OBJECTIVE FORESTRY

Detailed explanation-1: -A HORIZON-This is the layer that we call “topsoil” and it is located just below the O Horizon. This layer is made up of minerals and decomposed organic matter and it is also very dark in color. This is the layer that many plants roots grow in.

Detailed explanation-2: -In soil: Soil horizons. … horizon sequence is called the solum (Latin: “floor”). The solum is the true seat of soil-forming processes and is the principal habitat for soil organisms.

Detailed explanation-3: -The A/E/B horizons are referred to collectively as the “solum", the surface depth of the soil where biologically activity and climate effects drives pedogenesis. The layers below the solum have no collective name but are distinct in that they are noticeably less affected by surface soil-forming processes.

Detailed explanation-4: -The A horizon is the most important part of a soil, as it is often the cultivated layer and contains most of the available plant nutrients and soil organisms.

Detailed explanation-5: -Topsoil: Topsoil is often referred to as the organic layer. In this layer, plants grow and animals live on top of the soil.