Inceptisols
Term · Environment · MLC-T-ENV-013991
The central concept of Inceptisols is that of soils that are of cool to very warm, humid and subhumid regions and that have a cambic horizon and an ochric epipedon. The order of Inceptisols includes a wide variety of soils. In some areas Inceptisols are soils with minimal development, while in other areas they are soils with diagnostic horizons that merely fail the criteria of the other soil orders. Inceptisols have many kinds of diagnostic horizons and epipedons. They can have an anthropic, histic, mollic, ochric, plaggen, or umbric epipedon. Only a very few Inceptisols, however, have a mollic epipedon. The mollic epipedon is restricted to soils with low base saturation below the epipedon. The most common diagnostic horizons are ochric and umbric epipedons, a cambic horizon, and a fragipan. The most common horizon sequence is an ochric epipedon over a cambic horizon, with or without an underlying fragipan. Some Inceptisols have an umbric epipedon overlying a cambic horizon, with or without an underlying duripan or fragipan. A calcic or petrocalcic horizon or a duripan is common in subhumid areas.
| Identifier | MLC-T-ENV-013991 |
|---|---|
| Field | Environment |
| Subject | Natural environments |
| References | USDA Natural Resources Conservation Service Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys (1999) |
Record as JSON
{
"id": "MLC-T-ENV-013991",
"term": "Inceptisols",
"field": "Environment",
"definition": "The central concept of Inceptisols is that of soils that are of cool to very warm, humid and subhumid regions and that have a cambic horizon and an ochric epipedon. The order of Inceptisols includes a wide variety of soils. In some areas Inceptisols are soils with minimal development, while in other areas they are soils with diagnostic horizons that merely fail the criteria of the other soil orders. Inceptisols have many kinds of diagnostic horizons and epipedons. They can have an anthropic, histic, mollic, ochric, plaggen, or umbric epipedon. Only a very few Inceptisols, however, have a mollic epipedon. The mollic epipedon is restricted to soils with low base saturation below the epipedon. The most common diagnostic horizons are ochric and umbric epipedons, a cambic horizon, and a fragipan. The most common horizon sequence is an ochric epipedon over a cambic horizon, with or without an underlying fragipan. Some Inceptisols have an umbric epipedon overlying a cambic horizon, with or without an underlying duripan or fragipan. A calcic or petrocalcic horizon or a duripan is common in subhumid areas.",
"subject": "Natural environments",
"references": [
"USDA Natural Resources Conservation Service Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys (1999)"
],
"url": "https://mlchart.com/terminology/environment/inceptisols/"
}
Record 13,638 of 29,894 in Environment terminology (MLC-0121). Request the full dataset.