"A new study finds a large, previously unknown contribution to climate change through human conversion of peatlands for agriculture".
"Long before the era of fossil fuels, humans may have triggered a massive but mysterious “carbon bomb” lurking beneath the Earth’s surface, a new scientific study suggests. If the finding is correct, it would mean that we have been neglecting a major human contribution to global warming — one whose legacy continues.
The researchers, from France’s Laboratory of Climate and Environmental Sciences and several other institutions across the globe, suggest that beginning well before the industrial era, the mass conversion of carbon-rich peatlands for agriculture could have added over 250 billion tons of carbon dioxide to the atmosphere. That’s the equivalent of more than seven years of current emissions from the burning of fossil fuels for energy.
“Globally [peatlands] are only 3 percent of the land surface but store about 30 percent of the global soil carbon,” said Chunjing Qiu, a researcher at the laboratory, a joint institution supported by French government research bodies and the Versailles Saint-Quentin University, and the first author of the study published Friday in the journal Science Advances."
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