Figure 6.2

U.S. Forest Service Pacific Southwest Research Station
David L. Peterson

This figure appears in chapter 6 of the Impacts, Risks, and Adaptation in the United States: The Fourth National Climate Assessment, Volume II report.

A five-year drought in California (2011–2016) led to western pine beetle outbreaks, which contributed to the mortality of 129 million trees. As a result, the structure and function of these forests are changing rapidly. Prolonged droughts are expected to become more common as the climate continues to warm, increasing stress on lower-elevation tree species. Photo credit: Marc Meyer, U.S. Forest Service.

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This figure was created on May 23, 2017.

This figure was submitted on November 30, 2018.

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