What is the soil profile?

soil usually consists of layers of material called horizons, which differ in both texture and appearance. The soil profile is a cross -section of these layers and measures the different properties of each layer. Although each soil from around the world has a different soil profile, most of the soils consist of three or more layers, including topsoil, subsoil and subsoil. The upper layer is generally softer and contains less rocks than deeper layers. Plants also usually lay most of its roots in topsoil. It can be as thin as two inches (5.1 cm) or thick as 5 feet (1.5 m) and often it is dark color, sometimes even black.

In uncultivated areas, it can be dotted with organic matter as leaves, twigs or dead animals that help prevent erosion, maintain moisture and produce nutrient -rich soil. When the organic pad is crumbled, it is often referred to as humus and contains vital nutrients. It is this layer of soil profile from which the plants acquire most of their nutrients.

is a layer of soil profile, which lies directly below the topnice. There are usually no garbage or remnants in this attic layer and there are often lighter colors. The subsoil often consists of clay, mud, pebbles and sand depending on the area, and generally contains the abundance of minerals that were leached from the upper soil layers.

As a man digs deeper and deeper into the soil, he finds that it will happen to rocky and rocky. Some scientists consider another layer of soil profile called regolith as part of the subsoil, while others consider it a completely separate layer. This layer almost never contains the roots of plants or other organic matter, but it is primarily formed and small, weathered rocks.

The subsoil layer is present in almost any different type of soil profile. This layer is made of hard, solid rock, which is eroded and weathered to produce most of the soil above it. The subsoil can be below the surface5 feet (1.5 m), or may even be exposed in some areas. However, in situations where a large part of the upper soil was stored from somewhere else, the subsoil can lay hundreds of feet below the surface.