Introduction
Tundra is a treeless biome found in the Arctic and on high mountains where cold temperatures, short growing seasons, and permafrost prevent tree growth.
Arctic tundra covers about 8 million km² across North America, Europe, and Asia. Alpine tundra exists on mountaintops worldwide above the tree line.
1. Siberian Tundra, Russia
- Area: ~3 million km²
- Length: 7,000 km (east to west)
- Permafrost: Continuous
The Siberian tundra is the largest continuous tundra region on Earth. It stretches from the Kola Peninsula to the Bering Strait across the entire northern coast of Russia.
Permafrost beneath the tundra extends hundreds of meters deep and contains an estimated 1,500 gigatonnes of carbon.
2. Canadian Tundra
- Area: ~2.6 million km²
- Provinces/Territories: Nunavut, NWT, northern Quebec
- Wildlife: Caribou, polar bears, snowy owls
The Canadian tundra covers the northern third of Canada. It is home to massive caribou herds that migrate thousands of kilometers each year.
3. Alaskan Tundra, USA
- Area: ~497,000 km²
- Region: North Slope, western Alaska
- Oil: Prudhoe Bay oil field
Alaska's tundra covers the North Slope and much of western Alaska. The region contains the Prudhoe Bay oil field, the largest in North America.
4. Greenland Tundra
- Area: ~410,000 km² (ice-free)
- Ice Coverage: ~80% covered by ice sheet
- Population: ~56,000 total
Only about 20% of Greenland is ice-free, and most of that is tundra. Inuit communities have survived in this environment for thousands of years.
5. Scandinavian Mountain Tundra
Scandinavian mountain tundra supports the indigenous Sami people, who have herded reindeer here for thousands of years. It is the most accessible tundra in the world.
6. Patagonian Steppe/Tundra, Argentina/Chile
- Area: ~400,000 km²
- Type: Cold desert/steppe
- Wind: Constant 50-100 km/h
Patagonia's high-altitude and southern regions transition into tundra-like conditions. The relentless wind and cold create one of the most inhospitable landscapes outside the Arctic.
7. Antarctic Tundra
- Area: ~Very limited ice-free land
- Location: Antarctic Peninsula, islands
- Species: Mosses, lichens, 2 flowering plants
Antarctica has tiny pockets of tundra on the peninsula and surrounding islands. Only two species of flowering plant survive: Antarctic hair grass and Antarctic pearlwort.
8. Tibetan Plateau Alpine Tundra
- Area: ~2.5 million km²
- Elevation: 4,500 m+
- Nickname: Third Pole
The Tibetan Plateau is called the "Third Pole" because it contains more ice than anywhere outside the Arctic and Antarctic. Its alpine tundra supports yaks, snow leopards, and Tibetan antelope.
Key Facts
- Arctic tundra covers approximately 8 million km² across three continents.
- Permafrost beneath Siberian tundra contains 1,500 gigatonnes of trapped carbon.
- Tundra is defined by the absence of trees, not by snow.
- The Tibetan Plateau is called the "Third Pole" due to its ice reserves.
- Only two flowering plant species survive on Antarctic tundra.
Fun Facts
- Caribou herds in Canadian tundra migrate up to 5,000 km per year, the longest land migration.
- Permafrost in Siberia has preserved woolly mammoths so well that their meat is still edible.
- Tundra soil stores twice as much carbon as all the world's forests combined.
- Alaska's tundra thaws so deeply in summer that the ground becomes spongy and vehicles get stuck.
Final Thoughts
The world's tundra regions are vast, treeless landscapes that store enormous amounts of carbon and support unique ecosystems. As climate change warms the Arctic faster than anywhere else, these frozen landscapes are transforming before our eyes.
