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Gelisols are found chiefly in Siberia, Alaska and Canada. Smaller areas are found in the Andes (mainly near the intersection between Chile, Bolivia and Argentina), Tibet, northern Scandinavia and the ice-free parts of Greenland and Antarctica. Fossil Gelisols are known from as far back as Precambrian ice ages 900 million years ago.
There are also many different types of soils that make up the Yukon River Basin. These soils include Entisols, Gelisols, Inceptisols, Inceptisols/Gelisols, Mollisols, Spodosols, and Rough Mountainous Land. [2] Permafrost dominates the Yukon River Basin. Because of the level of permafrost in the basin, the basin itself is far more prone to flash ...
The largest extent of Gleysols is in northern Russia, Siberia, Canada, Alaska, China and Bangladesh. An estimated 200 million hectares of gleysols are found in the tropics, mainly in the Amazon region, equatorial Africa, and the coastal swamps of Southeast Asia. A stagnohumic gleysoil in a forest plantation in Mid-Wales, United Kingdom.
In the US, Gelisols occur only in parts of Alaska; they are characterized by having permafrost within 100 cm of the surface. Histosols are organic soils lacking permafrost within 100 cm of the surface; they are characteristically formed on wet sites, e.g. bogs, some fens and some muskeg areas. Some Histosols have been drained, especially to ...
In gelisols (permafrost soils), cryoturbation (frost churning) refers to the mixing of materials from various horizons of the soil down to the bedrock due to freezing and thawing. Cryoturbation occurs to varying degrees in most gelisols.
Southeast Alaska has an unusual climate that allows a large number of edible plant and edible mushroom species to grow. The area consists primarily of the Tongass National Forest, which is a temperate rainforest. This rainforest has plenty of precipitation and the temperature remains relatively constant, therefore many plant and fungi species ...
Matanuska-Susitna Valley (/ m æ t ə ˈ n uː s k ə s uː ˈ s ɪ t n ə /; known locally as the Mat-Su or The Valley) is an area in Southcentral Alaska south of the Alaska Range about 35 miles (56 km) north of Anchorage, Alaska. [1] It is known for the world record sized cabbages and other vegetables displayed annually in Palmer at the ...
USDA soil taxonomy (ST) developed by the United States Department of Agriculture and the National Cooperative Soil Survey provides an elaborate classification of soil types according to several parameters (most commonly their properties) and in several levels: Order, Suborder, Great Group, Subgroup, Family, and Series.