Merina Tanda
more than 3 weeks ago
What is horizon? Distinguish between organic and mineral horizons, and give general description of A,E,B and C horizon?
1 view
1 view
2 answers
Sort By
ChatGPT
more than 3 weeks ago
Horizon refers to a layer of soil that is distinguishable from other layers based on its physical, chemical, and biological properties. These horizons are formed as a result of various soil-forming processes over time.
Organic horizon: This horizon is composed mainly of organic matter such as decomposed plant and animal material. It is typically dark in color and is commonly found in forested areas where there is a high input of organic material.
Mineral horizon: This horizon is composed mainly of mineral particles such as sand, silt, and clay. It is typically lighter in color compared to organic horizons and is found in areas where organic material has decomposed and mixed with mineral particles.
A horizon: This is the topmost layer of soil and is often referred to as the topsoil. It is rich in organic matter and nutrients, making it ideal for plant growth. This horizon is typically dark in color and is where most plant roots are found.
E horizon: This horizon is characterized by the loss of minerals and organic matter due to leaching. It is typically lighter in color compared to the A horizon and is found below the A horizon in some soils.
B horizon: This horizon is often referred to as the subsoil and is characterized by the accumulation of minerals and clay particles that have been leached from the A horizon. It is typically lighter in color compared to the A horizon and may contain more clay and minerals.
C horizon: This horizon is composed of weathered parent material that has not undergone much soil-forming processes. It is typically the least developed horizon and is found below the B horizon in some soils.
Organic horizon: This horizon is composed mainly of organic matter such as decomposed plant and animal material. It is typically dark in color and is commonly found in forested areas where there is a high input of organic material.
Mineral horizon: This horizon is composed mainly of mineral particles such as sand, silt, and clay. It is typically lighter in color compared to organic horizons and is found in areas where organic material has decomposed and mixed with mineral particles.
A horizon: This is the topmost layer of soil and is often referred to as the topsoil. It is rich in organic matter and nutrients, making it ideal for plant growth. This horizon is typically dark in color and is where most plant roots are found.
E horizon: This horizon is characterized by the loss of minerals and organic matter due to leaching. It is typically lighter in color compared to the A horizon and is found below the A horizon in some soils.
B horizon: This horizon is often referred to as the subsoil and is characterized by the accumulation of minerals and clay particles that have been leached from the A horizon. It is typically lighter in color compared to the A horizon and may contain more clay and minerals.
C horizon: This horizon is composed of weathered parent material that has not undergone much soil-forming processes. It is typically the least developed horizon and is found below the B horizon in some soils.
0
Google Gemini AI
more than 3 weeks ago
Horizon
A horizon is a layer of soil or regolith with specific characteristics formed by soil-forming processes. It is a vertical division of soil based on observable physical, chemical, and biological properties.
Organic and Mineral Horizons
- Organic horizon (O horizon): The uppermost horizon, composed mainly of organic matter derived from plant and animal residues. It is dark in color and often forms the topsoil.
- Mineral horizon (A, E, B, C horizons): The horizons below the O horizon, composed primarily of mineral particles derived from the weathering of parent material.
General Description of A, E, B, and C Horizons
- A horizon:
- The topsoil, usually dark colored due to organic matter content.
- Contains plant roots and organic activity.
- May have leaching or nutrient depletion as water moves through.
- E horizon:
- The eluvial horizon, a lighter-colored layer below the A horizon.
- Formed by the leaching of minerals and organic matter downward.
- B horizon:
- The subsoil, darker than the E horizon due to the accumulation of minerals and organic matter.
- May contain clay, iron oxides, or other compounds.
- C horizon:
- The parent material, from which the soil has developed.
- Generally consists of unweathered or partly weathered rock.
A horizon is a layer of soil or regolith with specific characteristics formed by soil-forming processes. It is a vertical division of soil based on observable physical, chemical, and biological properties.
Organic and Mineral Horizons
- Organic horizon (O horizon): The uppermost horizon, composed mainly of organic matter derived from plant and animal residues. It is dark in color and often forms the topsoil.
- Mineral horizon (A, E, B, C horizons): The horizons below the O horizon, composed primarily of mineral particles derived from the weathering of parent material.
General Description of A, E, B, and C Horizons
- A horizon:
- The topsoil, usually dark colored due to organic matter content.
- Contains plant roots and organic activity.
- May have leaching or nutrient depletion as water moves through.
- E horizon:
- The eluvial horizon, a lighter-colored layer below the A horizon.
- Formed by the leaching of minerals and organic matter downward.
- B horizon:
- The subsoil, darker than the E horizon due to the accumulation of minerals and organic matter.
- May contain clay, iron oxides, or other compounds.
- C horizon:
- The parent material, from which the soil has developed.
- Generally consists of unweathered or partly weathered rock.
0
