Indonesia Wildfires Threaten Nature Again

Indonesia is facing one of its most serious wildfire seasons in more than a decade, creating a growing threat to forests, peatlands, wildlife and fragile tropical ecosystems. Although the number of detected hotspots has recently fluctuated, environmental groups warn that the danger is far from over. Fires burning in peatlands can continue underground, making them difficult to detect, extinguish and control.

The latest situation has renewed concerns about Indonesia's ability to protect some of the world's most important tropical landscapes. The combination of extreme heat, dry conditions, degraded peatlands and the influence of a strong El Niño climate pattern has created conditions in which fires can spread rapidly.

According to Reuters, Indonesia has been battling its most intense wildfires in about 11 years. Environmental groups have warned that the government must remain on high alert even after a decline in some detected hotspots because peatland fires can flare up again during continued hot and dry weather.

For nature, the problem goes far beyond visible flames. Tropical forests provide habitat for endangered animals, store carbon, regulate water and support local communities. When these ecosystems burn, recovery can take years or even decades.

Why Indonesia's Wildfires Are So Dangerous

Indonesia's wildfire problem is closely connected with its extensive peatlands. Peat is formed from partially decomposed plant material accumulated over long periods in waterlogged environments. These wetlands are exceptionally important natural carbon stores.

When peatlands remain wet, they are relatively resistant to fire. But drainage, land conversion and prolonged drought can lower the water table and turn peat into highly flammable material.

Read similar articles: El Niño Wildfires Are Devastating Indonesia’s Orangutans

NASA's Earth Observatory has reported that fires in Indonesia can burn both on the surface and underground. Satellite observations have shown extensive smoke across parts of Borneo, while researchers warn that underground peat fires can continue burning until substantial rainfall returns.

That makes a peatland wildfire fundamentally different from an ordinary grass or forest fire. Flames may disappear from the surface while combustion continues below ground. A fire can then re-emerge later, sometimes far from the location where it was initially visible.

Peat fires can also produce high levels of air pollutants. This creates risks not only for forests and wildlife but also for people living in affected regions.

El Niño Is Making Fire Conditions Worse

Weather is an important part of the current crisis. Indonesia is experiencing a strong El Niño pattern, which can reduce rainfall and intensify drought across parts of the archipelago.

Dry weather does not automatically create a wildfire, but it makes landscapes much easier to ignite and allows existing fires to spread. Peatlands that have already been drained or degraded become especially vulnerable.

NASA has reported extremely dry conditions across large parts of Indonesia during the 2026 fire season. Such conditions can dramatically increase fire danger across vulnerable landscapes.

Reuters has also reported that Indonesia's 2026 fire season has produced exceptionally high emissions. Wildfire emissions have at times ranked among the highest globally, according to atmospheric monitoring data.

This demonstrates why the Indonesian fires are not simply a local environmental story. Large-scale tropical fires can influence regional air quality and contribute significant greenhouse gas emissions to the atmosphere.

Peatlands: The Hidden Part of the Fire Crisis

One of the biggest environmental concerns is what happens below the surface.

Peatlands can contain enormous quantities of stored carbon. When peat burns, carbon that accumulated over many years can be released rapidly into the atmosphere. The ecological damage can therefore continue long after the visible fire has disappeared.

Researchers have increasingly focused on peatland restoration as a way to reduce wildfire risk. A 2026 study published in Geophysical Research Letters examined restoration methods including canal blocking and groundwater management.

The research provides evidence that restoring the natural hydrology of degraded peatlands can reduce fire risk in some Indonesian landscapes. However, the effectiveness of restoration can vary depending on local climate, ecosystem conditions and the type of intervention used.

This finding is important because preventing future fires is not simply a matter of sending more firefighters after flames appear. Keeping peatlands wet and restoring their natural hydrology can be part of a long-term wildfire prevention strategy.

Forests and Wildlife Face Long-Term Damage

Indonesia contains some of the world's richest tropical biodiversity. Its forests and wetlands provide habitat for species including orangutans, gibbons, hornbills, sun bears, clouded leopards and thousands of other animals and plants.

Wildfires can destroy vegetation that animals depend on for food and shelter. Smoke can also affect wildlife over large areas, while the loss of forest fragments populations and reduces access to safe habitat.

The consequences can be especially serious for species that already face habitat loss. When a forest burns, animals may be forced into smaller remaining areas, increasing competition for food and shelter.

Orangutans are particularly vulnerable because large areas of their natural habitat occur in forest and peatland environments exposed to fire. Repeated fires can reduce food availability and fragment the remaining habitat.

The danger therefore extends beyond the immediate loss of trees. Repeated fires can gradually change the structure of an ecosystem, making it more difficult for native forest species to return.

Why Hotspot Numbers Do Not Tell the Whole Story

One important lesson from the current Indonesian fire season is that satellite hotspot numbers must be interpreted carefully.

Satellites such as NASA's MODIS and VIIRS instruments are extremely valuable for monitoring wildfires. They can identify thermal anomalies and help authorities locate areas that require attention.

However, satellites have limitations. Thick smoke, clouds, forest vegetation and underground peat combustion can make fires harder to detect from space.

This is especially important for peatlands, where fires may smolder underground and remain difficult to detect until they emerge again.

As a result, a temporary decline in detected hotspots should not automatically be interpreted as the end of the wildfire threat.

Indonesia Continues Monitoring High-Risk Areas

Indonesia's authorities continue to monitor fire-prone provinces and respond to hotspots detected by satellite systems.

