地球科学进展 ›› 2023, Vol. 38 ›› Issue (11): 1158 -1172. doi: 10.11867/j.issn.1001-8166.2023.074

青藏高原综合科学考察研究 上一篇    下一篇

青藏高原不同载体中微生物类脂物 GDGTs的研究进展及展望
吴景全 1 , 2( ), 李全莲 1 , 3( ), 武小波 1, 王宁练 4 , 5, 康世昌 1 , 2, 王世金 1 , 3   
  1. 1.中国科学院西北生态环境资源研究院 冰冻圈科学国家重点实验室,甘肃 兰州 730000
    2.中国科学 院大学,北京 100049
    3.中国科学院玉龙雪山冰冻圈与可持续发展国家野外科学观测研究站,甘肃 兰州 730000
    4.陕西省地表系统与环境承载力重点实验室,陕西 西安 710127
    5.西北大学 城市与环境学院 地表系统与灾害研究院,陕西 西安 710127
  • 收稿日期:2023-08-23 修回日期:2023-10-17 出版日期:2023-11-10
  • 通讯作者: 李全莲 E-mail:wujingquan@nieer.ac.cn;liql@lzb.ac.cn
  • 基金资助:
    国家自然科学基金项目(41971090);甘肃省科技重大专项计划(22ZD6FA005)

Progress and Prospects of Microbial Membrane Lipids GDGTs in Different Archives on the Qinghai-Xizang Plateau

Jingquan WU 1 , 2( ), Quanlian LI 1 , 3( ), Xiaobo WU 1, Ninglian WANG 4 , 5, Shichang KANG 1 , 2, Shijin WANG 1 , 3   

  1. 1.State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
    2.University of Chinese Academy of Sciences, Beijing 100049, China
    3.Yulong Snow Mountain National Field Observation and Research Station for Cryosphere and Sustainable Development, Chinese Academy of Sciences, Lanzhou 730000, China
    4.Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Xi’an 710127, China
    5.Institute of Earth Surface System and Hazards, College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China
  • Received:2023-08-23 Revised:2023-10-17 Online:2023-11-10 Published:2023-11-08
  • Contact: Quanlian LI E-mail:wujingquan@nieer.ac.cn;liql@lzb.ac.cn
  • About author:WU Jingquan, Master student, research area includes microbial lipid compounds in glaciers. E-mail: wujingquan@nieer.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(41971090);The Gansu Province Science and Technology Major Project(22ZD6FA005)

甘油二烷基链甘油四醚是一类结构稳定、来源广泛、对气候环境响应敏感的微生物标志物,也是古气候与古环境重建的重要工具。相对于其他地区,青藏高原极端微生物对环境因子的响应机理复杂,不同载体中甘油二烷基链甘油四醚的分布特征不同,这给青藏高原古气候和古环境定量重建研究带来了不确定性,限制了甘油二烷基链甘油四醚在青藏高原研究中的充分应用。首先,总结了青藏高原不同载体中甘油二烷基链甘油四醚的分布特征、来源及影响因素;其次,概述了甘油二烷基链甘油四醚指标在青藏高原古气候环境重建中的应用,重点阐述了甘油二烷基链甘油四醚在青藏高原应用中的不确定性来源及其成因解释;最后,结合青藏高原多圈层相互作用对甘油二烷基链甘油四醚的影响机理,对青藏高原各载体中甘油二烷基链甘油四醚的研究进行了讨论和展望。

Glycerol Dialkyl Glycerol Tetraethers (GDGTs) are structurally stable, ubiquitously distributed, climate-sensitive microbial biomarkers that serve as important proxies for paleoclimatic and paleoenvironmental reconstruction. Compared to other regions, the extreme environment of the Tibetan Plateau triggers complex microbial responses that cause variations in GDGT distribution characteristics across various archives. These introduce uncertainties that limit the full potential of GDGTs in paleoclimate studies on the Tibetan Plateau. This paper summarizes the distribution, sources, and influencing factors of GDGTs in different Tibetan Plateau archives. It also outlines GDGT-based paleotemperature reconstructions, along with their associated uncertainties. The sources of uncertainty and their explanatory mechanisms are highlighted. Finally, considering the interactions between earth system spheres affecting GDGT proxies on the Tibetan Plateau, perspectives on GDGT research across the Tibetan Plateau archives are discussed, and future directions are proposed.

中图分类号: 

图1 古菌isoGDGTs和细菌brGDGTs分子结构及其质子化后的质核比(m/z
Fig. 1 The structures of archaeal isoGDGTs and bacterial brGDGTs and their protonated mass to charge ratiom/z
图2 青藏高原地区已开展的GDGTs研究的位置、数量及研究载体示意图
Fig. 2 The locationsquantities and archives of the GDGTs studies carried out in the Qinghai-Xizang Plateau
图3 青藏高原土壤、泥炭、热泉和湖泊表层沉积物GDGTs分布特征
Fig. 3 Distribution pattern of GDGTs in soilpeathot spring and lake surface sediments in the Qinghai-Xizang Plateau
图4 青藏高原GDGTs相对丰度与环境变量的RDA排序图
(a)isoGDGTs相对丰度;(b)brGDGTs相对丰度;DO代表溶解氧浓度;Depth代表湖水深度;Salinity代表湖水盐度;Alt代表海拔高度;SWC代表土壤含水率;MAAT代表大气年均温
Fig. 4 RDA ranking of relative abundance of GDGTs and environmental variables in the Qinghai-Xizang Plateau:
(a) Relative abundance of individual isoGDGTs; (b) Relative abundance of individual brGDGTs;Depth represents lake water depth; Salinity represents lake water salinity; Alt represents altitude; SWC represents soil water content; MAAT represents Mean Annual Atmospheric Temperature
图5 基于GDGTs指标重建的全新世以来青藏高原不同地区的古温度变化
Fig. 5 Reconstructed temperature variations since Holocene in different regions of the Qinghai-Xizang Plateau based on the GDGTs proxies
图6 基于brGDGTs指标重建的温度与青藏高原不同地区海拔高度的相关性
Fig. 6 Correlation between brGDGTs-derived temperature estimation and altitude in different regions of the Qinghai-Xizang Plateau
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[1] 胥佩, 李茂善, 常娜, 龚铭, 伏薇. 藏东南林芝地区