| 摘要: |
| 沉积物或动物化石中的总有机碳同位素组成记录了当时生态植被状况及气候环境信息，对有机碳同位素指标的研究可解译其蕴含的地质历史时期气候和构造事件及变化特征、定量重建古生态系统中植被结构、推断C4植物的起源、扩张等，应用甚为广泛。本文主要概述了总有机碳同位素在古环境研究中应用的基本原理，介绍了在各类载体中获取其数据的实验方法步骤，对其在古环境研究中的地位与作用以例证说明，展示其应用的大好前景。 |
| 关键词: 有机碳同位素 C4型植物 古环境研究 应用 |
| DOI：10.7515/JEE201306006 |
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| Application of bulk organic carbon isotope composition for paleoenvironmental research |
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ZHAO Yan1, 2, WU Fu-li1, 3, CHI Yun-ping4, 5
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1. Institute of Tibetan Plateau Research, Chinese Academy of Science, Beijing 100101, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Science, Beijing 100101, China; 4. College of Geographic Science, Harbin Normal University, Harbin 150025, China; 5. School of Earth Sciences, Lanzhou University, Lanzhou 730000, China
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| Abstract: |
| Change of geological historical vegetation and climate are recorded by organic carbon isotopic composition (δ13C value) of sediments and animal fossils. The δ13C value, as a paleoenvironment proxy, is widely used in such studies as revealing climatic and tectonic events and their variations in geological history, quantitative reconstructing paleoecosystem vegetation structure, inferring the time and mechanism of C4 plants origin and expansion. This paper outlines theory about the application of δ13C value in paleoenvironmental research and introduces the experimental methods that how to get δ13C value data from various organic carbon carriers. Besides, examples are illustrated in this paper to show its indispensable function and excellent prospect in paleoenvirnomental study. |
| Key words: organic carbon isotope C4 plants paleoenvironmental research application |
