Soaring Himalayan wildfires don’t have only climate change to blame

Nepal has already seen 5,000 wildfires in 2024, the second-most wildfires recorded in a single year since record-keeping began in 2002. The fires have killed more than 100 people and have for days engulfed Kathmandu in hazardous wildfire smog.

“There is no respite from fires — both forest fires and house fires — continue to wreak havoc across the country in recent days,” the Kathmandu Post reported in April. “Massive fires have been raging across hectares of forest lands in more than a dozen places.”

Smoke from fires in Nepal -- NASA photo
A satellite fire map by NASA shows fire hotspots dotted across the bottom of the Himalayas, with a few creeping up the mountains. Image acquired by one of the Copernicus Sentinel-2 satellites on March 28, showing the region near Kathmandu engulfed in smoke.

The newfound prevalence of wildfires in the country has spiked researchers’ interest. A study published in the Climate Change scientific journal in 2023 analyzed the aftermath of 2021, Nepal’s worst wildfire year on record with 6,300 wildfires.

“In spring 2021, Nepal underwent a record wildfire season in which active fires were detected at a rate 10 times greater than the 2002–2020 average,” the study reported. “Prior to these major wildfire events, the country experienced a prolonged precipitation deficit and extreme drought during the post-monsoon period.”

Researchers concluded that both climate variability and climate change-induced severe drought played a factor in the country’s explosive wildfire growth. However, an environmental scientist stationed in Kathmandu recently told the Nature scientific journal that the study didn’t tell the full story.

Uttam Babu Shrestha, stationed at Kathmandu’s Global Institute for Interdisciplinary Studies, told Nature a large cause of increasing wildfires is the deterioration of Nepal’s relationship with its forests. A 1979 World Bank report warned that the nation was nearing an “ecological disaster” as a result of the country’s widespread deforestation and heavy reliance on agriculture. Nepal’s government listened and decentralized the management of its forests, resulting in the country’s forest cover nearly doubling in three decades. The abolition of the country’s monarchy and transition to a federal system, however, left forest management by the wayside.

“But this new political atmosphere didn’t prioritize the management of community forests like before,” Shrestha said. “With no clear benefits coming out of forests, the locals don’t feel the same ownership.”

A proposal to lessen both wildfire severity and forest management inaction was proposed by the lead researcher of the 2023 study. Binod Pokhrel, a climate scientist at Tribhuvan University in Kathmandu, found that Nepal’s 282 weather stations could work together to inform community members.

“By using weather station data, we could precisely forecast drought index up to a local ward level,” Pokhrel told Nature. “The lack of management of increasing forest cover can easily lead to another disaster.”

Pokhrel proposed that a smartphone-based fire forecast would reduce the chance of fires getting out of control — and save lives. The International Centre for Integrated Mountain Development uses a similar idea to update its wildfire-monitoring webpage, but Pokhrel told Nature that the Nepalese government must be involved to safeguard against future disastrous wildfires.

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