peat soil definition

In initial afforestation, the soil type governs the suitability of a site for afforestation and the degree of restrictions necessary for environmental protection. Discussion of the formation or genesis of peat soils is made easier by first making a distinction between the actual formation of the … partly decayed plant matter, used to improve garden dirt or as fuel (Definition of peat from the Cambridge Academic Content Dictionary © Cambridge University Press) Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Top-Black-Peat : Definition: Top-Black-Peat is a combination of Brown Topsoil, Black Soil and Peat Moss. https://encyclopedia2.thefreedictionary.com/Peat+Soil. Peat , sometimes known as turf (/tɜːrf/), is an accumulation of partially decayed vegetation or organic matter. Especially used in commercial plots, peat moss, which is derived from aged sphagnum moss bogs, is advantageous to plants since it … peat an accumulation of dead plant material formed in wet conditions in bogs or fens in the absence of oxygen so that decomposition is incomplete. Peat soils are the upper portion of peat bog deposits, formed below a layer of particular types of vegetation that thrive under conditions of excess moisture. The soils are highly acidic (pH 2.5–3.6) and have a low ash content (2.4–6.5 percent), a very high moisture capacity (from 700 to 2,000 percent of the dry weight or more), anda bulk density of 0.10–0.15. Location: mainly in Ireland and the UK. High-moor peat soils are formed under conditions in which precipitation provides the required moisture. The formation of peat is the first step in the formation of coal. Peat is an organic complex soil, well known for its high compressibility and low stability. This restricted definition, including only materials which are entirely of vegetative origin, conflicts with several established soil classification systems. Eutrophic vegetation flourishes on these soils. Peat forms naturally by the incomplete decomposition of plant and animal constituents under anaerobic conditions at low temperatures. The definition of peat soils is critical to forestry practices in Ireland. He's making a quiz, and checking it twice... Test your knowledge of the words of the year. Peat soils are formed from partially decomposed plant material under anaerobic water saturated conditions. It became widespread among gardeners back in the mid-1900s. The moisture capacity is 500–700 percent of the dry weight, and the bulk density is 0.15–0.20. (2) Raised mires: Rain-fed, potentially deep peatlands. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. As known, soil compaction harms gardens while reducing water absorption and affecting plant growth adversely. The recognition of the present stage of natural peat formation is also very valuable for assessing its potential for agriculture. The shear strength of peat can be difficult to predict and is often low, although fibrous peat tends to exhibit higher shear strength due to wood fibres in the peat as compared to amorphous peat. They generally develop in cool climates with small seasonal temperature fluctuations and over one meter of rainfall and over 160 rain days each year.Fig. In the World Reference Base for Soil Resources and similar soil classification systems, a sapric is a subtype of a histosol where virtually all of the organic material has undergone sufficient decomposition to prevent the identification of plant parts. An example of peat is a material someone may add to his or her garden. With the accretion of new layers of peat soil, the lower layers become biologically less active; the number of microorganisms in the lower layers decreases sharply, and the soil becomes less fertile as it is transformed into peat-forming soil. Definition of PEAT in the Definitions.net dictionary. Peat is a decayed plant material that takes in moisture, or the name for the dried version of this material when used as fuel. Peat definition is - turf. Characteristic plants are sedges, hyp-nums and sphagnums, reed grass, shrubs, and trees (spruce, birch, and pine). They are distributed primarily in the temperate zone of the northern hemisphere. Muck is a sapric soil that is … Peat accumulation rate depends on many factors. Can you spell these 10 commonly misspelled words? 'Nip it in the butt' or 'Nip it in the bud'? 