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Inundation depth stimulates plant-mediated CH4 emissions by increasing ecosystem carbon uptake and plant height in an estuarine wetland

文献类型：期刊论文

作者Zhao, Mingliang3,4,5,6; Li, Peiguang3,4,5,6; Song, Weimin3,4,5,6; Chu, Xiaojing3,4,5,6; Eller, Franziska2; Wang, Xiaojie3,4,5,6; Liu, Jingtao1; Xiao, Leilei3,4,5,6; Wei, Siyu3,4,5,6; Li, Xinge3,4,5,6
刊名FUNCTIONAL ECOLOGY
出版日期2023-02-01
页码15
ISSN号0269-8463
关键词estuarine wetland inundation depth net ecosystem CO2 exchange plant height plant-mediated CH4 emissions
DOI10.1111/1365-2435.14258
通讯作者Liu, Jingtao(ljteco@126.com) ; Han, Guangxuan(gxhan@yic.ac.cn)
英文摘要Plant-mediated CH4 emission is an important part of the ecosystem CH4 emission from vegetated wetlands. Inundation depth may alter the potential magnitude of CH4 releases by changing CH4 production and plant transport, but the relationships between plant-mediated CH4 emissions and inundation depth are still uncertain, especially for estuarine wetlands with changeable hydrological processes. Besides, there are conflicting results regarding the role of inundation depth in plant-mediated CH4 emissions. Here we conducted a novel inundation depth experiment (0, 5, 10, 20, 30 and 40 cm inundation depth) dominated by Phragmites australis in the Yellow River estuary, China. Soil CH4 emissions, ecosystem CH4 emissions, net ecosystem CO2 exchange (NEE), soil organic carbon (SOC) and plant traits were measured during the growing seasons of 2018, 2019 and 2020. Plant-mediated CH4 emissions were the difference between ecosystem CH4 emissions and soil CH4 emissions. The results showed that inundation depth decreased soil CH4 emissions but increased ecosystem CH4 emissions. Plant-mediated CH4 transport from Phragmites australis accounted for 99% of total ecosystem CH4 emissions under different inundation depths. Inundation depth strongly stimulated plant-mediated CH4 emission from 0 to 20 cm during the growing seasons. The increased NEE enhanced plant-mediated CH4 emissions by altering production, suggesting that carbon components derived from photosynthetic carbon input may benefit CH4 production. Additionally, the increased plant height promoted CH4 emission by regulating plant transport, indicating that plant traits may play an important role in transport of CH4. Our findings indicated that NEE and plant height play an important role in plant-mediated CH4 emissions under different inundation depths in estuarine wetland. This study also highlights that hydrological regimes and plant traits are essential for the estimation of CH4 emissions in future projections of global wetland changes. Read the free Plain Language Summary for this article on the Journal blog.
WOS关键词WATER-TABLE POSITION ; EXTREME FLOOD EVENT ; METHANE EMISSIONS ; VASCULAR PLANTS ; GAS-TRANSPORT ; JUNCUS-EFFUSUS ; SALT-MARSH ; FLUXES ; PHRAGMITES ; CO2
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000922865300001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.yic.ac.cn/handle/133337/32639]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
中国科学院黄河三角洲滨海湿地试验站
通讯作者Liu, Jingtao; Han, Guangxuan
作者单位1.Binzhou Univ, Shangdong key Lab Ecoenvironm Sci Yellow River Del, Binzhou, Peoples R China
2.Aarhus Univ, Dept Biosci, Aquat Biol, Aarhus, Denmark
3.Chinese Acad Sci, Yellow River Delta Field Observat, Dongying, Peoples R China
4.Chinese Acad Sci, Res Stn Coastal Wetland Ecosyst, Dongying, Peoples R China
5.Shandong Key Lab Coastal Environm Proc, Yantai, Peoples R China
6.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Mingliang,Li, Peiguang,Song, Weimin,et al. Inundation depth stimulates plant-mediated CH4 emissions by increasing ecosystem carbon uptake and plant height in an estuarine wetland[J]. FUNCTIONAL ECOLOGY,2023:15.
APA Zhao, Mingliang.,Li, Peiguang.,Song, Weimin.,Chu, Xiaojing.,Eller, Franziska.,...&Han, Guangxuan.(2023).Inundation depth stimulates plant-mediated CH4 emissions by increasing ecosystem carbon uptake and plant height in an estuarine wetland.FUNCTIONAL ECOLOGY,15.
MLA Zhao, Mingliang,et al."Inundation depth stimulates plant-mediated CH4 emissions by increasing ecosystem carbon uptake and plant height in an estuarine wetland".FUNCTIONAL ECOLOGY (2023):15.

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来源：烟台海岸带研究所

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