: Paleoclimatology: tundra

natural environment > tundra

tundra

In physical geography, tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons. Tundra vegetation is composed of dwarf shrubs, sedges, 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. 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 carbon sink. (Adapted from: https://en.wikipedia.org/wiki/Tundra)

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