Biogeosciences
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Articles | Volume 23, issue 3
Articles | Volume 23, issue 3
https://doi.org/10.5194/bg-23-1117-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-1117-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 3
Research article
 | 
06 Feb 2026
Research article |  | 06 Feb 2026

Effects of intensified freeze-thaw frequency on dynamics of winter nitrogen resources in temperate grasslands

Chaoxue Zhang, Na Li, Chunyue Yao, Jinan Gao, and Linna Ma

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Short summary
Winter warming increases freeze-thaw cycles in grasslands, yet its consequences for N cycling remain unclear. Using a ¹⁵N tracer, we found that frequent freeze-thaw cycles release N, but limit its availability to most plants, thereby benefiting soil microbes. Some cold-adapted grasses were still able to obtain N. These findings suggest that winter climate change may reshape grassland community structure and productivity.
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