Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.
Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.
Sci Total Environ. 2022 Oct 15;843:156792. doi: 10.1016/j.scitotenv.2022.156792. Epub 2022 Jun 20.
In this study, the CO flux over Siling Co Lake, the largest lake in Tibet, was analyzed employing the eddy covariance observation from 26 April 2014 to 22 March 2015. The results showed that Siling Co Lake acts as a net sink of CO with annual absorption of 315.5 g C m a. The inorganic processes might be the main reason of CO absorption in Siling Co Lake owing to its high pH as an endorheic lake. Therefore, it is essential to consider the carbon absorption of lakes when assessing the carbon sink function of the Tibetan Plateau (TP). There would be more carbon surplus on the TP when the carbon absorption by lakes is considered, which will greatly contribute to the realization of carbon neutralization across TP. This study highlights the need to strengthen the systematic observation of long-term series of CO flux in lakes on the TP, and further analyse the mechanism of CO exchange between lakes and the atmosphere.
本研究利用 2014 年 4 月 26 日至 2015 年 3 月 22 日的涡度相关观测数据，分析了西藏最大湖泊思林错的 CO 通量。结果表明，思林错作为 CO 的净汇，年吸收量为 315.5 g C m a 。由于思林错是一个内陆湖，具有较高的 pH 值，因此无机过程可能是思林错 CO 吸收的主要原因。因此，在评估青藏高原碳汇功能时，考虑湖泊的碳吸收至关重要。如果考虑到湖泊的碳吸收，青藏高原将会有更多的碳盈余，这将极大地有助于实现青藏高原的碳中和。本研究强调需要加强对青藏高原湖泊长期 CO 通量序列的系统观测，并进一步分析湖泊与大气之间 CO 交换的机制。
