The study suggests that thousands of deaths could be prevented over the next three decades across Indonesia, Malaysia and Singapore through improved land management to reduce the number and extent of peatland fires. The fires contribute to dangerous levels of particulate matter harmful to human health. Air quality near large population centres could improve significantly, saving lives, the study found.
Researchers looked at data from models of varying land use and land cover, including emissions due to fires. Taking into account such factors as population exposure, smoke distribution and health impacts, the researchers were able to determine the best strategies to manage and protect land while also improving human health outcomes.
They concluded that protecting peatlands alone could prevent about 24,000 deaths per year across the three countries.
As part of this research, a case study in Indonesia showed that thousands of people could avoid serious health impacts each year if the Indonesian Peatland Restoration Agency sites are all rewetted and restored. These sites cover about 2 million hectares—about 7.5 per cent of Indonesia’s peatlands—and were deemed critical for restoration after the 2015 Indonesian fires.
The study also developed an online software tool to allow policymakers and decision makers to look at public health outcomes associated with different land use decisions.
Peatlands are priority ecosystems to prevent burning as they emit more smoke than other burning biomes. Protecting peatlands in Indonesia, Malaysia and Singapore could reduce fire emissions and avert 66 per cent of excess mortality, the study says.
The threats to, and benefits of, peatland conservation
There are many threats to peatlands in Indonesia and Malaysia since land is being cleared for crops like oil palm. Singapore, meanwhile, is repeatedly affected by fire emissions from peatlands in Sumatra, and to a lesser extent in Kalimantan.
“With global heating exacerbating wildfires, particularly across Asia and Africa, protecting peatlands will become increasingly important for climate change and flood mitigation and for conserving biodiversity, water quality, and also human health,” says UN Environment Programme (UNEP) peatlands expert Dianna Kopansky.
“One of the main objectives of UNEP’s Chemical, Waste and Air Quality programme of work is to minimize risks to human health and the environment through improved management policies,” she adds.
“Peatlands provide important services across biomes and are beginning to gain attention as a nature-based ‘super’ solution,” says Kopansky. “As the importance of nature gains traction, the future of peatlands can be bright, and they can be used as a tool to help people all over the world. Restoring peatlands is relatively cheap and easy, especially when it helps prevent the need to treat those who get sick due to the proximity of a peat fire.”
The UN Decade on Ecosystem Restoration 2021–2030, led by the UN Environment Programme, the Food and Agriculture Organization of the United Nations and partners such as Afr100, the Global Landscapes Forum, and the International Union for the Conservation of Nature, covers terrestrial as well as coastal and marine ecosystems. A global call to action, it will draw together political support, scientific research and financial muscle to massively scale up restoration. Help us shape the Decade.
Are you aware of how the environment can impact your health? For the next few months, UNEP is running a series on environmental health literacy, informing our audiences on how the environment can affect their health in both a positive and a negative manner. Stay tuned on our website and social media channels to learn about Your Healthy Environment and the linkages between a healthy environment and healthy people.
The BreatheLife network of cities is led by UNEP, the World Health Organization and the Climate and Clean Air Coalition.