In physical geography, tundra (/ˈtʌndrə, ˈtʊn-/) is a type of biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра (tûndra) from the Kildin Sámi word тӯндар (tūndâr) meaning "uplands", "treeless mountain tract".[1] Tundra vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundra regions. The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline. The tundra soil is rich in nitrogen and phosphorus.[2]
Tundra
Greenland scoresby-sydkapp2 hg.jpg
Tundra in Greenland
800px-Map-Tundra.png
Map showing Arctic tundra
Geography
Area
11,563,300 km2 (4,464,600 sq mi)
Climate type
ET
There are three regions and associated types of tundra: Arctic tundra,[2] alpine tundra,[2] and Antarctic tundra.[3]
Arctic
Antarctic
Alpine
Climatic classification
See also
References
Further reading
External links
Answers
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Tundra
Greenland scoresby-sydkapp2 hg.jpg
Tundra in Greenland
800px-Map-Tundra.png
Map showing Arctic tundra
Geography
Area
11,563,300 km2 (4,464,600 sq mi)
Climate type
ET
There are three regions and associated types of tundra: Arctic tundra,[2] alpine tundra,[2] and Antarctic tundra.[3]
Arctic
Antarctic
Alpine
Climatic classification
See also
References
Further reading
External links
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