南京林业大学学报(自然科学版) ›› 2014, Vol. 38 ›› Issue (06): 33-37.doi: 10.3969/j.issn.1000-2006.2014.06.007

• 研究论文 • 上一篇    下一篇

贡嘎山木本植物碳同位素沿海拔梯度的变化

谢 静1,2,朱万泽1*,周 鹏1,2,赵 广1,2   

  1. 1.中国科学院·水利部,成都山地灾害与环境研究所,四川 成都610041;
    2.中国科学院大学,北京 100049
  • 出版日期:2014-12-31 发布日期:2014-12-31
  • 基金资助:
    收稿日期:2013-10-10 修回日期:2013-12-26
    基金项目:中国科学院知识创新工程重要方向项目(KZCX2-EW-309)
    第一作者:谢静,硕士生。*通信作者:朱万泽,研究员。E-mail: wzzhu@imde.ac.cn。
    引文格式:谢静,朱万泽,周鹏,等. 贡嘎山木本植物碳同位素沿海拔梯度的变化[J]. 南京林业大学学报:自然科学版,2014,38(6):33-37.

Variations in carbon isotope of the main woody plants along the elevational gradient on the Gongga Mountain

XIE Jing1,2,ZHU Wanze1*,ZHOU Peng1,2,ZHAO Guang1,2   

  1. 1.Institute of Mountain Hazards and Environment,Ministry of Water Resources, CAS,Chengdu 610041,China;
    2.University of Chinese Academy of Sciences,Beijing 100049,China
  • Online:2014-12-31 Published:2014-12-31

摘要: 对贡嘎山东坡不同海拔的主要木本植物稳定碳同位素的组成进行了测定。结果表明:22种木本植物叶片δ13C值变化范围为-3.236%~-2.521%,平均值(-2.957±0.163)%; 不同海拔间植物叶片δ13C值差异显著,随海拔上升叶片δ13C值呈增加趋势; 同种植物(大叶金顶杜鹃、峨眉冷杉、水青树、箭竹)的δ13C值随海拔的增加也呈相同的变化趋势。不同生活型植物叶片δ13C值之间差异显著,落叶树种显著高于常绿树种。叶片δ13C值与6—9月平均温度呈显著的负相关关系,与6—8月降水量呈显著的正相关关系,温度、降水是影响木本植物叶片δ13C值海拔差异的主要因子。

Abstract: The main woody plants were collected from different elevations on the eastern slope of Gongga Mountain to study the variety of stable isotope carbon composition along the elevational gradient. This paper showed the δ13C values of 22 woody plants ranged from -3.236% to -2.521% and with the average of(-2.957±0.163)%. There was a considerable difference in the leaf δ13C values of the woody plants at different elevations. The δ13C values increased along the elevational gradient, and the same situation with the δ13C of Rhododendron faberi, Abies fabri, Tetrcentron sinense and Fargesia spathacea. Significant difference in life form of δ13C values was found, deciduous species was greater than evergreen species. Significant inverse correlation was observed between δ13C values and the temperature from June to September, and a significant positive correlation between δ13C values and the precipitation from June to August. The temperature and precipitation might be the main factors that influence the leaf δ13C values of Gongga Mountain.

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