Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 29, issue 21
Articles | Volume 29, issue 21
https://doi.org/10.5194/hess-29-6093-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-29-6093-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 29, issue 21
Research article
 | 
10 Nov 2025
Research article |  | 10 Nov 2025

The effect of rainfall variability on Nitrogen dynamics in a small agricultural catchment

Qiaoyu Wang, Jie Yang, Ingo Heidbüchel, Teng Xu, and Chunhui Lu

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Short summary
Extreme storms and droughts have profound impacts on water quality. We adopted a stochastic rainfall generator to test how rainfall changes affect the transformation and transport of nitrogen (N) and its potential effects on water quality. We found that wet/dry conditions and patterns within a year influence N transformation and transport. Mineralization and plant uptake are key processes governing the impact of nitrate on water quality under varying rainfall conditions.
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