Inundation depth affects ecosystem CO(2)and CH(4)exchange by changing plant productivity in a freshwater wetland in the Yellow River Estuary
Zhao, Mingliang1,2,3; Han, Guangxuan2,3; Wu, Haitao4; Song, Weimin2,3; Chu, Xiaojing2,3; Li, Juanyong2,3; Qu, Wendi2,3; Li, Xinge2,3; Wei, Siyu2,3; Eller, Franziska5; Jiang, Changsheng1
Source PublicationPLANT AND SOIL
ISSN0032-079X
2020-07-08
Pages16
KeywordInundation depth center dot Plant productivity center dot Net ecosystem CO(2)exchange center dot Ecosystem respiration center dot Ecosystem CH(4)fluxes
DOI10.1007/s11104-020-04612-2
Corresponding AuthorJiang, Changsheng(jiangcs@126.com)
AbstractAims Climate change (extreme rainfall) and water management activities have led to variation in hydrological regimes, especially inundation, which may alter the function and structure of wetlands as well as wetland-atmosphere carbon (C) exchange. However, the degree to which different inundation depths (standing water depth above the soil surface) affect ecosystem CH(4)fluxes, ecosystem respiration (R-eco) and net ecosystem CO(2)exchange (NEE) remains uncertain in wetland ecosystems. Methods We conducted a field inundation depth manipulation experiment (no inundation, i.e. only natural precipitation; 0, water-saturated; 5, 10, 20, 30 and 40 cm inundation depth) in a freshwater wetland of the Yellow River Delta, China. The CH(4)fluxes, R(eco)and NEE were measured with a static chamber technique during the growing seasons (May-October) of 2018 and 2019. Results Inundation depth significantly increased plant shoot density, above-water level leaf area index (WLAI), above-water level plant shoot height (WHeight), aboveground and belowground biomass of the dominant grassPhragmites australisin both years. Meanwhile, inundation depth increased the CH(4)fluxes, R-eco(except for 0 cm) and NEE compared to no inundation, which could be attributed partly to the increased plant productivity (shoot density, WLAI, WHeight, biomass). Additionally, the CH(4)fluxes, R(eco)or NEE exhibited parabolic responses to inundation depth. Furthermore, global warming potential (GWP) was significantly decreased under different inundation depths during the growing season, especially from 5 to 40 cm inundation depth in 2019. NEE was the largest contributor to the seasonal GWP, which indicates that the inundated wetlands are a net sink of C and have a cooling climate effect in the Yellow River Delta. Conclusions Inundation depth substantially affects the magnitude of CH(4)fluxes, R(eco)and NEE, which were correlated with altered plant traits in wetland ecosystems. Inundation depth could mitigate greenhouse gas emissions in theP. australiswetlands during the growing season. Inundation depth-induced ecosystem C exchange should be considered when estimating C sequestration capacity of wetlands due to climate change and water management activities, which will assist to accurately predict the impact of hydrological regimes on C cycles in future climate change scenarios.
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; National Nature Science Foundation of China project ; Forestry Science and Technology Innovation Project of Shandong Province ; Chongqing Research Program of Basic Research and Frontier Technology ; Yellow River Delta Ecological Research Station of Coastal Wetland, the Chinese Academy of Sciences
Indexed BySCI
Language英语
WOS KeywordGREENHOUSE-GAS EMISSIONS ; METHANE EMISSIONS ; PHRAGMITES-AUSTRALIS ; CO2 EXCHANGE ; TABLE FLUCTUATIONS ; COASTAL WETLAND ; SANJIANG PLAIN ; CARBON-DIOXIDE ; N2O EMISSIONS ; SALT-MARSH
WOS Research AreaAgriculture ; Plant Sciences
WOS IDWOS:000546523200002
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/28657
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
Corresponding AuthorJiang, Changsheng
Affiliation1.Southwest Univ, Coll Resources & Environm, State Cultivat Base Ecoagr Southwest Mt Land, Chongqing 400715, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China
3.YICCAS, Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China
4.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China
5.Aarhus Univ, Dept Biosci, Aquat Biol, Ole Worms Alle 1, DK-8000 Aarhus C, Denmark
Recommended Citation
GB/T 7714
Zhao, Mingliang,Han, Guangxuan,Wu, Haitao,et al. Inundation depth affects ecosystem CO(2)and CH(4)exchange by changing plant productivity in a freshwater wetland in the Yellow River Estuary[J]. PLANT AND SOIL,2020:16.
APA Zhao, Mingliang.,Han, Guangxuan.,Wu, Haitao.,Song, Weimin.,Chu, Xiaojing.,...&Jiang, Changsheng.(2020).Inundation depth affects ecosystem CO(2)and CH(4)exchange by changing plant productivity in a freshwater wetland in the Yellow River Estuary.PLANT AND SOIL,16.
MLA Zhao, Mingliang,et al."Inundation depth affects ecosystem CO(2)and CH(4)exchange by changing plant productivity in a freshwater wetland in the Yellow River Estuary".PLANT AND SOIL (2020):16.
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