Dual effect of precipitation redistribution on net ecosystem CO2 exchange of a coastal wetland in the Yellow River Delta

doi:10.1016/j.agrformet.2017.11.002

YIC-IR > 中国科学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

	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
发表期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
	2018-02-15
卷号	249 页码:286-296
关键词	Precipitation redistribution Net ecosystem CO2 exchange Salt stress Waterlogged stress Coastal wetland
研究领域	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
DOI	10.1016/j.agrformet.2017.11.002
产权排序	[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
作者部门	海岸带环境过程实验室
英文摘要	Hydrological 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.
文章类型	Article
收录类别	SCI
语种	英语
关键词[WOS]	CARBON-DIOXIDE ; TERRESTRIAL ECOSYSTEMS ; WATER AVAILABILITY ; DROUGHT ; IMPACT ; MARSH ; RESPIRATION ; TEMPERATURE ; DYNAMICS ; VEGETATION
研究领域[WOS]	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000424180100024
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/24242
专题	中国科学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国科学院海岸带环境过程与生态修复重点实验室_滨海湿地实验室中国科学院海岸带环境过程与生态修复重点实验室
作者单位	1.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
推荐引用方式 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.