Boxes of Cores from Forest Trees (IMAGE)

University of Arizona

Boxes of Cores from Forest Trees

Caption

A treasure trove of data about tree growth in the US West was found in these boxes, each of which contained 500 to 800 cores from individual forest trees. The cores are from the U.S. Forest Service Forest Inventory and Analysis program. Once measured and analyzed, the annual growth rings in these cores revealed that the growth rate of trees in Southwest forest may decline as much as 75 percent by 2100.

Credit

John D. Shaw, US Forest Service

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