A gleysol or gley soil is a hydric soil that unless drained is saturated with groundwater for long enough to develop a characteristic gleyic colour pattern. The pattern is essentially made up of reddish, brownish, or yellowish colours at surfaces of soil particles and/or in the upper soil horizons mixed with greyish/blueish colours inside the ...

Gleysols occupy an estimated 720 million hectares worldwide. They are azonal soils and occur in nearly all climates, from perhumid to arid. The largest extent of Gleysols is in sub-arctic areas in northern Rus-sia, Siberia, Canada and Alaska, and in humid temperate and subtropical lowlands, e.g. in China and Bangladesh.

Gleysol, one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Gleysols are formed under waterlogged conditions produced by rising groundwater. In the tropics and subtropics they are cultivated for rice or, after drainage, for field crops and trees.

Soil water often contains decomposition products of organic matter. Derivation: from the Russian words glei = compact bluish grey Uses: In their natural state, gleys support a range of wet plant species often used for rough grazing or forestry.

2017年3月24日 · The image above is an example of gleying in soil. What is gleying? It is when low oxygen soil conditions (such as a high water table) cause iron and manganese to reduce, and make the soil gray.

Gley soils represent the most extensive soil cover in Scotland. These soils are found on gentler slopes or in areas of high rainfall where the water does not drain away readily. All the...

2021年2月20日 · Gley Soils form in areas where the soil is saturated as a result of periodic or permanent ground- or perched-water tables. Gley Soils occur in predominantly mineral parent materials as distinct from Organic Soils that form from …

Gleysols occur throughout the world where groundwater comes near to the surface, causing soils to become wet for a prolonged part of the year. They are particularly abundant in the low-lying river basins. Soils having gleyic properties (properties associated with prolonged wetness) within 50 cm from the soil surface.

2012年5月2日 · One of the more common and icon soils of Ireland is the gley, which is more commonly known as bogs. The soil has a large clay composition which aids in its inability to drain. This inability for soil to drain leads to eventual oxygen depleted zones which preserves anything in …

The three great groups of the Gleysolic order all have well-developed gley features within 50 cm of the soil's surface. They differ based on the presence of a B horizon enriched in clay (Btg horizon, Luvic Gleysols), anAhhorizon (Humic Gleysols), or …