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应用生态学报 ›› 1992, Vol. 3 ›› Issue (4): 291-295.

• 研究论文 •    下一篇

亚热带季风常绿阔叶林树木年轮的13C/12C和空气CO2浓度变化

孙谷畴, 林植芳   

  1. 中国科学院华南植物研究所, 广州 510650
  • 收稿日期:1990-10-17 修回日期:1992-05-07 出版日期:1992-10-25 发布日期:1992-10-25
  • 基金资助:

    国家自然科学基金

13C/12C ratio in tree ring of subtropical monsoon evergreen broad-leaved forest and CO2concentration in atmosphere

Sun Guchou, Lin Zhifang   

  1. South China Institute of Botany, Academia Sinica, Guangzhou 510650
  • Received:1990-10-17 Revised:1992-05-07 Online:1992-10-25 Published:1992-10-25

摘要: 测定了亚热带季风常绿阔叶林的几种树木年轮的13C/12C比率(δ13C)。云南银柴的1962-1983年年轮δ13C平均为-28.53±0.84(n=5),华润楠的1951-1984年年轮的δ13C为-28.46±0.53(n=6)。黄果厚壳桂的1951-1984年年轮的δ13C为-29.19±0.80(n=6),木荷的1975-1984年年轮δ13C为-28.42±0.41(n=4),δ13C数值偏离平均值逐年增大。计算空气CO2浓度每年递增1.21μ1/L。

关键词: 亚热带季风常绿阔叶林, 年轮的&delta, 13C, 空气CO2浓度

Abstract: The 13C/12Cratio (δ13C) in tree ring of subtropical monsoon evergreen broad-leaved forest is determined in this paper. The average δ13Cis-28.53±0.84(n=5) for Aporosa yunnanensis from 1962 to 1983, -28.46±0.53(n=6) for Machilus chinensis from 1951 to 1984, -29.19±0.80 (n=6) for Cryptocarya concinna from 1951 to 1984 and -28.42±0.41(n=4) for Schirna superba from 1975 to 1984. Deviation of δ13Cfrom mean increases year by year, and calculated CO2 concentration in atmosphere increases by 1.21 μl/Lyearly.

Key words: Subtropical monsoon evergreen forest, σ13C in tree ring, Atmospheric CO2 concentration