Central Kalimantan and other parts of Indonesian Borneo have experienced significant fire pressure during dry periods. Sumatra has also historically been highly vulnerable because of extensive peatlands and land-use changes.

The figures can change rapidly as weather conditions shift. A few days of rainfall may reduce surface fire activity, while renewed dry weather can quickly increase the risk.

The challenge is particularly difficult in remote landscapes where access to water, roads and firefighting equipment can be limited.

Smoke Creates a Regional Environmental Problem

Indonesia's wildfires can also affect neighbouring countries. Smoke from fires in Sumatra and Borneo can travel across national borders, creating episodes of haze in parts of Southeast Asia.

Malaysia and Singapore have experienced smoke impacts during major Indonesian fire seasons in the past, demonstrating the regional nature of the problem.

This illustrates the interconnected nature of Southeast Asian ecosystems. A fire that begins in one landscape can affect atmospheric conditions hundreds of kilometres away.

The environmental costs therefore include more than burned land. Smoke can reduce visibility, disrupt outdoor activities, affect wildlife and ecosystems, and create serious air-quality challenges for communities.

What Can Reduce Indonesia's Wildfire Risk?

Long-term wildfire prevention requires more than emergency response. Several measures can reduce the vulnerability of Indonesia's landscapes.

• Protect natural peatlands: Intact wetlands should be kept wet and protected from unnecessary drainage.
• Restore degraded peat: Blocking drainage canals and restoring natural water levels can make peat less flammable.
• Improve early warning systems: Satellite monitoring combined with ground observations can help authorities detect fires earlier.
• Strengthen local fire prevention: Communities need resources, training and equipment to respond before small fires become large disasters.
• Reduce destructive land-use practices: Forest and peatland conversion can increase fire vulnerability, especially during drought.
• Prepare for extreme climate conditions: Strong El Niño events require earlier and more aggressive fire-prevention measures.

Scientific research provides evidence that restoration can work. Studies of Indonesian peatlands have found that interventions such as canal blocking and maintaining higher groundwater levels can contribute to lower fire risk under certain climate conditions.

What This Means for Nature in 2026

The Indonesian wildfire crisis is a warning about the vulnerability of tropical ecosystems under increasingly difficult climate conditions.

Forests that once remained naturally humid can become highly vulnerable after drainage and land-use changes. A strong climate event can then transform that vulnerability into a major wildfire crisis.

The current situation also demonstrates why protecting nature before a disaster occurs is often more effective than trying to repair the damage afterward.

Healthy peatlands provide multiple benefits. They store carbon, regulate water, support biodiversity and help maintain ecological stability. Destroying or drying them creates a cycle in which future fires become easier to start and harder to control.

Can Indonesia Prevent Another Major Fire Disaster?

Indonesia has learned important lessons from previous wildfire crises, particularly the catastrophic 2015 season. Restoration programs, satellite monitoring and stronger fire-response systems have improved the country's ability to identify and control fires.

But the scale and intensity of recent fire activity show that continued investment in prevention remains essential.

The immediate priority is to control active fires and prevent underground peat fires from spreading. The longer-term challenge is to restore damaged wetlands, protect remaining forests and make land management more resilient to drought.

The current wildfire emergency should therefore be viewed not only as a disaster-response problem but also as a nature conservation and climate resilience challenge.

Frequently Asked Questions

Why are Indonesia's peatland fires so difficult to extinguish?

Peat fires can burn underground through dry organic soil. They may produce little visible flame while continuing to smolder below the surface, allowing fires to return after appearing to be extinguished.

How does El Niño affect Indonesian wildfires?

El Niño can reduce rainfall and increase drought conditions across parts of Indonesia. Drier vegetation and peat become more vulnerable to ignition and fire spread.

Which ecosystems are most threatened?

Peatlands, tropical forests and wildlife habitats in fire-prone areas of Sumatra and Kalimantan are among the ecosystems facing significant risks.

Can peatland restoration reduce wildfires?

Yes. Scientific research indicates that restoration methods such as canal blocking and maintaining higher groundwater levels can reduce fire risk under some conditions.

Why are Indonesian wildfires important globally?

Large tropical fires release greenhouse gases and air pollutants, destroy biodiversity and can produce smoke that travels across national borders. Their effects therefore extend far beyond the immediate burned area.

Conclusion

Indonesia's 2026 wildfire season is a major warning for nature conservation. The combination of drought, El Niño, degraded peatlands and forest pressure has created conditions in which fires can spread rapidly and continue underground.

The recent decline in some hotspot measurements should not create a false sense of security. As Reuters reported, environmental groups are urging Indonesia to remain vigilant because dry peat can reignite while hot and dry conditions persist.

The most effective solution is a combination of immediate fire suppression and long-term ecosystem protection. Keeping peatlands wet, restoring damaged landscapes, protecting tropical forests and improving early-warning systems can reduce the risk of future disasters.

For Indonesia's forests and wildlife, the stakes are enormous. The country's tropical ecosystems are not only home to extraordinary biodiversity but also provide vital climate and water-regulation services. Protecting them now could determine how resilient these landscapes remain in the years ahead.

Sources and Similar Articles

Reuters: Indonesia must keep its guard up against wildfire despite a drop in hotspots.

NASA Earth Observatory: Indonesia wildfire and peatland fire monitoring.

Geophysical Research Letters: Research on tropical peatland restoration and fire occurrence.

Indonesia Ministry of Forestry: National wildfire and hotspot monitoring.

Copernicus Atmosphere Monitoring Service: Global wildfire emissions and atmospheric monitoring.