颗石藻矿化作用的矿物学特征与地球环境指示意义  

The Indication of Environmental Significance by Mineral Characteristics during Biomineralization of Living Coccolithophores

作　　者：孙仕勇[1,2] 郭鹏云[1,2] 邹翔[1,2] 林森[1,2] Shiyong SUN;Pengyun GUO;Xiang ZOU;Sen LIN(Key Laboratory of Solid Waste Treatment and Resource Recycle of Ministry of Education,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Department of Geological and Mineral Engineering,School of Environment and Resource,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China)

机构地区：[1]西南科技大学固体废物处理与资源化教育部重点实验室,绵阳621010 [2]西南科技大学环境与资源学院地质与矿物工程系,绵阳621010

出　　处：《环境科学前沿（中英文版）》2016年第1期28-31,共4页Frontier of Environmental Science

基　　金：国家自然科学基金项目(41472310)。

摘　　要：颗石藻是一类广泛分布于现代海洋的超微型浮游单细胞植物,经生物矿化作用形成的颗石粒在古海洋学研究中具有重要意义。颗石藻矿化作用对地球环境指示作用的思路是针对颗石藻矿化作用及其环境属性的复杂性,以同步辐射化学成分及精细结构的空间分布、显微形态、主微量元素成分、结构、谱学、碳氧稳定同位素等矿物学方法和生理生化表征技术,获取颗石藻矿化作用形成颗石的精细矿物标型特征和响应环境变化的环境标型特征以及相互之间内在联系,揭示颗石藻矿化作用的微观环境耦合调控机制,建立利用颗石藻指示海洋环境变化的量化指标,应用于预测颗石藻应对未来海洋与气候变化的适应机制和反演古海洋与古气候的研究。本文对颗石藻的矿化作用与地球环境指示意义做了深入探讨,对未来研究方向做了展望。Coccolithophores is a class of single-celled autotrophic microalgaes which are widely distributed in modern ocean.Fossil coccoliths which formed by the biomineralization process of coccolithophores have important significance in paleoceanography.Therefore,mineralogical characteristics during biomieralization of living coccolithophores,which revealed by synchrotron based chemical composition and fine structure spatial distribution,major and trace element composition,structure and spectroscopic,carbon and oxygen stable isotopes and analysis of physiological and biochemical assays,can be used for enviornmental indication.According to typomorphic characteristics of fine mineral and response to environmental changes,and their relationship between each other,the environment coupled micro regulation mechanism of coccolithopores mineralization will be revealed and quantitative indicators of coccolithopores mineralization for response vertical variation of marine environment will be built for applying to forecasting future adaption mechanism and inversing Holocene paleoceanographic and paleoclimatic marine conditions.The indication of environmental significance by mineral characterisitics during biomineralization of living coccolithophores is presented in this review.The key points in the future study were also discussed.

关 键 词：生物矿化作用 颗石藻 矿物-微生物交互作用 环境指示意义 地球生物学 

分 类 号：P512.5[天文地球—地质学] P57