Terrigenous organic carbon drives methane dynamics in cascade reservoirs in the upper Yangtze China
文献类型：期刊论文
| 作者 | Zhang, Yuanyuan1,2; Su, Youheng2,3; Li, Zhe1,2 ; Guo, Shuhui4; Lu, Lunhui1,2; Zhang, Bin2; Qin, Yu3
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| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2022-07-01 |
| 卷号 | 219页码:12 |
| 关键词 | Methane dynamics Terrigenous POC Carbon footprint Cascade reservoirs Hydropower production |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2022.118546 |
| 通讯作者 | Li, Zhe(lizhe@cigit.ac.cn) |
| 英文摘要 | Methane (CH4) emissions from freshwaters to the atmosphere have a profound impact on global atmospheric greenhouse gas (GHG) concentrations. Anthropogenic footprints such as dam construction and reservoir operation significantly changed the fate and transport of CH4 in freshwaters. The source of particulate organic carbon (POC) in reservoirs is a critical factor controlling CH4 production and emissions. However, little is known of how reservoir operation mediates the transport of POC and regulates CH4 accumulation in cascade hydroelectric reservoirs. Here, spatial and temporal variations in POC and CH4 were explored in the Xiluodu (XLD) and Xiangjiaba (XJB) reservoirs which are deep valley cascade reservoirs located in the main channel of the upper Yangtze River. Based on the delta 13C-POC and N/C mole ratio of particulate organic matter, the results of multiendmember stable isotope mixing models by a Bayesian model showed that terrigenous POC and autochthonous POC accounted for approximately 55% +/- 18% and 43% +/- 19% (SD, n = 179) of POC, respectively. Together with other hydrological and environmental parameters, we found that the input of terrigenous POC was dominantly influenced by water level variations and flow regulation due to reservoir operation. The cumulative effect of POC caused by cascade dams was not apparent. Terrigenous POC were more likely to drive CH4 accumulation in our study. Evident low level of CH4 in both reservoirs were likely affected by low sedimentation of POC and microbial CH4 oxidation. We hope our study could provide a conceptual framework for further modeling of CH4 dynamics in cascade reservoirs. |
| 资助项目 | National Natural Science Foundation of China[51861125204] ; National Natural Science Foundation of China[51679226] ; National Natural Science Foundation of China[42107273] ; Chinese Academy of Sciences[cstc2020jcyj- jqX0010] ; Chongqing Natural Science Funds for Distinguished Young Scientists ; China Three Gorges Corporation |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000803703800005 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15949]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Li, Zhe |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Chongqing Sch, Chongqing 400714, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Environm, Chongqing 400714, Peoples R China 3.Chongqing Jiaotong Univ, Coll River & Ocean Engn, Chongqing 400074, Peoples R China 4.Minist Ecol & Environm Peoples Republ China, Foreign Environm Cooperat Ctr, Beijing 100035, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yuanyuan,Su, Youheng,Li, Zhe,et al. Terrigenous organic carbon drives methane dynamics in cascade reservoirs in the upper Yangtze China[J]. WATER RESEARCH,2022,219:12. |
| APA | Zhang, Yuanyuan.,Su, Youheng.,Li, Zhe.,Guo, Shuhui.,Lu, Lunhui.,...&Qin, Yu.(2022).Terrigenous organic carbon drives methane dynamics in cascade reservoirs in the upper Yangtze China.WATER RESEARCH,219,12. |
| MLA | Zhang, Yuanyuan,et al."Terrigenous organic carbon drives methane dynamics in cascade reservoirs in the upper Yangtze China".WATER RESEARCH 219(2022):12. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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