Quality of Sediment Organic Matter Determines the Intertidal N2O Response to Global Warming

doi:10.1029/2021JG006572

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 海岸带生物学与生物资源利用重点实验室

	Quality of Sediment Organic Matter Determines the Intertidal N2O Response to Global Warming
	Chen, Shu 5; Wang, Dongqi 4,5; Yu, Zhongjie 3; Nie, Jiaqin 5; Chen, Jie 4; Li, Yangjie 2; Zhang, Xiaoli 1; Chen, Zhenlou 5
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
	2022-02-01
卷号	127 期号:2 页码:17
关键词	intertidal sediment nitrous oxide organic matter warming climate change
ISSN号	2169-8953
DOI	10.1029/2021JG006572
通讯作者	Wang, Dongqi(dqwang@geo.ecnu.edu.cn)
英文摘要	Estuaries and coasts are areas of intense biogeochemical cycling and are sensitive to global climate change. However, the effect of temperature increase on the emissions of the powerful greenhouse gas nitrous oxide (N2O) in different estuarine and coastal areas is still uncertain. In this study, we used laboratory incubation experiments to investigate increasing temperatures (12, 25, and 35 degrees C) and tidal effects on N2O fluxes in intertidal sediments from the East China coast (ECC). Overall, the ECC acts as a net source of atmospheric N2O and exhibited considerable spatial variability over three orders of magnitude (from -0.17 to 8.4 mu mol m(-2) h(-1)). The warming promoted N2O emissions in most intertidal areas, while reducing N2O emissions at some sampling sites. In addition, the overall effect of flooding on N2O emissions changed from a positive to a negative effect with increasing temperature. By combining the sediment properties of all the sampling sites, we found that large differences in N2O emissions at the same amended floodwater nitrogen concentration were due to the quality and quantity of sediment organic matter. Sediment derived mainly from marine sources emitted more N2O than sediment derived from terrestrial sources. This suggests that the mangroves, salt marshes, and intertidal zones of estuaries have a mitigating effect on N2O emissions due to their elevated terrestrial organic matter inputs. This research improves our understanding of the impact of future global climatic changes on intertidal N2O fluxes, which can inform future studies and models and can be used to constrain intertidal N2O emissions.
WOS关键词	NITROUS-OXIDE PRODUCTION ; AMMONIA-OXIDIZING ARCHAEA ; SUBTROPICAL FRESH-WATER ; DENITRIFICATION RATES ; SALINITY GRADIENT ; METHANE EMISSIONS ; RIVER ESTUARY ; SALT-MARSH ; FLUXES ; MANGROVE
WOS研究方向	Environmental Sciences & Ecology ; Geology
语种	英语
WOS记录号	WOS:000763471300007
资助机构	National Natural Science Foundation of China ; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/31405]
专题	海岸带生物学与生物资源利用重点实验室
通讯作者	Wang, Dongqi
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China 2.Second Inst Oceanog, Key Lab Marine Ecosyst & Biogeochem, State Ocean Adm, Hangzhou, Peoples R China 3.Univ Illinois, Dept Nat Resources & Environm Sci, Champaign, IL USA 4.Shanghai Key Lab Urban Ecol Proc & Ecorestorat, Shanghai, Peoples R China 5.East China Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Geog Informat Sci, Shanghai, Peoples R China
推荐引用方式 GB/T 7714	Chen, Shu,Wang, Dongqi,Yu, Zhongjie,et al. Quality of Sediment Organic Matter Determines the Intertidal N2O Response to Global Warming[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2022,127(2):17.
APA	Chen, Shu.,Wang, Dongqi.,Yu, Zhongjie.,Nie, Jiaqin.,Chen, Jie.,...&Chen, Zhenlou.(2022).Quality of Sediment Organic Matter Determines the Intertidal N2O Response to Global Warming.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,127(2),17.
MLA	Chen, Shu,et al."Quality of Sediment Organic Matter Determines the Intertidal N2O Response to Global Warming".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 127.2(2022):17.