The wildfires pose threat to subarctic boreal forest. In the boreal forest, the most prevalent type of fire is a crown fire, which spreads quickly from treetop to treetop.
About Boreal Forest:
- The boreal forest (or “taiga”) is the world’s largest land biome.
- Boreal Ecozone:
- It principally spans 8 countries:
- Canada, China, Finland, Japan, Norway, Russia, Sweden and the United States.
- Boreal forests are defined as forests growing in high-latitude environments where freezing temperatures occur for 6 to 8 months and in which trees are capable of reaching a minimum height of 5 m and a canopy cover of 10%.
- It is typically comprised of coniferous tree species such as pine, spruce and fir with some broadleaf species such as poplar and birch.
- The circumboreal belt of forest represents about 30% of the global forest area, contains more surface freshwater than any other biome.
- The forest -- named for Boreas, the Greek god of the north wind -- covers 10 percent of the world's land surface and has a decisive impact on the globe's northern oceans and overall climate.
- The boreal forest is second only to the Amazon in terms of its vital role in ensuring the future of the planet.
- The boreal forest holds twice as much carbon as all tropical forests combined, and also helps purify a massive amount of freshwater.
- increasing forest fires,
- the melting of permafrost,
- intensifying insect infestations and
- warming temperatures.
- They are tilted sideways due to melting permafrost.
- Eventually, the soil will completely erode away from the roots, and the trees will tumble.
- This buckling and sinking is because of the degradation of the permafrost, ground that has remained frozen for at least two years in a row.
Source : The Hindu