Issue |
Natl Sci Open
Volume 3, Number 5, 2024
|
|
---|---|---|
Article Number | 20230061 | |
Number of page(s) | 16 | |
Section | Earth and Environmental Sciences | |
DOI | https://doi.org/10.1360/nso/20230061 | |
Published online | 29 February 2024 |
RESEARCH ARTICLE
Climate change reductions in lake ice cover duration and thickness help regulate the carbon sink potential of plateau type lakes
1
College of Earth and Environment Science, Lanzhou University, Lanzhou 730000, China
2
State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
3
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
4
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
* Corresponding author (email: gaoyang@igsnrr.ac.cn)
Received:
4
October
2023
Revised:
15
January
2024
Accepted:
6
February
2024
Lake ice changes in winter under the influence of global climate change, but how lake ice changes will regulate water gross primary productivity (GPP) and carbon sequestration capacity is still unclear. Here, we evaluated and analyzed the geographic spatial pattern and dynamic changes of lake ice and GPP on the Qinghai-Tibetan Plateau (QTP) in the past 20 years. Results show that lake ice duration on the QTP is 123.36±2.43 d on average, although longer for lakes at higher altitudes, of moderate size, and with shallower depths. Lake ice thickness is between 55–66 cm on average, and its GPP on the QTP is between 0.17–3.35 g C m−2 d−1. In the context of global climate change, reductions in lake ice cover duration and changes in ice thickness on the QTP increased phytoplankton GPP during the winter freeze period while decreasing Carbon dioxide (CO2) emissions during the melting period.
Key words: Qinghai-Tibetan Plateau / lake ice / gross primary productivity / carbon sequestration
© The Author(s) 2024. Published by Science Press and EDP Sciences.
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