Articles | Volume 22, issue 8
https://doi.org/10.5194/bg-22-2097-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-2097-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
30 Apr 2025
Research article |
| 30 Apr 2025
| 30 Apr 2025
CO2 flux characteristics of the open savanna and its response to environmental factors in the dry–hot valley of Jinsha River, China
Chaolei Yang
Yunnan Provincial Observation and Research Station for Soil and Water Resources and Carbon Sequestration in the Alpine Gorge Area of Jinsha River, Chuxiong, 651400, China
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Technology Innovation Center for Natural Carbon Sink, Ministry of Natural Resources, Kunming, 650111, China
Key Laboratory of Coupling Process and Effect of Natural Resources Elements, Ministry of Natural Resources, Beijing, 100055, China
Yunnan Provincial Observation and Research Station for Soil and Water Resources and Carbon Sequestration in the Alpine Gorge Area of Jinsha River, Chuxiong, 651400, China
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Technology Innovation Center for Natural Carbon Sink, Ministry of Natural Resources, Kunming, 650111, China
Key Laboratory of Coupling Process and Effect of Natural Resources Elements, Ministry of Natural Resources, Beijing, 100055, China
Jingqi Cui
Institute of Space Weather, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, 210044, China
Guangxiong He
Tropical Eco-Agriculture Research Institute, Yunnan Academy of Agricultural Sciences, Chuxiong, 651300, China
Jingyuan Li
Institute of Space Weather, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, 210044, China
Canfeng Li
Yunnan Provincial Observation and Research Station for Soil and Water Resources and Carbon Sequestration in the Alpine Gorge Area of Jinsha River, Chuxiong, 651400, China
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Technology Innovation Center for Natural Carbon Sink, Ministry of Natural Resources, Kunming, 650111, China
Haichuang Duan
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Zong Wei
Yunnan Provincial Observation and Research Station for Soil and Water Resources and Carbon Sequestration in the Alpine Gorge Area of Jinsha River, Chuxiong, 651400, China
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Liu Yan
Yunnan Provincial Observation and Research Station for Soil and Water Resources and Carbon Sequestration in the Alpine Gorge Area of Jinsha River, Chuxiong, 651400, China
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Xin Xia
Yunnan Provincial Observation and Research Station for Soil and Water Resources and Carbon Sequestration in the Alpine Gorge Area of Jinsha River, Chuxiong, 651400, China
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Yong Huang
Yunnan Provincial Observation and Research Station for Soil and Water Resources and Carbon Sequestration in the Alpine Gorge Area of Jinsha River, Chuxiong, 651400, China
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Aihua Jiang
Yunnan Provincial Observation and Research Station for Soil and Water Resources and Carbon Sequestration in the Alpine Gorge Area of Jinsha River, Chuxiong, 651400, China
Kunming General Survey of Natural Resources Center, China Geological Survey, Kunming, 650111, China
Yuwen Feng
Bazhong Meteorological Office of Sichuan Province, Bazhong, 636000, China
Data sets
China's multi-year provincial administrative division boundary data X. L. Xu https://doi.org/10.12078/2023010103
China's multi-year county administrative division boundary data X. L. Xu https://doi.org/10.12078/2023010101
China watershed and river network datasets based on DEM extraction X. L. Xu https://doi.org/10.12078/2018060101
Short summary
Due to the influence of extreme-drought events in southwest China, the carbon sequestration capacity of the open savanna in the dry–hot valley of the Jinsha River has been significantly diminished, with soil water content being the key environmental factor governing CO2 flux. Under the climate scenario where the frequency and severity of extreme droughts are expected to continue increasing, the CO2 emissions from the open savanna are also anticipated to rise persistently.
Due to the influence of extreme-drought events in southwest China, the carbon sequestration...
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