Enum: SoilHorizonEnum

URI: SoilHorizonEnum

Permissible Values

Value	Description
A horizon	The surface horizon, also called topsoil
B horizon	Also known as the subsoil
C horizon	Also known as the substratum is unconsolidated material deepest in the pit an...
E horizon	Used to refer to subsurface horizons that have undergone a significant loss o...
O horizon	The organic horizon
Permafrost	Soil that continuously remains below 0 °C (32 °F) for two years or more
R layer	Hard bedrock, which is usually the lowest layer

Terms

Name	Description
soil_horizon	Specific layer in the land area which measures parallel to the soil surface a...

See Also

• https://www.nrcs.usda.gov/resources/education-and-teaching-materials/a-soil-profile
• https://www.ffa.org/ag-101/ag-101-soil-horizons/
• https://soil.evs.buffalo.edu/index.php/Soil_Horizons
• https://en.wikipedia.org/wiki/Soil_horizon
• https://en.wikipedia.org/wiki/Permafrost

LinkML Source

name: SoilHorizonEnum
from_schema: https://w3id.org/mixs
see_also:
- https://www.nrcs.usda.gov/resources/education-and-teaching-materials/a-soil-profile
- https://www.ffa.org/ag-101/ag-101-soil-horizons/
- https://soil.evs.buffalo.edu/index.php/Soil_Horizons
- https://en.wikipedia.org/wiki/Soil_horizon
- https://en.wikipedia.org/wiki/Permafrost
permissible_values:
  A horizon:
    text: A horizon
    description: The surface horizon, also called topsoil. It has a defined soil structure,
      and is mostly made up of humus (decayed organic matter).
  B horizon:
    text: B horizon
    description: Also known as the subsoil. It is greatly composed of material illuviated
      (washed in from) layers above it. It is typically denser than the A horizon
      and has a clayey texture.
  C horizon:
    text: C horizon
    description: Also known as the substratum is unconsolidated material deepest in
      the pit and closest to the bedrock.
  E horizon:
    text: E horizon
    description: Used to refer to subsurface horizons that have undergone a significant
      loss of minerals, also known as Eluviation (or leaching).
  O horizon:
    text: O horizon
    description: The organic horizon. Typically at the top of the soil structure and
      is made up of mostly organic matter.
    meaning: http://purl.obolibrary.org/obo/ENVO_03600018
  Permafrost:
    text: Permafrost
    description: Soil that continuously remains below 0 °C (32 °F) for two years or
      more.
  R layer:
    text: R layer
    description: Hard bedrock, which is usually the lowest layer. It is characterized
      by tightly bound and unbreakable materials.
    aliases:
    - R horizon