Organic soils

Definition

Organic soils are soils primarily composed of organic matter such as decomposed plant and animal residues. They are typically found in wetlands or areas with poor drainage.

5 Must Know Facts For Your Next Test

1. Organic soils have a high water-holding capacity due to their sponge-like structure.
2. They are rich in nutrients, especially nitrogen and carbon, which are essential for plant growth.
3. The decomposition rate of organic matter in these soils is slower compared to mineral soils.
4. Organic soils can help mitigate climate change by storing large amounts of carbon.
5. They often exhibit low bulk density, making them less compact than mineral soils.

Review Questions

• What components predominantly make up organic soils?
• Why do organic soils have a high water-holding capacity?
• How do organic soils contribute to mitigating climate change?

Related terms

Humus: The dark, organic material in soil formed from decayed plant and animal matter.

Peat: A type of organic soil that accumulates in waterlogged conditions, often used as fuel or soil conditioner.

Mineral Soils: Soils that are primarily composed of mineral particles like sand, silt, and clay, with minimal organic content.