Three terms for describing the state of organic material in peats and peaty soils (Histosols). Fibric marks an early stage in the decomposition of organic matter in the process of peat formation. Vegetable fibers are prominent and easily identified making up two thirds of the OM. Sapric relates to OM in which less than one sixth is recognizable as original plant material. Hemic is intermediate between the other two.
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Bibliography
FAO, 2001. Lecture notes on the major soils of the world. World Soil Resources Reports, 94. Rome: Food and Agriculture Organization of the United Nations, 334 pp.
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(2008). Fibric, Hemic and Sapric. In: Chesworth, W. (eds) Encyclopedia of Soil Science. Encyclopedia of Earth Sciences Series. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-3995-9_225
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