Peat Soil Essay Example for Free

Peat Soil EssayPeat is generally found in stocky layers in limited areas, has low shear strength and high compressive deformation which often results in difficulties when construction work is undertaken on the hold fast. Peat represents the extreme form of subdued soil. It is an constitutive(a) soil which consists more than 75% of total matters. However, the cutoff value of the percentage of organic matter necessary to classify a superficial deposit or soil as peat varies throughout the world, usually depending on the purpose of classification. This cutoff value also serves to differentiate peat from superficial deposits or soils with lesser amounts of organic content. The terms peat and organic soils, used for describing soils with an organic content, were once synonymous but term organic soils is presently used for superficial deposits or soils that contain organic matter. Figure 1 Location of Peat Soil in Malaysia PEAT SOIL SUBSIDENCE Draining of peatland lowers water tab le causing subsidenceRate of subsidence 20 50 cm per year over a period of 5 years after drainage thereafter 5 cm per year. Oxidation sour Peatland water is acidic once drained, peatwater causes severe damage to flora fauna habitats in adjacent areas. Compaction or shrinkage of peat soils may cause groundwater containing fertiliser or pesticide residues to flow from agricultural area to adjacent water catchment area.