tundra

In physical geography, tundra is a biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian ÑÑÐ½Ð´ÑÐ° from the Kildin Sami word tÅ«ndÃ¢r "uplands", "treeless mountain tract".[1] There are three types of tundra: Arctic tundra,[2]alpine tundra,[2] and Antarctic tundra.[3] In tundra, the vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundra. The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline.

For more information about tundra check the Wikipedia article here

ZME Science posts about tundra

Global warming turns tundra to forests

Mon, Jun 4, 2012

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Typically, in the tundras, tree growth is hindered by very low temperatures, and usually, in the tundra, vegetation comprises of dwarf shrubs, sedges and grasses, lichens, etc. However, according to a recent study, plants and shrubs which colonized the Arctic tundra are starting to turn into small trees, a process which will accelerate global warming [...]

arctic warming, climate change, global warming, tundra

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