Since the start of 2021, there has been a series of forest fires in Himachal Pradesh, Nagaland-Manipur border, Odisha, Madhya Pradesh, and Gujarat, including in wildlife sanctuaries. April-May is the season when forest fires take place in various parts of the country. But forest fires have been more frequent than usual in Uttarakhand and have also taken place during winter; dry soil caused by a weak monsoon is being seen as one of the causes.
Where have forest fires happened?
January saw prolonged fires in Uttarakhand, Himachal Pradesh (Kullu Valley) and Nagaland-Manipur border (Dzukou Valley). The ongoing one in Nainital began in March-end. The Simlipal National Park in Odisha saw a major fire between February-end and early March.
Uttarakhand has witnessed over 1,000 incidents of forest fire over the last six months, including 45 in the last 24 hours alone, and has reached out to the Centre for helicopters and personnel from the National Disaster Response Force (NDRF). At least five persons and seven animals have been reported killed.
Recent fires include those in Bandhavgarh Forest Reserve in Madhya Pradesh, and in sanctuaries for the Asiatic lion and the great Indian bustard in Gujarat.
Based on previous fire incidents and recorded events, forests of the Northeast and central India regions are the most vulnerable areas to forest fires, the FSI has said. Forests in Assam, Mizoram and Tripura have been identified as ‘extremely prone’ to forest fire.
Areas under the ‘highly prone’ and ‘moderately prone’ categories make up about 26.2% of the total forest cover — a whopping 1,72,374 sq km.
What causes forest fires?
Forest fires can be caused by a number of natural causes, but officials say many major fires in India are triggered mainly by human activities.
Emerging studies link climate change to rising instances of fires globally, especially the massive fires of the Amazon forests in Brazil and in Australia in the last two years. Fires of longer duration, increasing intensity, higher frequency and highly inflammable nature are all being linked to CLIMATE CHANGE.
In India, forest fires are most commonly reported during March and April, when the ground has large quantities of dry wood, logs, dead leaves, stumps, dry grass and weeds that can make forests easily go up in flames if there is a trigger. Under natural circumstances, extreme heat and dryness, friction created by rubbing of branches with each other also have been known to initiate fire.
In Uttarakhand, the lack of soil moisture too is being seen as a key factor. In two consecutive monsoon seasons (2019 and 2020), rainfall has been deficient by 18% and 20% of the seasonal average, respectively.
Why are forest fires difficult to control?
The locality of the forest and access to it pose hurdles in initiating firefighting efforts. During peak season, shortage of staff is another challenge in dispatching firefighting teams.
Timely mobilisation of forest staff, fuel and equipment, depending on the type of fire, through the thick forests remain challenges.
As it is impossible to transport heavy vehicles loaded with water into the thick forests, a majority of fire dousing is initiated manually, using blowers and similar devices. But there have been incidents when forest fires were brought under control using helicopter services.
What factors make forest fires a concern?
Forests play an important role in mitigation and adaptation to climate change. They act as a sink, reservoir and source of carbon. A healthy forest stores and sequesters more carbon than any other terrestrial ecosystem. In India, with 1.70 lakh villages in close proximity to forests (Census 2011), the livelihood of several crores of people is dependent on fuelwood, bamboo, fodder, and small timber.
Forest fires can have multiple adverse effects on the forest cover, soil, tree growth, vegetation, and the overall flora and fauna. Fires render several hectares of forest useless and leave behind ash, making it unfit for any vegetation growth.
What efforts are being taken to protect forests from fire?
Real-time fire information from identified fire hotspots is gathered using sensors (1km by 1km grid) and electronically transmitted to FSI. This information is then relayed via email at state, district, circle, division, range, beat levels.
Since 2004, the FSI developed the Forest Fire Alert System to monitor forest fires in real time. In its advanced version launched in January 2019, the system now uses satellite information gathered from NASA and ISRO.
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