what do you meant by soil profile? label various layers
Answers
The arrangement of soil layers in a soil is known as SOIL PROFILE.
From top to bottom :-
1) O horizon ( Organic Material )
2) A horizon ( Top Soil )
3) B horizon ( Sub Soil )
4) C horizon ( Weathered or decomposed rock)
5) R horizon ( Solid Rock )
Hope it helps...!!!
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.
Explanation:
Soil is made up of many layers. These layers are often called horizons. Depending on the type of soil there may be several layers. There are three main horizons (called A, B, and C) which are present in all soil.
Organic - The organic layer (also called the humus layer) is a thick layer of plant remains such as leaves and twigs.
Topsoil - Topsoil is considered the "A" horizon. It is a fairly thin layer (5 to 10 inches thick) composed of organic matter and minerals. This layer is the primary layer where plants and organisms live.
Subsoil - Subsoil is considered the "B" horizon. This layer is made primarily of clay, iron, and organic matter which accumulated through a process called illuviation.
Parent material - The parent material layer is considered the "C" horizon. This layer is called the parent material because the upper layers developed from this layer. It is made up mostly of large rocks.
5)Bedrock - The bottom layer is several feet below the surface. The bedrock is made up of a large solid mass of rock.
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