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Global Model Attributes 320 Million Annual Tree Deaths to Lightning

By feeding global lightning data into LPJ-GUESS, scientists reveal 320 million annual tree deaths with up to 1.09 billion tonnes of CO₂ released.

© Mihai Simonia via Shutterstock

Overview

  • Researchers at the Technical University of Munich developed the model to quantify lightning-induced tree mortality worldwide.
  • The simulation calculates that lightning eliminates 320 million trees annually, accounting for 2.1 percent to 2.9 percent of global plant biomass loss.
  • Biomass decay from trees killed by lightning emits between 0.77 and 1.09 billion tonnes of carbon dioxide each year.
  • Lightning-related tree deaths are most concentrated in tropical forests under current climate conditions.
  • Climate projections forecast rising lightning frequency, which is likely to increase tree mortality and shift major impacts to temperate and boreal forests.