What are the main horizons in the soil profile?

| November 18, 2020 | education

Horizon A0 is the upper part of the soil profile. Forest litter. It represents fallen plants at various stages of decomposition.
Horizon A – Humus. The most dark-cut. It accumulates organic matter in the form of humus, which is closely related to the mineral part.
Horizon A1 – it contains the largest amount of organic matter. This horizon is mineral-humus-accumulative.
Horizon A2 is podzolic. Formed from acid or alkaline destruction of the mineral part of the A1 horizon.
Horizon Ap – formed from different soil horizons. It is arable.
Horizon B – Well-structured brown horizon. It is under the eluvial.
Horizon B1 – almost completely has the color of humus.
Horizon B2 is just a subhorizon. Uneven coloration.
Horizon B3 – end of humus streaks.
Horizon Вк – highlights the visible secondary cabron in the form of veins or deposits.
Horizon G – typical for soils with excessive moisture.
Horizon C is a parent rock.
Horizon D – rock below the parent.
There is also horizon T – it is peaty.



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