Earth’s plants aren’t holding onto carbon as long as we thought.
A new analysis of pulses of radioactive carbon-14 from 20th-century bomb tests reveals that plants stock more carbon in short-lived tissues such as leaves than previously estimated, scientists report in the June 21 Science. That means that this carbon is probably more vulnerable to re-release to the atmosphere — potentially altering estimates of how much anthropogenic carbon the biosphere can hold, the team says.
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