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Class: SoilMappingUnit

A Soil Mapping Unit (SMU) represents a distinct area with relatively homogeneous

soil characteristics. Each SMU may contain multiple soil types with their

proportional shares.

URI: hwsd2:SoilMappingUnit

classDiagram class SoilMappingUnit click SoilMappingUnit href "../SoilMappingUnit/" SoilMappingUnit : add_prop SoilMappingUnit --> "0..1" AddPropEnum : add_prop click AddPropEnum href "../AddPropEnum/" SoilMappingUnit : awc SoilMappingUnit : bulk_density SoilMappingUnit : coverage SoilMappingUnit --> "0..1" CoverageEnum : coverage click CoverageEnum href "../CoverageEnum/" SoilMappingUnit : drainage SoilMappingUnit --> "0..1" DrainageEnum : drainage click DrainageEnum href "../DrainageEnum/" SoilMappingUnit : fao90 SoilMappingUnit : hwsd1_smu_id SoilMappingUnit : hwsd2_smu_id SoilMappingUnit : id SoilMappingUnit : il SoilMappingUnit --> "0..1" ILEnum : il click ILEnum href "../ILEnum/" SoilMappingUnit : koppen SoilMappingUnit --> "0..1" KoppenEnum : koppen click KoppenEnum href "../KoppenEnum/" SoilMappingUnit : phase1 SoilMappingUnit --> "0..1" PhaseEnum : phase1 click PhaseEnum href "../PhaseEnum/" SoilMappingUnit : phase2 SoilMappingUnit --> "0..1" PhaseEnum : phase2 click PhaseEnum href "../PhaseEnum/" SoilMappingUnit : ref_bulk_density SoilMappingUnit : root_depth SoilMappingUnit --> "0..1" RootDepthEnum : root_depth click RootDepthEnum href "../RootDepthEnum/" SoilMappingUnit : roots SoilMappingUnit --> "0..1" RootsEnum : roots click RootsEnum href "../RootsEnum/" SoilMappingUnit : share SoilMappingUnit : texture_usda SoilMappingUnit --> "0..1" TextureUSDAEnum : texture_usda click TextureUSDAEnum href "../TextureUSDAEnum/" SoilMappingUnit : wise30s_smu_id SoilMappingUnit : wrb2 SoilMappingUnit --> "0..1" FAOSoilTypeEnum : wrb2 click FAOSoilTypeEnum href "../FAOSoilTypeEnum/" SoilMappingUnit : wrb2_code SoilMappingUnit : wrb4 SoilMappingUnit : wrb_phases

Slots

Name Cardinality and Range Description Inheritance
id 1
Integer		 Database internal ID direct
hwsd2_smu_id 1
Integer		 Soil Mapping Unit identifier in HWSD version 2 direct
wise30s_smu_id 0..1
String		 Soil Mapping Unit identifier from WISE30s database direct
hwsd1_smu_id 0..1
Integer		 Soil Mapping Unit identifier from HWSD version 1 direct
coverage 0..1
CoverageEnum		 Data source coverage (ESDB, CHINA, SOTWIS, etc direct
share 0..1
Float		 Percentage share in Soil Mapping Unit direct
wrb4 0..1
String		 Soil Unit Symbol from World Reference Base 2022 (4-character code) direct
wrb_phases 0..1
String		 Detailed Soil Unit Symbol from WRB 2022 with phases direct
wrb2 0..1
FAOSoilTypeEnum		 Dominant WRB 2022 soil group code (2-character HWSD/WRB symbol) direct
wrb2_code 0..1
String		 Numeric code for WRB2 dominant soil group direct
fao90 0..1
String		 Soil Unit Symbol from FAO 1990 classification direct
koppen 0..1
KoppenEnum		 Köppen-Geiger climate classification direct
texture_usda 0..1
TextureUSDAEnum		 USDA soil texture class direct
ref_bulk_density 0..1
Float		 Reference bulk density (SMU level) direct
bulk_density 0..1
Float		 Bulk density (SMU level) direct
drainage 0..1
DrainageEnum		 Reference soil drainage class direct
root_depth 0..1
RootDepthEnum		 Rooting depth category direct
awc 0..1
Float		 Available Water Capacity direct
phase1 0..1
PhaseEnum		 Primary soil phase (Stony, Lithic, Petric, etc direct
phase2 0..1
PhaseEnum		 Secondary soil phase direct
roots 0..1
RootsEnum		 Obstacle to roots depth in cm (ESDB) direct
il 0..1
ILEnum		 Impermeable layer depth in cm (ESDB) direct
add_prop 0..1
AddPropEnum		 Additional soil properties (Gelic, Vertic) direct

Identifier and Mapping Information

Schema Source

  • from schema: https://w3id.org/bioepic-data/fao-soils/hwsd2

Mappings

Mapping Type Mapped Value
self hwsd2:SoilMappingUnit
native hwsd2:SoilMappingUnit

