in the United States corresponds with the general patterns of the soil forming factors across the country. A map of soil orders is useful in understanding broad areas of soils. Detailed soil maps found in soil survey reports, however, should be used for local decision making.

earthonlinemedia.com/ebooks/tpe_3e/soil_systems/soil__development_soil_forming_factors...

Soil Systems. Factors Affecting Soil Development. Soil research has shown that soil profiles are influenced by five separate, yet interacting, factors: parent material, climate, topography, organisms, and time. Soil scientists call these the factors of soil formation. These factors give soil profiles their distinctive character.

www.eartheclipse.com/environment/process-and-factors-of-soil-formation.html

What is the Process of Soil Formation? ... Factors That Affect Soil Formation. Time; Soil formation takes several hundreds to thousands of years to undergo significant changes and their eventual formation. Most of the soils of the world have taken more than 10,000 years to form the current state of soils. What’s more, is that the soils within ...

www.soilandhealth.org/wp-content/uploads/01aglibrary/010159.Jenny.pdf

field of soil science and related agricultural and scientific phases. Among the subjects prescribed, the four-unit course on "Development and Morphology of Soils" includes a study of soil-forming factors and processes of soil genesis. The present monograph is an extension of the first part of the course. The book must be classified as an

forces.si.edu/soils/02_03_00.html

These “hidden” horizons are the descending layers within a soil. Horizons are the visible evidence of soil-forming factors at work— climate, organisms, relief (topography), parent materials, and time. Scientists group soils based on the arrangement and properties of horizons.

earthhow.com/soil-formation-factors

For humans, soil formation is vital for food production and plant growth. Weathering is the long process that breaks rock down into soils. Without it, soil wouldn’t exist. On top of that, climate, relief, organisms, parent material and time are all factors of soil formation. So how do soils form? What are the soil formation factors?

www.eschooltoday.com/soils/factors-that-affect-soil-formation.html

Factors affecting soil formation Soils form from the interplay of five main factors namely Parent material, Time, Climate, Relief and Organisms. Parent material: This refers to the mineral material or organic material from which the soil is formed.

nesoil.com/plymouth/formation.html

The interaction of the five soil-forming factors; time, climate, parent material, topography, and plant and animal life, result in the development of a soil profile. A soil profile is a vertical section of the soil beginning at the surface and extending down into the unconsolidated underlying material to a depth of 60 inches or more.

passel.unl.edu/pages/informationmodule.php?idinformationmodule=1130447021&topicorder=3

Soil scientists identify climate and organisms as “active” factors of soil formation because their influence over soil development can be directly observed. For example, rain, heat, cold, wind, microorganisms (algae, fungi), earthworms, and burrowing animals can be directly observed influencing soil development.

en.wikipedia.org/wiki/Pedogenesis

Pedogenesis (from the Greek pedo-, or pedon, meaning 'soil, earth,' and genesis, meaning 'origin, birth') (also termed soil development, soil evolution, soil formation, and soil genesis) is the process of soil formation as regulated by the effects of place, environment, and history. Biogeochemical processes act to both create and destroy order within soils.