树皮中的微生物消耗气候气体

But they also soak up other gases implicated in climate change through microbes in their bark. The tree bark microbes feast on hydrogen, methane and carbon monoxide, researchers report in Science. Methane is a greenhouse gas that is 28 times as potent as carbon diox- ide over a 100-year period and responsible for 30 percent of human-caused global warming. CO, which is lethal to humans, and hydrogen enhance global warming indirectly by helping methane persist longer in the atmosphere. Getting rid of these gases “is a hidden benefit of trees that we previously didn’t realize was happening,” says biogeo- chemist Luke Jeffrey of Southern Cross University in Lismore, Australia. L. …