Question

What is soil profile

Answer 1

Answer:

A soil horizon is a layer parallel to the soil surface whose physical, chemical and biological characteristics differ from the layers above and beneath. Horizons are defined in many cases by obvious physical features, mainly colour and texture.

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Answer 2

Soil Profile :-

Soil develops in horizontal layers. If we cut vertically into the Earth, the different layers become visible. A soil profile is a sample taken from the surface down through the soil. The horizontal layers of soil are called soil horizons.

Layers of soil:-

• Topsoil
• Subsoil
• Rock fragments
• Bedrock

1) Topsoil ( A horizon):- It is the topmost layer of the soil. This layer is rich in humus and contains rotten plants and animals.

2) Subsoil ( B horizon):- Subsoil is found below the Topsoil. It is made of silt, clay, sand and some nutrients such as soluble minerals and iron oxides. Rainwater which Deepa I to the surface of the Earth collects in this layer.

3) Rock fragments ( C horizon):- This layer lies in between the subsoil and the parent bedrock. It consists of weathered rocks.

4) Bedrock ( D horizon:- This is the last layer in the soil profile. It is the parent rock. It is a solid layer of unweathered rocks.