A soil profile is a vertical section of soil that reveals its layers, known as horizons. Each layer has distinct characteristics that reflect the soil’s formation and composition. Understanding the soil profile is essential for agriculture, landscaping, and environmental studies.
Also See: Soil Nailing PPT
Soil Profile PPT: Definition, Diagrams, Layers, Types
Contents
O Horizon (Organic Layer)
The O horizon is the topmost layer, rich in organic matter such as decomposed leaves, plants, and microorganisms. It plays a crucial role in providing nutrients and supporting plant growth.
A Horizon (Topsoil)
Below the O horizon lies the A horizon, commonly known as topsoil. This layer is a mixture of organic material and minerals. It is fertile and supports most plant roots, making it essential for agriculture.
Also See: Soil Erosion PPT
E Horizon (Eluviation Layer)
The E horizon is found in some soil profiles and is characterized by the leaching of minerals and organic matter. It appears lighter in color due to the removal of substances, leaving behind sand and silt particles.
B Horizon (Subsoil)
The B horizon, or subsoil, is where minerals leached from upper layers accumulate. This layer is rich in clay, iron, and other minerals, making it denser and less fertile than the topsoil.
C Horizon (Parent Material)
The C horizon consists of partially weathered rock and serves as the parent material for the soil above. It has minimal organic content and is largely unaffected by soil-forming processes.
Also See: Soil Pollution PPT
R Horizon (Bedrock)
The R horizon is the bottommost layer, composed of solid rock. It is the source of the parent material and plays a foundational role in soil formation over time. Understanding these layers helps in analyzing soil health, fertility, and suitability for various uses.
Table of Content for Soil Profile PPT
- Definition of Soils
- What is a Soil Profile?
- Layers
- Diagram
- How to Make a Soil Profile
- Soil Forming Factors
- Components of the Soil Profile
- Conclusion
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