双壳类壳体时间序列的建立方法及存在的问题

利用双壳类壳体提取古气候古环境信息是生物碳酸盐研究的热点,而壳体定年一直是研究中的难点。相关研究主要观点是先找到一些时间控制点,再按照线性内插法来确定壳体的时间序列。本文综述了国内外目前双壳类壳体定年的常用方法,根据时间控制点的获得将这些方法归为以下几类:壳体日生长层法、壳体氧同位素法、数字图像技术法和微量元素法,介绍并讨论了每种方法的应用和存在的不足。研究者应该根据具体研究的生物和环境选择适合的方法。

Methods of Establishing Time Series of Bivalve Shells and Existing Problems

Bivalves are the important paleo-climate and paleo-environment archives.However,it is still tough and difficult to date and establish time series of proxies.Research is focused on some control points,and then linear interpolation will be used to determine the time series of the shells.The current dating methods of bivalve shells can be classified as the following categories: daily increment,oxygen isotope method,digital image technology,and trace element approach.In this paper,the authors introduced and discussed the application and shortcomings of each method.Researchers should select the appropriate method on the basis of specific studies of biological and environmental conditions.