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Alpine tundra is a type of natural region or biome that does not contain trees because it is at high elevation, with an associated harsh climate. As the latitude of a location approaches the poles, the threshold elevation for alpine tundra gets lower until it reaches sea level, and alpine tundra merges with polar tundra .
The elevation where trees fail to grow is called the tree line. The biotemperature of the subalpine zone is between 3 and 6 °C (37 and 43 °F). [5] Above the tree line the ecosystem is called the alpine zone or alpine tundra, dominated by grasses and low-growing shrubs. The biotemperature of the alpine zone is between 1.5 and 3 °C (34.7 and ...
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 ] The soil also contains large amounts of biomass and decomposed biomass that has been stored as methane and carbon dioxide in the permafrost , making the tundra soil a ...
Brooks–British Range tundra: Canada, United States: Davis Highlands tundra: Canada: High Arctic tundra: Canada: Interior Yukon–Alaska alpine tundra: Canada, United States: Kalaallit Nunaat high arctic tundra: Greenland: Kalaallit Nunaat low arctic tundra: Greenland: Low Arctic tundra: Canada: Middle Arctic tundra: Canada: Ogilvie ...
The vegetation is alpine and subalpine. The ground cover is 23% low herbaceous cover, 19% shrub, 17% is closed evergreen forest, 11% is open forest, and 28% is bare or has sparse vegetation. [3] The open forest is characterized by discontinuous stands of white spruce (Picea glauca), alpine fir (Abies lasiocarpa) and lodgepole pine (Pinus contorta).
The adversity of soil and climatic conditions proves to low production levels, as well as little biomass accumulation due to slow rates of nutrient release in cold and wet soils, specifically as a result of limited nitrogen and phosphorus (Nadelhoffer et al. 1996) Additionally, there are low temperatures and strong winds in the tundra causing most vegetation to be dominated by woody plants ...
Terrestrial Global 200 ecoregions in Europe comprise three regions of Scandia alpine tundra and taiga, which is present in Finland, Norway, Russia and Sweden: PA0608 Scandinavian and Russian taiga; PA1106 Kola Peninsula tundra; PA1110 Scandinavian montane birch forest and grasslands; Other Global 200 ecoregions:
The lowest altitude of alpine climate varies dramatically by latitude. If alpine climate is defined by the tree line, then it occurs as low as 650 metres (2,130 ft) at 68°N in Sweden, [14] while on Mount Kilimanjaro in Tanzania, the tree line is at 3,950 metres (12,960 ft). [14]