Indonesia's Peatland Fires Prove Difficult to Extinguish, Causing Widespread Haze

Wildfires have been burning across parts of Indonesia for weeks, releasing smoke that has spread into neighboring Malaysia, Singapore, and the Philippines. The fires, particularly those in peatland areas, are proving exceptionally difficult to battle and are the primary cause of the toxic haze affecting the region.

Peatlands are organic soils formed over thousands of years from dead plant matter that has accumulated in wet conditions. This material is highly combustible, especially when dried out. Once ignited, peat fires can burn underground for extended periods, making them challenging to locate and extinguish. The deep, smoldering fires can continue to burn for months, even during rainy seasons, until the peat is completely consumed or significant rainfall saturates the ground.

Indonesia experiences seasonal dry periods, which exacerbate the risk of fires. Human activities, including the use of fire for land clearing for agriculture, often initiate these fires. However, the underlying conditions of the peatlands allow them to spread and persist with an intensity that is hard to control. The resulting smoke contains a cocktail of pollutants, including fine particulate matter, carbon monoxide, and other harmful compounds, which pose serious health risks to populations exposed to the haze. The transboundary nature of the smoke means that air quality alerts and health advisories are issued across multiple countries, highlighting the regional impact of these fires.