| 广东现代樟树树轮纤维素的碳同位素与厄尔尼诺事件的关系 |
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| 关键词:tree ring δ13C El Niño Guangdong |
| 基金项目:自然科学基金项目(编号:40071082) |
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| 摘要: |
| The δ13C Sequence of Cinnamomum Camphora Tree Ring α-cellulose in Yangchun County, Guangdong Province, and Its Relationship with the El Niño Event |
| The authors measured the tree ring α-cellulose δ 13C time series in Yangchun County, Guangdong Province. By spectrum analysis, the variation of tree-ring δ 13C sequence shows a quasi periodicity of 2～3 a ,which is coincident with “quasi two-year tropic barometric oscillation” (QBO)and demonstrates that the tree ring in Guangdong Province can record large-scale information of ENSO. Quasi periodicity of 4.57 a is correlated with the global standard periodicity of El Nio.The results indicate that the high-frequency oscillation of tree ring δ 13C sequence in this area is related to El Nio, temperature, rainfall and Asiatic monsoon. The climate change resulting from El Nio can be better recorded in isotopes of tree ring. In the warm and humid area the advantage of tree ring isotope lies in the fact that δ 13C can still record the effects of winter temperature and Asiatic monsoon. |
| SUN Yan-rong,CUI Hai-ting,MU Zhi-guo,LIU Hong-yan,LI Ping-ri,LIU Yu-lin,TAN Hui-zhong.2003.The δ13C Sequence of Cinnamomum Camphora Tree Ring α-cellulose in Yangchun County, Guangdong Province, and Its Relationship with the El Niño Event[J].Acta Geoscientica Sinica,24(6):505-510. |
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