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SOIL
Articles | Volume 11, issue 2
Articles | Volume 11, issue 2
https://doi.org/10.5194/soil-11-793-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/soil-11-793-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 11, issue 2
Original research article
 | 
09 Oct 2025
Original research article |  | 09 Oct 2025

High biodegradability of water-soluble organic carbon in soils at the southern margin of the boreal forest

Yuqi Zhu, Chao Liu, Rui Liu, Hanxi Wang, Xiangwen Wu, Zihao Zhang, Shuying Zang, and Xiaodong Wu

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Short summary
Water-soluble organic carbon (WSOC) is crucial in boreal forests, but its behavior across soil depths is poorly understood. Our study found that shallow soils contain complex WSOC molecules with high biodegradability, while deeper soils have simpler molecules that are also highly biodegradable. These results reveal the significant role of WSOC in carbon cycling across soil layers, improving our understanding of carbon dynamics in boreal ecosystems impacted by climate change.
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