SWEET Ontology
type: Ontology
version info: 2.3
imports: propCategorical.owl
imports: statePhysical.owl
imports: phenMixing.owl
imports: relaSpace.owl
imports: rela.owl
imports: realm.owl

Gelisol
type: Class
subclass of: SoilOrder
subclass of: Restriction
  on property: hasProcess
  all values from: Cryoturbation
comment: Gelisols are soils of very cold climates which are defined as containing permafrost within two metres of the soil surface. The word Gelisol comes from the Latin gelare meaning to freeze, a reference to the process of cryoturbation that occurs from the alternating thawing and freezing characteristic of Gelisols.

ActiveLayer
type: Class
subclass of: SoilLayer
subclass of: Restriction
  on property: partOf
  some values from: Permafrost
comment: In environments containing permafrost, the active layer is the top layer of soil that thaws during the summer and freezes again during the autumn.