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Photosynthetic pathway of dominant plant species in the Qaidam Basin: evidence from foliar stable carbon isotope measurement

Abstract

Foliar δ13C values of Calligogum kozlovi and Haloxylon ammodendron ranged from −13.13 to −15.11 ‰, while those of the rest 11 species were in the range of −22.22 to −27.73 ‰. This indicates that two of 13 dominant plant species in the Qaidam Basin possess a C4 photosynthetic pathway. Significant differences were observed for the average foliar δ13C values between C3 or C4 plant communities, between grass and shrub communities, even between the same species derived from different sites. Precipitation accounted for the major part of the differences.

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Correspondence to H. Chen.

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Chen, H., Xu, X.L., Song, M.H. et al. Photosynthetic pathway of dominant plant species in the Qaidam Basin: evidence from foliar stable carbon isotope measurement. Photosynthetica 46, 303 (2008). https://doi.org/10.1007/s11099-008-0055-3

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Additional key words

  • C3 plants
  • C4 plants
  • desert vegetation
  • precipitation