Determining whether Qinghai-Tibet Plateau waterbodies have acted like carbon sinks or sources over the past 20 years
文献类型：期刊论文
| 作者 | Jia, Junjie1,2; Sun, Kun1; Lu, Sidan1; Li, Mingxu1,2; Wang, Yafeng3; Yu, Guirui1,2; Gao, Yang1,2 |
| 刊名 | SCIENCE BULLETIN
 |
| 出版日期 | 2022-11-30 |
| 卷号 | 67期号:22页码:2345-2357 |
| 关键词 | Carbon budget Carbon cycle Carbon exchange flux Global climate change Carbon emissions |
| ISSN号 | 2095-9273 |
| DOI | 10.1016/j.scib.2022.10.023 |
| 通讯作者 | Gao, Yang(gaoyang@igsnrr.ac.cn) |
| 英文摘要 | Half of all of China's lakes are on the Qinghai-Tibet Plateau (QTP), which are mainly distributed at altitudes above 4000 m asl. Being under conditions of progressively intensifying anthropogenic activities and climate change, the debate on whether QTP lakes act as carbon (C) sinks or sources remains unresolved. This study explores QTP lake C exchange processes and characteristics over the past two decades through field monitoring and data integration. Results reveal high lake carbon dioxide (CO2) exchange flux distribution patterns in its western and southern regions and correspondingly low values in its eastern and northern regions. Lake CO2 exchange flux rates also show significant temporal differences where those in the 2000s and 2010s were significantly higher compared to the 2020s. Annual total CO2 emission flux from QTP lakes has increased from 1.60 Tg C a(-1) in the 2000s to 6.87 Tg C a(-1) in the 2010s before decreasing to 1.16 Tg C a(-1) in the 2020s. However, QTP lakes have generally acted as C sinks when annual ice-cover periods are included in the estimation of annual C budgets. Consequently, QTP lakes are gradually evolving towards C sinks. Some small-sized freshwater lakes on the QTP exhibit C sequestration characteristics while low-mid altitude saltwater lakes also act as C sinks. Therefore, owing to the high uncertainties in the estimation of C exchange flux, the QTP lake C sink capacity has been largely underestimated. (c) 2022 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved. |
| WOS关键词 | HUMID/SEMI-ARID REGION ; CO2 PARTIAL-PRESSURE ; DIOXIDE EMISSIONS ; METHANE EMISSIONS ; GREENHOUSE GASES ; LAKES ; CHINA ; FLUX ; SUPERSATURATION ; TEMPERATURE |
| 资助项目 | CAS (Chinese Academy of Sciences) Project for Young Scientists in Basic Research[YSBR037] ; National Natural Science Foundation of China[42225103] ; National Natural Science Foundation of China[42141015] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000910089600015 |
| 出版者 | ELSEVIER |
| 资助机构 | CAS (Chinese Academy of Sciences) Project for Young Scientists in Basic Research ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/189155]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Yang |
| 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.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Junjie,Sun, Kun,Lu, Sidan,et al. Determining whether Qinghai-Tibet Plateau waterbodies have acted like carbon sinks or sources over the past 20 years[J]. SCIENCE BULLETIN,2022,67(22):2345-2357. |
| APA | Jia, Junjie.,Sun, Kun.,Lu, Sidan.,Li, Mingxu.,Wang, Yafeng.,...&Gao, Yang.(2022).Determining whether Qinghai-Tibet Plateau waterbodies have acted like carbon sinks or sources over the past 20 years.SCIENCE BULLETIN,67(22),2345-2357. |
| MLA | Jia, Junjie,et al."Determining whether Qinghai-Tibet Plateau waterbodies have acted like carbon sinks or sources over the past 20 years".SCIENCE BULLETIN 67.22(2022):2345-2357. |
入库方式： OAI收割
来源：地理科学与资源研究所
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