The Main Drive Behind Forest Fires

forest-fireTemperatures are rising and forest fires, already larger and more frequent than the historical norm, are projected to increase dramatically with anthropogenic warming.

That’s the general consensus among scientists studying the relationship between fire activity and climate change in the Sierra Nevada. But a study released last week found an influence on past fire activity even greater than climate: human beings.

Since 1600, the way humans have used land in the Sierra has had more effect on fire behavior than climate change, said Valerie Trouet, associate professor of dendrochronology at the University of Arizona and lead coauthor of the study, published November 14 by the Proceedings of the National Academy of Sciences.

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