植硅体圈闭碳地球化学研究进展

发布时间：2018-03-04 02:27

本文选题：植硅体　切入点：圈闭碳　出处：《地球科学进展》2017年02期 　论文类型：期刊论文

【摘要】：植硅体是一种地球化学稳定性非常高的植源性非晶质二氧化硅颗粒物,在其形成过程中会圈闭一定量的有机碳。目前,植硅体圈闭碳(简称植硅体碳)被认为是一种稳定的碳汇机制,对调节全球气候变化具有重要意义,同时,植硅体碳同位素的研究对于古环境、古气候重建等研究领域具有重要的价值,因此,植硅体圈闭碳的地球化学研究受到许多学者的关注。基于国内外学者对植硅体、植硅体圈闭碳及其相关领域的研究成果,综述了植硅体的形成过程、化学元素组成、地球化学稳定性、植硅体碳汇以及植硅体碳同位素在古环境研究中的应用5个方面的研究进展,同时总结了当前植硅体及其圈闭碳在地球化学过程研究中所面临的主要问题,对于未来继续开展植硅体地球化学研究工作具有重要意义。
[Abstract]:Phytolith is a kind of non-crystalline silica particles with high geochemical stability, which trap a certain amount of organic carbon during its formation. Phytolith trap carbon is considered to be a stable carbon sink mechanism, which is of great significance in regulating global climate change. At the same time, the study of phytolith carbon isotopes is of great importance to paleoenvironment. Paleoclimate reconstruction and other research fields are of great value. Therefore, many scholars have paid close attention to the geochemical study of phytoplankton trap carbon. Based on the research results of phytolith, phytolith trap carbon and its related fields, many scholars at home and abroad have studied the phytoplankton, phytoplankton trap carbon and their related fields. In this paper, the progress in the research on the formation process, chemical element composition, geochemical stability, carbon sequestration and the application of phytolite carbon isotopes in paleoenvironment is reviewed. At the same time, this paper summarizes the main problems in the study of the geochemical process of phytosilicas and their traps, which is of great significance for the further study of phytolith geochemistry.
【作者单位】：天津大学表层地球系统科学研究院;中国科学院地质与地球物理研究所新生代地质与环境重点实验室;贵州民族大学化学与环境科学学院;铜仁学院生物与农林工程学院梵净山特色动植物资源重点实验室;浙江农林大学暨阳学院;
【基金】：国家自然科学基金优秀青年科学基金项目“陆地硅—碳耦合生物地球化学循环”(编号:41522207)资助~~
【分类号】：P593

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