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Photosynthesis, transpiration, and water use efficiency of Leymus dasystachys on the Hunshandake desert

  • Brief Communication
  • Published:
Photosynthetica

Abstract

Net photosynthetic rate (P N), transpiration rate (E), and stomatal conductance (g s) declined from upper leaves to the lower ones during dry and rainy seasons, indicating that long-term carbon budget should take into account P N variations for different leaf types. Relatively greater P N in the dry season suggested that this species is more able to maintain higher P N under drought, but the relatively higher E in the dry season might reduce water use efficiency (P N/E) for the species. Significant correlations between P N and g s indicated that g s may be the critical factor for P N variability in the desert region.

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Authors and Affiliations

  1. Laboratory of Quantitative Vegetation Ecology, Institute of Botany, the Chinese Academy of Sciences, No. 20 Nanxincun, Xiangshan, Beijing, 100093, China

    R. Z. Wang & X. Q. Liu

  2. Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, No. 20 Nanxincun, Xiangshan, Beijing, 100093, China

    Q. Xing

  3. Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, Sask., S7N 5A8, Canada

    Y. Bai

Authors
  1. R. Z. Wang
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  2. X. Q. Liu
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  3. Q. Xing
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  4. Y. Bai
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Wang, R.Z., Liu, X.Q., Xing, Q. et al. Photosynthesis, transpiration, and water use efficiency of Leymus dasystachys on the Hunshandake desert. Photosynthetica 43, 289–291 (2005). https://doi.org/10.1007/s11099-005-0047-5

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  • DOI: https://doi.org/10.1007/s11099-005-0047-5

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