Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.16054 |
Significant winter CO2 uptake by saline lakes on the Qinghai-Tibet Plateau | |
Xiao-Yan Li; Fang-Zhong Shi; Yu-Jun Ma; Shao-Jie Zhao; Jun-Qi Wei | |
2022-01-06 | |
发表期刊 | Global Change Biology |
出版年 | 2022 |
英文摘要 | Direct measuring of CO2 flux remains challenging for global lakes. The traditional sampling and gas transfer models used to estimate lake CO2 fluxes are variable and uncertain, and ice-covered periods are often excluded from the annual carbon budget. Here, the first longtime (2013−2017) direct measurement of CO2 flux by eddy covariance system over the largest saline lake (Qinghai lake) in the Qinghai-Tibet Plateau (QTP) revealed that ice-covered period draws large amounts of CO2 from the atmosphere (−0.87 ± 0.38 g C m−2 d−1), a value more than twice the CO2 flux rate during the ice-free period (−0.41 ± 0.35 g C m−2 d−1). The total CO2 uptake by all saline lakes on the QTP was estimated to −10.28 ± 1.65 Tg C yr−1, an equivalent to approximately one third of the net terrestrial ecosystems carbon sink in QTP. Our results indicate large sink for CO2 in winter is controlled by both seasonal hydrochemistry processes and lake ice absorption in saline lakes. This research also demonstrates decreasing CO2 uptake from the atmosphere by saline lakes on the QTP, which may turn carbon sinks to carbon sources with future warming. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/345114 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Xiao-Yan Li,Fang-Zhong Shi,Yu-Jun Ma,et al. Significant winter CO2 uptake by saline lakes on the Qinghai-Tibet Plateau[J]. Global Change Biology,2022. |
APA | Xiao-Yan Li,Fang-Zhong Shi,Yu-Jun Ma,Shao-Jie Zhao,&Jun-Qi Wei.(2022).Significant winter CO2 uptake by saline lakes on the Qinghai-Tibet Plateau.Global Change Biology. |
MLA | Xiao-Yan Li,et al."Significant winter CO2 uptake by saline lakes on the Qinghai-Tibet Plateau".Global Change Biology (2022). |
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