Mind map

Soil

Riona Stevenson Geography (JC) Junior Certificate English

Map content

Soil

Influences on formation
- Living organisms
- Landscape
- Vegetation
- Time
- Parent material
- Climate
Composition
- 43% mineral matter
- 25% air
- 25% water
- 5% humus
- 2% living organisms
Leaching
- Causes hardpan
Profile
- A horizon
  - Topsoil
- B horizon
  - Subsoil
- O horizon
  - Plant litter
- C horizon
  - Bedrock/parent material
Human interference
- Soil erosion
  - Overcropping
  - Deforestation
  - Overgrazing
Characteristics affecting vegetation
- Fertility
- Acidity
- Depth
- Drainage
International soils
- Tropical red soils
Irish soils
- Brown earth
- Podzols
- Gley
- Peaty

Description: Junior Certificate Geography (JC) (Soil) Mind Map on Soil, created by Riona Stevenson on 31/01/2019.
Created by: Riona Stevenson
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