Nitisol
Nitisol, in the
These soils are found in the tropics and subtropics; there are extensive areas of them in the tropical highlands of
dominate their clay mineralogy.Nitisols are technically defined by a significant accumulation of clay (30 percent or more by mass and extending as much as 150 cm [5 feet] below the surface) and by a blocky aggregate structure. Iron oxides and high-water content are believed to play important roles in creating the soil structure. Nitisols are also strongly influenced by biological activity, resulting in a homogenization of the upper portion of the soil profile. These soils are related to the Alfisol and Inceptisol orders of the U.S. Soil Taxonomy. Related FAO soil groups originating in tropical climates and also containing layers with clay accumulations are Acrisols and Lixisols.[3]
See also
- Pedogenesis
- Pedology
- Soil classification
References
- ^ Delvaux, B.; Brahy, V. "Mineral Soils conditioned by a Wet (Sub)Tropical Climate". FAO. Retrieved 14 June 2014.
- ^ "Major Soils of the World. ISRIC Wageningen, The Netherlands, 2001" (PDF). Archived from the original (PDF) on 2016-03-04. Retrieved 2014-06-14.
- ^ "Nitisol | Soil Classification, Clay Content & Nutrient Retention | Britannica". www.britannica.com. Retrieved 2023-09-10.
Further reading
- IUSS Working Group WRB: World Reference Base for Soil Resources, fourth edition. International Union of Soil Sciences, Vienna 2022. ISBN 979-8-9862451-1-9 ([1]).
- W. Zech, P. Schad, G. Hintermaier-Erhard: Soils of the World. Springer, Berlin 2022, Chapter 9.3.2. ISBN 978-3-540-30460-9
External links
- profile photos (with classification) WRB homepage
- profile photos (with classification) IUSS World of Soils
