Articles | Volume 22, issue 18
https://doi.org/10.5194/bg-22-4993-2025
© 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-22-4993-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
26 Sep 2025
Research article |
| 26 Sep 2025
| 26 Sep 2025
Tree growth and water-use efficiency at the Himalayan fir treeline and lower altitudes: roles of climate warming and CO2 fertilization
State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637009, Sichuan, China
State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
China National Botanical Garden, Beijing 100093, China
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Short summary
This study explores how rising CO₂ and increasing temperatures affect the growth of Himalayan fir trees on the Tibetan Plateau, particularly in relation to water availability. We found that, while tree growth in wet, high-elevation areas improved with increased CO₂, growth in dry, low-elevation areas declined due to water stress. These findings suggest that, while CO₂ may boost growth in some areas, the negative effects of drought may outweigh these benefits.
This study explores how rising CO₂ and increasing temperatures affect the growth of Himalayan...
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