The significant contribution of lake depth in regulating global lake diffusive methane emissions
文献类型：期刊论文
| 作者 | Li, Mingxu1,2,3; Peng, Changhui1,2; Zhu, Qiuan2; Zhou, Xiaolu2; Yang, Gang4; Song, Xinzhang5; Zhang, Kerou6 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 172页码:10 |
| 关键词 | Global methane estimation Lake CH4 diffusion Maximum depth Surface area Freshwaters GHGs emissions |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2020.115465 |
| 通讯作者 | Peng, Changhui(peng.changhui@uqam.ca) |
| 英文摘要 | Global lakes have been identified as an important component of natural methane (CH4) sources. Given that lake CH4 emissions involve multiple, complex processes influenced by various environmental factors, estimates of global lake CH4 emissions are largely uncertain. In this study, we compiled global CH4 emission data on 744 lakes from published studies, and found a significantly negative correlation (R-2 = 0.50, p < 0.01) between diffusive CH4 flux and lake maximum depth. Further analysis indicated that no significant differences in global sediment CH4 production were found for the different maximum depths investigated. Owing to the longer oxidation pathway, presence of oxycline layer, and the lower nutrient environment, deeper lakes yield less diffusive CH4 efflux compared to shallower lakes. Additionally, we also found that lake area was negatively correlated (R-2 = 0.13, p < 0.01) to diffusive CH4 flux. Therefore, based on empirical correlations between lake morphometry (maximum depth and area) and diffusive CH4 emission, as well as the combination of two lake databases, we estimated that the annual diffusive CH4 emission from global lakes is approximately 11.2 (6.2-19.5) Tg CH4/yr, and greater than 84% is emitted from lakes with a mean depth of less than 5 m. Furthermore, two regions, 40-70 degrees N (30.4%) and 20 degrees S similar to 10 degrees N (37.4%), were found to be the dominant contributors of global lake diffusive CH4 emissions, resulting from the considerable total lake area and the extensive shallow lakes in these regions. This study highlights the significance of the 'depth-effect' which controls the spatial distribution of lake diffusive CH4 flux and allows for the quantification of global lake diffusive CH4 emissions. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS关键词 | GREENHOUSE-GAS EMISSIONS ; RIVER FLOODPLAIN ; NORTHERN LAKES ; CARBON-DIOXIDE ; SURFACE-WATER ; BOREAL LAKES ; OXIDATION ; PONDS ; SIZE ; EBULLITION |
| 资助项目 | National Key R&D Program of China, China[2016YFC0500203] ; Natural Sciences and Engineering Research Council of Canada (NSERC), Canada ; National Natural Science Foundation of China[31988102] ; Chinese Academy of Sciences Strategic Priority Research Program[XDA23080401] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000517663600023 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key R&D Program of China, China ; Natural Sciences and Engineering Research Council of Canada (NSERC), Canada ; National Natural Science Foundation of China ; Chinese Academy of Sciences Strategic Priority Research Program |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/132874]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Peng, Changhui |
| 作者单位 | 1.Univ Quebec Montreal, Inst Environm Sci, Dept Biol Sci, CP 8888, Montreal, PQ H3C 3P8, Canada 2.Northwest A&F Univ, Coll Forestry, Ctr Ecol Forecasting & Global Change, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Southwest Univ Sci & Technol, Sch Life Sci & Engn, Mianyang 621010, Sichuan, Peoples R China 5.Zhejiang A&F Univ, Nurturing Stn, State Key Lab Subtrop Silviculture, Linan 311300, Peoples R China 6.Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mingxu,Peng, Changhui,Zhu, Qiuan,et al. The significant contribution of lake depth in regulating global lake diffusive methane emissions[J]. WATER RESEARCH,2020,172:10. |
| APA | Li, Mingxu.,Peng, Changhui.,Zhu, Qiuan.,Zhou, Xiaolu.,Yang, Gang.,...&Zhang, Kerou.(2020).The significant contribution of lake depth in regulating global lake diffusive methane emissions.WATER RESEARCH,172,10. |
| MLA | Li, Mingxu,et al."The significant contribution of lake depth in regulating global lake diffusive methane emissions".WATER RESEARCH 172(2020):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。