Headwater stream ecosystem: an important source of greenhouse gases to the atmosphere
文献类型：期刊论文
| 作者 | Li, Mingxu1; Peng, Changhui2,4; Zhang, Kerou3; Xu, Li1; Wang, Jianming1; Yang, Yan1; Li, Peng2 ; Liu, Zelin2; He, Nianpeng1
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| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2021-02-15 |
| 卷号 | 190页码:9 |
| 关键词 | Riverine GHG emissions Stream order Headwater stream oxygen level Carbon/Nitrogen input |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2020.116738 |
| 通讯作者 | Peng, Changhui(peng.changhui@uqam.ca) ; He, Nianpeng(henp@igsnrr.ac.cn) |
| 英文摘要 | Although an increasing number of reports have revealed that rivers are important sources of greenhouse gases (GHGs), the magnitude and underlying mechanism of riverine GHG emissions are still poorly understood. The global extent of the headwater stream ecosystem may represent one of the important GHG emitters. A global database of GHG measurements from 595 rivers, indicated that the concentrations of riverine GHGs continually decrease as the stream order increases. Further analysis suggested that high GHG emissions from headwater streams (Strahler stream orders of 1 to 3) could be related to the low levels of dissolved oxygen, massive terrestrially derived carbon/nitrogen inputs and large gas exchange velocity. Through a combination of the predicted river surface areas and gas transfer velocities, we estimated that globally, the rivers emit approximately 6.6 (5.5-7.8) Pg CO2, 29.5 (19.6-37.3) Tg CH4, and 0.6 (0.2-0.9) Tg N2O per year, and totally emit 7.6 (6.1-9.1) CO2 equivalent into atmosphere per year. The headwater streams contribute 72.3%, 75.5%, and 77.2% of the global riverine CO2, CH4, and N2O emissions, respectively. This study presents a systematic estimation of GHG emissions from river ecosystems worldwide and highlights the dominant role played by headwater streams in GHG evasions from global rivers. (c) 2020 Elsevier Ltd. All rights reserved. |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK060602] ; National Key R&D Program of China[2017YFA0604803] ; Natural Science Foundation in China[31988102] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000632807700045 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research Program ; National Key R&D Program of China ; Natural Science Foundation in China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/161734]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Peng, Changhui; He, Nianpeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Hunan Normal Univ, Coll Resources & Environm Sci, Changsha 410081, Peoples R China 3.Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China 4.Univ Quebec, Inst Environm Sci, Dept Biol Sci, CP 8888,Succ Ctr Ville, Montreal, PQ H3C 3P8, Canada |
| 推荐引用方式 GB/T 7714 | Li, Mingxu,Peng, Changhui,Zhang, Kerou,et al. Headwater stream ecosystem: an important source of greenhouse gases to the atmosphere[J]. WATER RESEARCH,2021,190:9. |
| APA | Li, Mingxu.,Peng, Changhui.,Zhang, Kerou.,Xu, Li.,Wang, Jianming.,...&He, Nianpeng.(2021).Headwater stream ecosystem: an important source of greenhouse gases to the atmosphere.WATER RESEARCH,190,9. |
| MLA | Li, Mingxu,et al."Headwater stream ecosystem: an important source of greenhouse gases to the atmosphere".WATER RESEARCH 190(2021):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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