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Global atmospheric methane uptake by upland tree woody surfaces | Nature

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Studies of in situ woody surface methane exchange in upland tropical, temperate and boreal forest trees find that methane uptake can result in a net tree methane sink that is globally significant and demonstrates an additional climate benefit provided by trees.

Download PDF Subjects Carbon cycle Forest ecology Abstract Methane is an important greenhouse gas 1 , but the role of trees in the methane budget remains uncertain 2 . Although it has been shown that wetland and some upland trees can emit soil-derived methane at the stem base 3 , 4 , it has also been suggested that upland trees can serve as a net sink for atmospheric methane 5 , 6 . Here we examine in situ woody surface methane exchange of upland tropical, temperate and boreal forest trees. We find that methane uptake on woody surfaces, in particular at and above about 2 m above the forest flo

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