Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 1
Articles | Volume 23, issue 1
https://doi.org/10.5194/bg-23-39-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-39-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 1
Research article
 | 
05 Jan 2026
Research article |  | 05 Jan 2026

Vegetation-mediated surface soil organic carbon formation and potential carbon loss risks in Dongting Lake floodplain, China

Liyan Wang, Zhengmiao Deng, Yonghong Xie, Tao Wang, Feng Li, Ye'ai Zou, Buqing Wang, Zhitao Huo, Cicheng Zhang, Changhui Peng, and Andrew Macrae

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Short summary
We employed stable isotope and ¹³C nuclear magnetic resonance spectroscopy analyses to characterize soil organic carbon sources and stability in Dongting Lake wetlands. Our results revealed vegetation elevated soil organic carbon (Miscanthus: 13.76; Carex: 12.98 g kg-1 > mudflat: 6.88 g kg-1), with plant-derived carbon dominating (47.5–53.3 %). Miscanthus exhibited lower soil organic carbon stability (high O-alkyl C), suggesting a higher risk of organic carbon loss in its floodplain ecosystems.
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