LinkML Source

Direct

name: SoilMappingUnit
description: 'A Soil Mapping Unit (SMU) represents a distinct area with relatively
  homogeneous

  soil characteristics. Each SMU may contain multiple soil types with their

  proportional shares.'
from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
slots:
- id
- hwsd2_smu_id
- wise30s_smu_id
- hwsd1_smu_id
- coverage
- share
- wrb4
- wrb_phases
- wrb2
- wrb2_code
- fao90
- koppen
- texture_usda
- ref_bulk_density
- bulk_density
- drainage
- root_depth
- awc
- phase1
- phase2
- roots
- il
- add_prop
class_uri: hwsd2:SoilMappingUnit

Induced

name: SoilMappingUnit
description: 'A Soil Mapping Unit (SMU) represents a distinct area with relatively
  homogeneous

  soil characteristics. Each SMU may contain multiple soil types with their

  proportional shares.'
from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
attributes:
  id:
    name: id
    description: Database internal ID
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    identifier: true
    alias: id
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    - WRBClass
    range: integer
  hwsd2_smu_id:
    name: hwsd2_smu_id
    description: Soil Mapping Unit identifier in HWSD version 2
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: hwsd2_smu_id
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: integer
    required: true
  wise30s_smu_id:
    name: wise30s_smu_id
    description: Soil Mapping Unit identifier from WISE30s database
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: wise30s_smu_id
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: string
  hwsd1_smu_id:
    name: hwsd1_smu_id
    description: Soil Mapping Unit identifier from HWSD version 1
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: hwsd1_smu_id
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: integer
  coverage:
    name: coverage
    description: Data source coverage (ESDB, CHINA, SOTWIS, etc.)
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: coverage
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: CoverageEnum
  share:
    name: share
    description: Percentage share in Soil Mapping Unit
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: share
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: float
    minimum_value: 0
    maximum_value: 100
    unit:
      ucum_code: '%'
  wrb4:
    name: wrb4
    description: Soil Unit Symbol from World Reference Base 2022 (4-character code)
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: wrb4
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: string
  wrb_phases:
    name: wrb_phases
    description: Detailed Soil Unit Symbol from WRB 2022 with phases
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: wrb_phases
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: string
  wrb2:
    name: wrb2
    description: 'Dominant WRB 2022 soil group code (2-character HWSD/WRB symbol).


      Example usage:

      wrb2: FR  # Ferralsols - tropical weathered soils

      wrb2: CR  # Cryosols - permafrost soils

      wrb2: GG  # Glaciers - non-soil areas'
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: wrb2
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: FAOSoilTypeEnum
  wrb2_code:
    name: wrb2_code
    description: Numeric code for WRB2 dominant soil group
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: wrb2_code
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    range: string
  fao90:
    name: fao90
    description: Soil Unit Symbol from FAO 1990 classification
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: fao90
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: string
  koppen:
    name: koppen
    description: Köppen-Geiger climate classification
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: koppen
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    range: KoppenEnum
  texture_usda:
    name: texture_usda
    description: USDA soil texture class
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: texture_usda
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: TextureUSDAEnum
  ref_bulk_density:
    name: ref_bulk_density
    description: Reference bulk density (SMU level)
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: ref_bulk_density
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    range: float
    minimum_value: 0
    maximum_value: 3
    unit:
      ucum_code: g/cm3
  bulk_density:
    name: bulk_density
    description: Bulk density (SMU level)
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: bulk_density
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    range: float
    minimum_value: 0
    maximum_value: 3
    unit:
      ucum_code: g/cm3
  drainage:
    name: drainage
    description: Reference soil drainage class
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: drainage
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: DrainageEnum
  root_depth:
    name: root_depth
    description: Rooting depth category
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: root_depth
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    range: RootDepthEnum
  awc:
    name: awc
    description: Available Water Capacity
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: awc
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    range: float
    minimum_value: 0
    unit:
      ucum_code: mm/m
  phase1:
    name: phase1
    description: Primary soil phase (Stony, Lithic, Petric, etc.)
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: phase1
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: PhaseEnum
  phase2:
    name: phase2
    description: Secondary soil phase
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: phase2
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: PhaseEnum
  roots:
    name: roots
    description: Obstacle to roots depth in cm (ESDB)
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: roots
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: RootsEnum
  il:
    name: il
    description: Impermeable layer depth in cm (ESDB)
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: il
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: ILEnum
  add_prop:
    name: add_prop
    description: Additional soil properties (Gelic, Vertic)
    from_schema: https://w3id.org/bioepic-data/fao-soils/hwsd2
    rank: 1000
    alias: add_prop
    owner: SoilMappingUnit
    domain_of:
    - SoilMappingUnit
    - SoilLayer
    range: AddPropEnum
class_uri: hwsd2:SoilMappingUnit