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《Journal of Glaciolgy and Geocryology》 2002-05
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The Pattern of Stable Carbon Isotope Ratios in \%Sabina przewalskii\%

CHEN Tuo~ 1, 2\},\ QIN Da\|he~ 1,\ HE Yuan\|qin~ 1,\ REN Jia\|wen~ 1,\ LIU Xiao\|hong~ 1 (1.Key Laboratory of Ice Core and Cold Regions Environment, CAREERI, CAS, Lanzhou Gansu 730000, China; 2.National Laboratory of Western Chinas Environmental  
C values in different organs are different. Tree leaves have the lowest, while tree trunks have the highest δ~ 13C value. δ~ 13C also varies with exposure, with a relatively lowest δ~ 13C value in the north. There is an inconsistent trend existing in wood δ~ 13C values of different height along the trunk, suggesting no carbon isotope discrimination during the period of the downward transportation of leaf's organic compounds. Irrespective of tree height and exposure, wood δ~ 13C values have become lower and lower for the past 60 years.
【Fund】: 中国科学院引进“国外杰出人才”项目;; 中国科学院知识创新工程重大项目 (KZCXl 10 0 6);; 中国科学院寒区旱区环境与工程研究所冰芯与寒区环境重点实验室知识创新项目 (2 10 5 0 6)资助
【CateGory Index】: P597
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