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By Healthy Forests, Healthy Communities [6],
A new study [7] from the University of California Merced shows that thinning overcrowded forests and using prescribed fire produces a wide range of benefits that reach far beyond reducing the threat of catastrophic wildfire. Researchers found that these treatments strengthen forest resilience, protect valuable ecosystem services and help avoid costly wildfire damage.
Led by post doctoral scholar Han Guo, the research team examined how thinning and prescribed fire affect carbon storage, timber resources, soil stability and air quality. They found that overstocked forests face a far higher risk of severe wildfire and that the resulting losses to these services can reach thousands of dollars per acre. By reducing excess fuels and restoring more natural forest conditions, treatments can prevent damage that would otherwise impose major costs on communities and land managers.
The study highlights that the benefits of treatment vary by landscape and intensity, underscoring the importance of planning and local knowledge. It also reinforces what many land managers already know. The combination of fire suppression and “hands-off” management have left forests dense, stressed and vulnerable to extreme fire behavior. Thinning and prescribed burning open crowded stands, reduce ladder fuels and reintroduce low intensity fire that historically maintained forest health. These actions help keep more carbon stored in living trees, protect soils from fire damage and give forests a better chance to withstand drought, insects and disease.
Active forest management is essential for reducing wildfire risk, protecting public health and safeguarding the natural resources that rural economies depend on. The UC Merced study adds to a growing body of evidence that investing in thinning and prescribed fire strengthens forests and supports cleaner air, cleaner water and stable timber supplies for years to come.