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Coastal vegetation and estuaries are collectively a greenhouse gas sink

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Title
Coastal vegetation and estuaries are collectively a greenhouse gas sink
Author(s)
Rosentreter, Judith A.; Laruelle, Goulven G.; Bange, Hermann W.; Bianchi, Thomas S.; Busecke, Julius J. M.; Cai, Wei-Jun; Eyre, Bradley D.; Forbrich, Inke; Eun Young Kwon; Maavara, Taylor; Moosdorf, Nils; Najjar, Raymond G.; Sarma, V.V.S.S.; Van Dam, Bryce; Regnier, Pierre
Publication Date
2023-06
Journal
Nature Climate Change, v.13, no.6, pp.579 - 587
Publisher
Nature Research
Abstract
Coastal ecosystems release or absorb carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), but the net effects of these ecosystems on the radiative balance remain unknown. We compiled a dataset of observations from 738 sites from studies published between 1975 and 2020 to quantify CO2, CH4 and N2O fluxes in estuaries and coastal vegetation in ten global regions. We show that the CO2-equivalent (CO2e) uptake by coastal vegetation is decreased by 23–27% due to estuarine CO2e outgassing, resulting in a global median net sink of 391 or 444 TgCO2e yr−1 using the 20- or 100-year global warming potentials, respectively. Globally, total coastal CH4 and N2O emissions decrease the coastal CO2 sink by 9–20%. Southeast Asia, North America and Africa are critical regional hotspots of GHG sinks. Understanding these hotspots can guide our efforts to strengthen coastal CO2 uptake while effectively reducing CH4 and N2O emissions. © 2023, The Author(s), under exclusive licence to Springer Nature Limited.
URI
https://pr.ibs.re.kr/handle/8788114/13818
DOI
10.1038/s41558-023-01682-9
ISSN
1758-678X
Appears in Collections:
Center for Climate Physics(기후물리 연구단) > 1. Journal Papers (저널논문)
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