Scientists use gamma rays to predict which trees will die

AI Insight

Scientists are using airborne gamma ray sensors to detect underground soil moisture levels, which can help predict when trees are at risk of dying during droughts. The gamma ray detection method measures naturally occurring radiation from soil minerals, with readings that vary based on water content since water blocks gamma rays. This technique allows researchers to map soil moisture across large forested areas from aircraft, providing early warning signs of drought stress before trees show visible symptoms.

Why it matters

This technology could enable forest managers to identify vulnerable areas before widespread tree death occurs, potentially allowing for preventive interventions during droughts. The airborne monitoring approach offers a faster and more comprehensive way to assess forest health across large regions compared to ground-based measurements.