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The Environmental Significance of Stable Carbon Isotope Composition of Modern Plant Leaves in the Northern Tibetan Plateau, China

Guangxiu Liu, Ming Li and Lizhe An
Arctic, Antarctic, and Alpine Research
Vol. 39, No. 4 (Nov., 2007), pp. 678-681
Stable URL: http://www.jstor.org/stable/20181748
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Environmental Significance of Stable Carbon Isotope Composition of Modern Plant Leaves in the Northern Tibetan Plateau, China
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Abstract

Foliar δ¹³C values measured in 101 samples from 13 sites in northern Tibet aveaged amplitude -26.9‰, and were higher than those of other mountain regions in the world. C₄ plants were found at 4161 m, higher than C₄ species have been found before. The foliar δ¹³C values increased with altitude; however, the amplitude of increase was dependent on species. Furthermore, significantly higher δ¹³C values were found in plants grown in the southern than the northern Tanggula Mountains, a difference ascribed to precipitation.

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