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Half of global methane emissions come from aquatic ecosystems – much of this is human-made

Huge implications for climate policy as new study confirms truth about land sink

Land ecosystems becoming less efficient at absorbing CO2: Study

Land ecosystems becoming less efficient at absorbing CO2: Study Researchers have identified an unsettling trend — as levels of carbon dioxide (CO2) in the atmosphere increase, 86 per cent of land ecosystems globally are becoming progressively less efficient at absorbing New York: Researchers have identified an unsettling trend — as levels of carbon dioxide (CO2) in the atmosphere increase, 86 per cent of land ecosystems globally are becoming progressively less efficient at absorbing. Because CO2 is a main ingredient that plants need to grow, elevated concentrations of it cause an increase in photosynthesis, and consequently, plant growth — a phenomenon aptly referred to as the CO2 fertilization effect, or CFE. CFE is considered a key factor in the response of vegetation to rising atmospheric CO2 as well as an important mechanism for removing this potent greenhouse gas from our atmosphere — but that may be changing.

Land ecosystems are becoming less efficient at absorbing CO2

 E-Mail Land ecosystems currently play a key role in mitigating climate change. The more carbon dioxide (CO2) plants and trees absorb during photosynthesis, the process they use to make food, the less CO2 remains trapped in the atmosphere where it can cause temperatures to rise. But scientists have identified an unsettling trend - as levels of CO2 in the atmosphere increase, 86 percent of land ecosystems globally are becoming progressively less efficient at absorbing it. Because CO2 is a main ingredient that plants need to grow, elevated concentrations of it cause an increase in photosynthesis, and consequently, plant growth - a phenomenon aptly referred to as the CO2 fertilization effect, or CFE. CFE is considered a key factor in the response of vegetation to rising atmospheric CO2 as well as an important mechanism for removing this potent greenhouse gas from our atmosphere - but that may be changing.