Photosynthetic pathway of dominant plant species in the Qaidam Basin: evidence from foliar stable carbon isotope measurement |
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| Authors: | H Chen X L Xu M H Song H Ouyang |
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| Institution: | (1) Laboratory of Plant Stress Ecophysiology and Biotechnology, Linze Inland River Basin Research station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, 730000, China |
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| 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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| Keywords: | Additional" target="_blank">Additional C3 plants C4 plants desert vegetation precipitation |
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