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World Affairs, Ecology & Environment
Mahesh

19/07/22 13:54 PM IST

Forest fires rage in scorching southwest Europe

In News 
  • In France, Greece, Portugal and Spain, blaze destroys thousands of hectares of land, forces thousands from their homes and kills several emergency personnel.
Wild Fires 
  • A wildfire is a major fire that breaks out unpredictably in combustible environments such as dry forests or bush and often burns uncontrollably over a large area and length of time. A forest fire can be triggered by natural factors such as prolonged hot, dry weather or lightning strikes, or human carelessness.000
  • Heatwaves have become more frequent, more intense, and last longer because of human-induced climate change. The world has already warmed by about 1.1C since the industrial era began and temperatures will keep rising unless governments around the world make steep cuts to carbon emissions.
  • As per the Global Forest Watch, forest fires in India have increased by 125% (between 2015 and 2017). At a global level as well, the world is undergoing through wildfire crisis, with reports of wildfires in Siberia, the Amazon basin, Pantanal wetland (South America), Australia, and the rainforest of Indonesia.
Reason behind Wild fires 
  • Extreme climatic conditions: g. high wind speed and direction, temperature, low level of moisture in soil and atmosphere, and duration of dry spells.
  • Lightning strike:g. in Australia, most bushfires are caused by lightning
  • The friction of bamboos swaying due to high wind velocity: e.g. in deciduous forests of northeast India Rolling stones that result in sparks: In the mountainous forested e.g. Uttrakhand
  • Role of El Nino and La Nina:g. Indonesian in 2019 experienced high forest fire incidents due to el Nino’s impact
  • Role of sudden stratospheric warming in Antarctica: 2020 bush fires in Australia was further strengthened
Human Related reasons 
  • Human-caused fires are also a major issue in Indonesia, where large areas of peatland were burned during last year’s fires to be converted into tree plantations.
  • In Pantanal (South America): Soy and cattle farmers set fires on their land during the summer, but drought and strong winds caused these fires to rage out of control and surpass traditional barriers such as roads and streams.
  • Graziers and gatherers start small fires to get good grazing grass for their cattle and to gathering minor forest produce such as Madhuca Indica flowers and leaves of Diospyros elanoxylon.
  • Shifting cultivation practice: North-Eastern region of India and in parts of the States of Orissa and Andhra Pradesh).
  • Forest fires by villagers to ward off wild animals.
  • In Siberia and Russia, climate change is causing winters to become shorter and weather to become drier and windier, leading to more intense fires occurring across larger areas.
Source- The Hindu 

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