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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
Published by: INSTAAR, University of Colorado
Stable URL: http://www.jstor.org/stable/20181748
Page Count: 4
You can always find the topics here!Topics: Plants, Altitude, Carbon isotopes, Species, C4 plants, Precipitation, Leaves, Ecophysiology, Water use efficiency, Plant ecology
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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.
Arctic, Antarctic, and Alpine Research © 2007 Regents of the University of Colorado, a body corporate, contracting on behalf of the University of Colorado at Boulder for the benefit of INSTAAR