Dual effect of precipitation redistribution on net ecosystem CO2 exchange of a coastal wetland in the Yellow River Delta
文献类型：期刊论文
| 作者 | Chu, Xiaojing; Han, Guangxuan ; Xing, Qinghui; Xia, Jianyang; Sun, Baoyu; Yu, Junbao; Li, Dejun
|
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 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 |
| ISSN号 | 0168-1923 |
| 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 |
| 文献子类 | Article |
| 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. |
| WOS关键词 | CARBON-DIOXIDE ; TERRESTRIAL ECOSYSTEMS ; WATER AVAILABILITY ; DROUGHT ; IMPACT ; MARSH ; RESPIRATION ; TEMPERATURE ; DYNAMICS ; VEGETATION |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000424180100024 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/24242]  |
| 专题 | 烟台海岸带研究所_近岸生态与环境实验室 烟台海岸带研究所_滨海湿地实验室 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 |
| 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.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China; 3.East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, 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. |
入库方式： OAI收割
来源：烟台海岸带研究所
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