Which of the following is a technique to improve forest health?

Prescribed burns to manage underbrush is a key technique for improving forest health. This method involves intentionally setting controlled fires to reduce the accumulation of dead plant material, facilitate nutrient cycling, and control invasive species. By managing underbrush, prescribed burns can enhance habitat for wildlife and promote the growth of desirable plant species, ultimately leading to a more diverse and robust ecosystem.

This technique also reduces the risk of uncontrolled wildfires, which can have devastating effects on forest health. In contrast, practices such as clear-cutting, introducing non-native species, or stopping all forms of natural growth can lead to degraded ecosystems, loss of biodiversity, and increased vulnerability to pests and diseases. Therefore, using prescribed burns strategically supports the overall health and resilience of forest ecosystems.