Correct option is B
The correct answer is (b).
Peat is fundamentally classified as a Histosol, which is a soil order consisting primarily of highly concentrated organic materials.
These soils are formed in waterlogged conditions where the rate of organic matter accumulation far exceeds its decomposition, leading to thick layers of peat or muck over time.
Information Booster
- Histosols contain at least 20-30% organic matter by weight, making them distinctly different from mineral soils.
- They are typically found in bogs, moors, peats, and swamps where anaerobic conditions restrict microbial decomposition.
- Peatlands store immense amounts of global terrestrial carbon, playing a crucial role in climate regulation and carbon sequestration.
- Histosols have very low bulk density and high water-holding capacity, often acting like giant sponges in hydrological cycles.
- When drained for agriculture, these soils undergo rapid subsidence due to the oxidation of organic matter and physical compaction.
- Burning of drained Histosols releases vast quantities of carbon dioxide, heavily contributing to global greenhouse gas emissions.
- Conservation of peatlands is currently a major focus of international environmental treaties like the Ramsar Convention.
- Ferralsol: These are highly weathered, red and yellow soils typically found in humid tropical climates, rich in iron and aluminum oxides but poor in organic matter.
- Gleysol: Soils formed under waterlogged, reducing conditions characterized by grayish-blue or mottled colors due to the presence of reduced iron (Fe2+).
- Podsol: Acidic soils typical of coniferous forests, characterized by a highly leached, ash-grey surface layer and an underlying horizon accumulating iron and organic matter.
- Understanding soil taxonomy is vital for environmental science to assess land-use capabilities, ecological restoration, and carbon sink potential across different biomes.
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