Indonesia is grappling with a severe wildfire crisis, exacerbated by a "Super El Niño" that has intensified drought conditions. Thousands of active fire hotspots are spreading across the country, contributing to the region's worst transnational haze in over a decade.
A particular concern are the fires burning through Borneo's extensive tropical peatland ecosystems. These areas, covering 4.5 million hectares, normally act as significant reservoirs of ancient carbon. When peatlands ignite, they risk releasing massive quantities of carbon dioxide, carbon monoxide, and methane into the atmosphere, earning them the moniker of "carbon bombs."
Dr. Nisa Novita, a peatland researcher at the Indonesian conservation NGO Yayasan Konservasi Alam Nusantara (YKAN), explains that peatlands store carbon effectively because waterlogged conditions slow decomposition, allowing carbon to accumulate over millennia. However, this also makes them susceptible to becoming "carbon bombs" if drained or burned, leading to rapid carbon release.
These tropical peatlands are among the world's most efficient natural carbon stores. In Kalimantan, peat deposits have been found to exceed 20 meters in depth, with deeper peat holding more carbon. A single hectare of such deep peat can store over 6,000 tonnes of carbon, a quantity roughly equivalent to the annual CO₂ emissions of 4,800 cars. The burning of these deep peatlands allows this stored carbon to be released into the atmosphere at an accelerated rate.
The fires not only pose a significant threat to global climate through greenhouse gas emissions but also create a toxic smog that affects the wider Southeast Asian region. Volunteer firefighters are risking their lives to combat these blazes, working to defuse these environmental hazards.
The ongoing fires highlight the critical role of peatlands in carbon sequestration and the severe consequences when these ecosystems are compromised. Efforts to contain the blazes are crucial in mitigating both local air quality issues and global climate impacts.