Older Trees Absorb More Carbon

The Dirt

oldtree
Humans’ growth spurts stop by late adolescence, but trees accelerate their growth and get bigger as they age. According to a global study by 38 international researchers published in Nature, these findings could have implications for how the world’s forests are managed to contain the ill-effects of climate change.

Nate Stephenson, the study’s lead author and a forest ecologist with the U.S. Geological Survey (USGS), said: “This finding contradicts the usual assumption that tree growth eventually declines as trees get older and bigger. It also means that big, old trees are better at absorbing carbon from the atmosphere than has been commonly assumed.”

Stephenson added, “in human terms, it is as if our growth just keeps accelerating after adolescence, instead of slowing down. By that measure, humans could weigh half a ton by middle age, and well over a ton at retirement.”

According to the USGS, a global…

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