气候变化领域集成服务门户(CCPortal): Epipelagic nitrous oxide production offsets carbon sequestration by the biological pump

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DOI	10.1038/s41561-022-01090-2
	Epipelagic nitrous oxide production offsets carbon sequestration by the biological pump
	Wan, Xianhui S. S.; Sheng, Hua-Xia; Dai, Minhan; Casciotti, Karen L. L.; Church, Matthew J. J.; Zou, Wenbin; Liu, Li; Shen, Hui; Zhou, Kuanbo; Ward, Bess B. B.; Kao, Shuh-Ji
发表日期	2023
ISSN	1752-0894
EISSN	1752-0908
起始页码	29
结束页码	+
卷号	16 期号:1 页码:22
英文摘要	The removal of carbon dioxide from the atmosphere by the marine biological pump is a key regulator of Earth's climate; however, the ocean also serves as a large source of nitrous oxide, a potent greenhouse gas and ozone-depleting substance. Although biological carbon sequestration and nitrous oxide production have been individually studied in the ocean, their combined impacts on net greenhouse forcing remain uncertain. Here we show that the magnitude of nitrous oxide production in the epipelagic zone of the subtropical ocean covaries with remineralization processes and thus acts antagonistically to weaken the radiative benefit of carbon removal by the marine biological pump. Carbon and nitrogen isotope tracer incubation experiments and nitrogen isotope natural abundance data indicate enhanced biological activity promotes nitrogen recycling, leading to substantial nitrous oxide production via both oxidative and reductive pathways. These shallow-water nitrous oxide sources account for nearly half of the air-sea flux and counteract 6-27% (median 9%) of the greenhouse warming mitigation achieved by carbon export via the biological pump.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000900813100002
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272473
作者单位	Xiamen University; Princeton University; Xiamen University; Stanford University; University of Montana System; University of Montana
推荐引用方式 GB/T 7714	Wan, Xianhui S. S.,Sheng, Hua-Xia,Dai, Minhan,et al. Epipelagic nitrous oxide production offsets carbon sequestration by the biological pump[J],2023,16(1):22.
APA	Wan, Xianhui S. S..,Sheng, Hua-Xia.,Dai, Minhan.,Casciotti, Karen L. L..,Church, Matthew J. J..,...&Kao, Shuh-Ji.(2023).Epipelagic nitrous oxide production offsets carbon sequestration by the biological pump.NATURE GEOSCIENCE,16(1),22.
MLA	Wan, Xianhui S. S.,et al."Epipelagic nitrous oxide production offsets carbon sequestration by the biological pump".NATURE GEOSCIENCE 16.1(2023):22.