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Ozone and Pine Trees: Sickened by Ozone Air Pollution

Looking up at a large pine

In the Sierra, some ponderosa and Jeffrey pine trees are hundreds of years old and tower over a hundred feet in the air. Not much can kill these mighty giants. Unfortunately, these magnificent trees are sensitive to ozone air pollution. At the concentrations presently found in the Sierra, ozone can weaken one of these trees enough to trigger its eventual death.

Click on a choice:

  Sickened by Ozone

  The Damage

  Ozone Pollutants

  The New Danger

Damaged trees 

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