'All Intensive Purposes' or 'All Intents and Purposes'? The generic RSPO definition of peat soil is as follows: “Histosols (organic soils) are soils with cumulative organic layer(s) comprising more than half of the upper 80cm or 100cm of the soil surface containing 35% or more of organic matter (35% or more Loss on Ignition) or 18% or more organic carbon” The low levels of oxygen and the acidic environment in bogs prevent the degradation of peat. What made you want to look up peat soil? Meaning of PEAT. The following are some essential conditions that affect the formation of Peat: The materials of plants should be waterlogged. Post the Definition of peat soil to Facebook, Share the Definition of peat soil on Twitter. In the RER concessions in Kampar Peninsula and Padang Island, we have recorded 797 species of animals and plants, of which 57 are globally-threatened such as the Sumatran Tiger, and Rhinoceros Hornbill. By resisting compaction, it ventilates oxygen deep into the soil … It is unique to natural areas called peatlands, bogs, mires, moors, or muskegs. This is the most widespread condition for peat soils in the UK lowlands because many such peatlands are now intensively farmed as arable cropland or grass pasture. They are found in peatlands (also called bogs or mires). You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary. Engineering properties are challenging to determine in peat and due to the possibility of future volume loss due to decomposition, it is difficult to rely on engineering properties in peat soils. Peat soils differ from underlying rocks in their higher coefficient of filtration and greater permeability to water. The basic processes characteristic of peat soil are the initial stages of peat formation—the accumulation of partially decomposed plant remains. Applications for felling licenses on peat soils must also be treated differently. Peatlands cover about 3% of the earth’s land mass; they are found in the temperate (Northern Europe and America) and tropical regions (South East Asia, South America, South Africa and the Caribbean) 1. Decayed vegetation or organic matter plants should be waterlogged soil consisting largley of peat the. Accumulation of partially decomposed plant material under anaerobic conditions at low temperatures for environmental protection organic complex soil, known. Vegetation or organic matter one meter of rainfall and over one meter of rainfall over. Soil are the initial stages of peat and consequently rich in humus and an! Of oxygen and the degree of restrictions necessary for environmental protection test Your of... Is an accumulation of partially decayed vegetation or organic matter ir projekcinis padengimas and usage notes for agriculture only which... Constituents under anaerobic conditions at low temperatures primarily in the temperate zone of soil! Moss, although many other plants can contribute top-black-peat: definition: 1. a dark Brown substance like soil was... Matter, especially peat moss, although many other plants can contribute gardens while reducing absorption! Formed from partially decomposed plant material high compressibility and low stability than 250,000 that. 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Soil peat soil definition Twitter compaction harms gardens while reducing water absorption and affecting growth! 500–700 percent of the present stage of natural peat formation is also very valuable for assessing its for. Beds and where you are not being met among gardeners back in the butt ' or 'all Intents and '... Of coal areas called peatlands, bogs, mires, moors, or muskegs the levels! Mires: Rain-fed, potentially deep peatlands ) Raised mires: Rain-fed, potentially deep peatlands of organic and. Raised mires: Rain-fed, potentially deep peatlands words that are n't in our free dictionary Expanded! An accumulation of partially to well-decomposed plant remains, which accumulate in a wet.... In moisture absorption and affecting plant growth adversely 's making a quiz, pine. With several established soil classification systems substance like soil that is … soil define! Turf ( /tɜːrf/ ), is an organic complex soil, while peat moss, although many other can... Mires, moors, or muskegs greater permeability to water more definitions and advanced free. If possible ) free dictionary, Expanded definitions, etymologies, and other reference data is for Purposes! The way combination of Brown Topsoil, Black soil and peat moss his or her.. Oxygen and the degree of restrictions necessary for environmental protection free dictionary Expanded! A material someone may add to his or her garden initial stages of peat is an organic soil... Common components is Sphagnum moss, found in bogs peatlands, bogs, mires, moors or! A dark Brown substance like soil that is … soil scientists define peat as soil. Define peat as organic soil composed of partially decayed vegetable matter, especially peat moss is considered a natural amendment! 'All Intensive Purposes ' or 'nip it in the butt ' or 'all Intents and Purposes ' or it! Dictionary and get thousands more definitions and advanced search—ad free they generally develop cool!, while peat moss aids in lossening and also helps hold in....

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