Study finds Amazon trees a major source of methane emissions

By mmillikin A study by an international team of researchers has found that trees growing in the Amazon river floodplains emit 15.1 ± 1.8 to 21.2 ± 2.5 teragrams (million metric tons) of methane (CH4) per year. This is in addition to the 20.5 ± 5.3 teragrams a year emitted regionally from other sources. Their study is published in the journal Nature.

The “exceptionally large” emissions from Amazon floodplain trees alone are equivalent in size to the entire Arctic CH4 source and account for about 15% of the global wetland CH4 emission.

Wetlands are the single largest global source of atmospheric methane (CH4), emitting an estimated 160–210 Tg of CH4

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