生物壳体就位分析中存在的问题及研究进展  

PROBLEMS AND DEVELOPING TRENDS IN IN-SITUSTUDIES OF FREASWATER BIVALVE SHELLS

作　　者：闫慧[1] 李心清[1] 周会[1] 

机构地区：[1]中国科学院地球化学研究所环境地球化学国家重点实验室

出　　处：《地球与环境》2007年第3期207-214,共8页Earth and Environment

基　　金：国家自然科学基金资助项目(40403010)

摘　　要：生物壳体碳酸盐的稳定氧、碳同位素已经被大量地应用在古气候、古环境研究中。几十年的研究取得了很多重大成果,但是在生物壳体的就位分析研究中仍存在以下几个主要问题:生物壳体氧、碳同位素的解释问题;生物壳体时间序列的确定问题;就位分析研究壳体剖面的选择问题等。解决这些问题对于利用生物壳体提取高分辨率的古气候环境信息至关重要。文章针对这些问题进行了论述,并介绍了国内外为解决这些问题出现的新的研究方法及其最新研究进展。The oxygen and carbon isotopes in biogenic carbonate have been extensively used in paleoelimate and paleoenvironment studies. However, problems still remained when the shells were measured in-situ, concerning how to explain the oxygen and carbon isotopic composition of the shells, how to determine shell ages which are necessary to compare the isotope profiles of shells and host water, how to select the cross-section of the shells because of different isotope ratios for sections. It is crucial to solve these problems regarding the extraction details and accurate paleo-elimatology environmental information from biologic shells. Along with the rise of these problems, this paper reviewed the new methods to solve the problems and the new developing trends.

关 键 词：氧同位素 碳同位素 时间序列 分辨率 生物壳体 

分 类 号：X142[环境科学与工程—环境科学]