Non-linear effect of water-table drawdown on water and nitrogen use efficiencies of Carex Muliensis Hand.-Mazz. In the zoige alpine wetland in tibetan plateau

Authors

  • Huiying Liu Department of Architecture, Sichuan College of Architectural Technology, Chengdu 610399, China
  • Xiaoyang Zeng Department of Architecture, Sichuan College of Architectural Technology, Chengdu 610399, China

DOI:

https://doi.org/10.3329/bjb.v25i3.84429

Keywords:

Water stress, Leaf δ13C, Nutrient limitation, Leaf C:N ratio, Tibetan Plateau

Abstract

This study explored the water and N use efficiencies of Carex muliensis in the alpine wetland along water-table gradient in the Tibetan Plateau. It was found that the water-table drawdown significantly influenced leaf δ13C (water use efficiency, WUE) and C:N ratio (N use efficiency, NUE), and exhibited a non-linear correlation with WUE and NUE. The leaf δ13C initially increased and then decreased with the deceasing water table, with a threshold of ~40 cm. A trade-off was found between WUE and NUE in C. muliensis. Findings of this investigation offer insights into the relationship between the vegetation and hydrology, as well as, provide a scientific basis for the ecohydrological regulation and vegetation conservation in the alpine wetland.

Bangladesh J. Bot. 54(3): 623-626, 2025 (September)

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Published

2025-09-29

How to Cite

Liu , H., & Zeng, X. (2025). Non-linear effect of water-table drawdown on water and nitrogen use efficiencies of Carex Muliensis Hand.-Mazz. In the zoige alpine wetland in tibetan plateau. Bangladesh Journal of Botany, 54(3), 623–626. https://doi.org/10.3329/bjb.v25i3.84429

Issue

Vol. 54 No. 3 (2025)

Section

Short Communications

License

© Bangladesh Botanical Society

Authors are required to transfer the copyright of their articles to the journal. The Declaration form is available here http://www.bdbotsociety.org/journal/journal_pdf/declaration_form.pdf