Search results
Understanding soil morphology and horizon nomenclature is essential for effectively describing, classifying, and communicating information about soils. By following the steps outlined in this lecture and applying the master horizon and suffix designations, soil scientists and other professionals can create standardized, informative soil profile ...
Jan 1, 2020 · They found that the topsoil (A horizon) and deep soil (C horizon) were uniform due to the cultivation and groundwater movement, whereas the subsoil (B horizon) was a transitional horizon for pH and had relatively high variation.
- A.E. Hartemink, Y. Zhang, J.G. Bockheim, N. Curi, S.H.G. Silva, J. Grauer-Gray, David J. Lowe, P. Kr...
- 2020
The layers defined are R, rock; W, water; and IIC or other nonconforming, unconsolidated mineral layers, IIIC, etc. below the control section that are unaffected by soil-forming processes. Theoretically a IIC affected by soil-forming processes is a horizon; for example a IICca is a horizon.
We summarize what is known about soil horizon variation, quantify the variation in different horizons, and investigate whether the variation increases or decreases with depth. The variation within horizons differs among soils, and the magnitude of the variation varies for different soil properties.
The horizon nomenclature and morphology of these soils are different because of the different processes acting on the parent material. For example, rather than A, B, and C horizons that are standard for mineral soils, the organic soils consist of O horizons.
Pedon – smallest three-dimensional unit that displays the full range of properties characteristic of a given soil. (1-10 m2 of area) - the fundamental unit of soil classification. Polypedon – group of closely associated pedons in the field.
People also ask
Why are Horizon nomenclature and morphology different?
Why are organic soils different from Horizon nomenclature and morphology?
What is a horizon nomenclature?
How does soil horizon variation vary between soils?
What is a subsurface horizon in soil taxonomy?
What is an O horizon in soil taxonomy?
Soil horizon 'names' are based on an "A,B,C" system, where horizon symbols denote important processes or properties that are suspected for that layer. The key to horizon naming lies in comparing the properties of that horizon to the parent material.
