Tundra

Tundra
	Tundra in Greenland
	Cairt o arctic tundra shawn in orange
Geografie
Aurie	11,563,300 km2 (4,464,600 sq mi)
Climate teep	ET

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In pheesical geografie, a tundra is a biome where the tree growth is hindered by law temperatures an short growing sessions. The term tundra comes through Roushie тундра frae the Kildin Sami wird tūndâr "uplands", "treeless muntain tract".^[1] There are three types o tundra: arctic tundra,^[2] alpine tundra,^[2] an antarctic tundra.^[3] In a tundra, the vegetation is componed of dwarf shrubs, sedges an grasses, mosses, an lichens. Scattered trees grow in some tundras. The ecotone (or ecological boondary region) atween the tundra an the forest is kent as the tree line or timberline.

References

↑ Aapala, Kirsti. "Tunturista jängälle". Kieli-ikkunat. Archived frae the original on 1 October 2006. Retrieved 19 Januar 2009.Archived 2006-10-01 at the Wayback Machine
↑ ^a ^b "The Tundra Biome". The World's Biomes. Retrieved 5 Mairch 2006.
↑ "Terrestrial Ecoregions: Antarctica". Wild World. National Geographic. Archived frae the original on 21 October 2011. Retrieved 2 November 2009.

[1] Aapala, Kirsti. "Tunturista jängälle". Kieli-ikkunat. Archived frae the original on 1 October 2006. Retrieved 19 Januar 2009.Archived 2006-10-01 at the Wayback Machine

[berkeley-2] "The Tundra Biome". The World's Biomes. Retrieved 5 Mairch 2006.

[wwf-3] "Terrestrial Ecoregions: Antarctica". Wild World. National Geographic. Archived frae the original on 21 October 2011. Retrieved 2 November 2009.

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