Carbon Cycle

Four degree temperature rise will end vegetation ‘carbon sink’

Latest climate and biosphere modelling suggests that the length of time carbon remains in vegetation during the global carbon cycle — known as ‘residence time’ — is the key “uncertainty” in predicting how Earth’s terrestrial plant life — and consequently almost all life — will respond to higher CO2 levels and global warming, say researchers.[1] Carbon will spend increasingly less time in vegetation as the negative impacts of climate change take their toll through factors such as increased drought levels — with carbon rapidly released back into the atmosphere where it will continue to add to global warming.

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