微生物四醚膜脂化合物在湖泊环境中的研究进展  

Application of Microbial Membrane Tetraether Lipids in Lacustrine Environments: A Review

作　　者：李婧婧[1] 谢树成[1] 

机构地区：[1]中国地质大学(武汉)生物地质与环境地质国家重点实验室,武汉430074

出　　处：《矿物岩石地球化学通报》2015年第2期277-284,309,共9页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家重点基础研究发展规划项目(2011CB808800);国家自然科学基金重点项目(41330103)

摘　　要：近十几年来,甘油二烷基甘油四醚类化合物(GDGTs)已成为生物地球化学研究的热点,此类化合物广泛分布在海洋、湖泊、土壤、泥炭以及热泉等不同类型的环境载体中,并且携带丰富的环境信息,基于此类化合物分布构建的参数已成为重建古环境变迁的重要指标。本文首先从GDGTs化合物的结构以及生物来源出发,重点阐述了基于此类化合物构建的几个指标TEX86、BIT、MBT/CBT以及ACE在湖泊环境研究中的应用及存在的不足,随后概述了特殊类型湖泊即富营养、高盐度湖泊中GDGTs化合物的分布特征,最后对GDGTs化合物在湖泊环境的研究提出总结以及展望。Glycerol dialkyl glycerol tetraethers （GDGTs） are membrane lipids that occur ubiquitously in a wide range of environments, such as ocean, lake, soil, peat as well as hot spring. The distribution pattern of GDGTs has led to the information that they might be indicators for certain environmental parameters, and proxies based on GDGTs are increasingly being utilized in palaeoclimatology to reconstruct palaeoenvironmental parameters. Here we reviewed the progress made over the last decade in the biogeochemieal analysis of GDGTs, we first discussed the structures and biological sources of GDGTs, then discussed the proxies, such as TEX86, BIT, MBT/CBT and ACE indices, and their applications and constraints in lacustrine environments. We also reviewed the occurrence of GDGTs in eutrophic and high saline lake sediments. Finally we summarized the development of GDGTs in the lacustrine environment.

关 键 词：湖泊环境 微生物脂膜 生物标志物 四醚脂类化合物 

分 类 号：P593[天文地球—地球化学]