|natural = tundra|
|Treeless habitat, characterised by open, low growing vegetation with sedges, grasses, mosses and lichens.|
|Used on these elements|
|Tools for this tag|
Treeless habitat, characterised by open, low growing vegetation with sedges, grasses, mosses and lichens.
In physical geography, a tundra is a region where the tree growth is hindered by low temperatures and short growing seasons. There are three types of tundra: arctic tundra, alpine tundra and antarctic tundra. In a tundra, the vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundras. About 5% of the world belongs to the vegetation zone "tundra".
Alpine tundra occurs in mountains worldwide. The flora of the alpine tundra is characterized by perennial grasses, sedges, forbs and dwarf shrubs close to the ground. The cold climate of the alpine tundra is caused by the low air pressure, and is similar to polar climate. The boundary between the tundra and the forest is known as the tree line.
Should only be used for areas with actual tundra vegetation, not for large scale tagging of areas with a climate where tundra occurs. Neither should it be used for areas treeless only due to human activities. For areas lacking vegetation due to cold climate use natural=sand, natural=scree, natural=shingle or natural=bare_rock.