Dual effect of precipitation redistribution on net ecosystem CO2 exchange of a coastal wetland in the Yellow River Delta
Chu, Xiaojing; Han, Guangxuan; Xing, Qinghui; Xia, Jianyang; Sun, Baoyu; Yu, Junbao; Li, Dejun
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
2018-02-15
Volume249Pages:286-296
KeywordPrecipitation redistribution Net ecosystem CO2 exchange Salt stress Waterlogged stress Coastal wetland
MOST Discipline CatalogueAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
DOI10.1016/j.agrformet.2017.11.002
Contribution Rank[Chu, Xiaojing; Han, Guangxuan; Xing, Qinghui; Sun, Baoyu] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China; [Chu, Xiaojing; Xing, Qinghui; Sun, Baoyu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Xia, Jianyang] East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China; [Yu, Junbao] Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China; [Li, Dejun] Chinese Acad Sci, Inst Subtrop Agr, Changsha 410215, Hunan, Peoples R China
Department海岸带环境过程实验室
AbstractHydrological regime is crucial in determining the carbon dioxide (CO2) exchange between the atmosphere and wetlands. Seasonal redistribution of precipitation is one featured hydrological regime shift, but its impacts on ecosystem CO2 exchange in coastal wetlands remain unclear. Here, based on the eddy-covariance technique, we examined how the net ecosystem CO2 exchange (NEE) in a coastal wetland of Yellow River Delta in China differed between two years (2012 and 2013) with contrasting seasonal distribution of precipitation. The ecosystem absorbed more CO2 during the growing stage in 2013 (-268.5 g C m(-2)) than 2012 (-174.7 g C m(-2)). This difference resulted from higher NEE in the fast and middle growth stages with different reasons. In the fast growth stage, the higher mean daily NEE occurred due to more precipitation coupled with lower salt stress in 2013 (-6.3 g CO2 m(-2) day(-1)) compared to that in 2012 (-2.2 g CO2 m(-2) day(-1)). During the middle growth stage, the mean daily NEE in 2013 (-4.2 g CO2 m(-2) day(-1)) was significantly higher than that in 2012 (-1.1 g CO2 m(-2) day(-1)) because the ecosystem in 2012 suffered more waterlogged stress. This dual effect of precipitation distribution on vegetation photosynthesis was also observed in a field manipulation experiment at the same site. Our results indicated that the redistribution of precipitation among seasons would play a critical role in regulating ecosystem CO2 exchange in the coastal wetland. More research on the associated changes between dynamics of soil hydrology and salinity could promote the accuracy of the carbon-budget estimates in coastal wetlands.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordCARBON-DIOXIDE ; TERRESTRIAL ECOSYSTEMS ; WATER AVAILABILITY ; DROUGHT ; IMPACT ; MARSH ; RESPIRATION ; TEMPERATURE ; DYNAMICS ; VEGETATION
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000424180100024
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24242
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_滨海湿地实验室
中科院海岸带环境过程与生态修复重点实验室
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China;
4.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China;
5.Chinese Acad Sci, Inst Subtrop Agr, Changsha 410215, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Chu, Xiaojing,Han, Guangxuan,Xing, Qinghui,et al. Dual effect of precipitation redistribution on net ecosystem CO2 exchange of a coastal wetland in the Yellow River Delta[J]. AGRICULTURAL AND FOREST METEOROLOGY,2018,249:286-296.
APA Chu, Xiaojing.,Han, Guangxuan.,Xing, Qinghui.,Xia, Jianyang.,Sun, Baoyu.,...&Li, Dejun.(2018).Dual effect of precipitation redistribution on net ecosystem CO2 exchange of a coastal wetland in the Yellow River Delta.AGRICULTURAL AND FOREST METEOROLOGY,249,286-296.
MLA Chu, Xiaojing,et al."Dual effect of precipitation redistribution on net ecosystem CO2 exchange of a coastal wetland in the Yellow River Delta".AGRICULTURAL AND FOREST METEOROLOGY 249(2018):286-296.
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