| 再建气候环境演化历史的碳同位素技术 |
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| 引用本文： | 李玉成,葛宏华,周忠泽,许仁鑫.再建气候环境演化历史的碳同位素技术[J].安徽大学学报(自然科学版),2001,25(3):73-78. |
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| 作者姓名： | 李玉成 葛宏华 周忠泽 许仁鑫 |
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| 作者单位： | [1]安徽大学生命科学学院，安徽合肥230039 [2]安徽大学分析测试中心，安徽合肥230039 |
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| 基金项目： | 国家自然科学基金;40073030; |
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| 摘 要： | 稳定碳同位素是再建气候环境变化历史最重要手段。简要回顾了碳同位素分馏的主要影响因素。介绍了碳同位素变化与生态环境变迁的可能关系 ;重点探讨了利用碳同位素再建古大气CO2 的原理和方法
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| 关 键 词： | 碳同位素 气候环境 演变历史 |
| 文章编号： | 1000-2162(2001)03-0073-06 |
Stable carbon isotope analyses in sediments and its impli cations for reconstructing climatic and environmental changes |
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| LI Yu-cheng,GE Hong-hua,ZHOU Zhong-ze,XU Ren-xin.Stable carbon isotope analyses in sediments and its impli cations for reconstructing climatic and environmental changes[J].Journal of Anhui University(Natural Sciences),2001,25(3):73-78. |
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| Authors: | LI Yu-cheng GE Hong-hua ZHOU Zhong-ze XU Ren-xin |
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| Abstract: | The relative significance of the 20th - century climatic and environmental changes must be assessed form the long - term global - scale perspective available from a spectrum of proxy histories. In many cases geochemical proxies in sediments are needed to supplement the established use of the stable isotope analyses for paleotemperature and paleohydrological modeling so as to understand the past environment conditions and evaluate predictive models of climate. In this paper, the stable carbon isotope fractionation during photosynthesis and the system CO 2(gas) - CO 2 - (aqueous) - HCO 3 ˉ(aqueous) are reviewed; and application of the stable carbon isotope to reconstruction of palaeoclimatic and palaeoenvironmental changes, espacially CO 2 levels during the late Quternary are discussed. |
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| Keywords: | carbon isotope climatic and environmental change sediments |
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