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

doi:10.11867/j.issn.1001-8166.2023.074

Advances in Earth Science ›› 2023, Vol. 38 ›› Issue (11): 1158-1172. doi: 10.11867/j.issn.1001-8166.2023.074

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.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)

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Jingquan WU, Quanlian LI, Xiaobo WU, Ninglian WANG, Shichang KANG, Shijin WANG. Progress and Prospects of Microbial Membrane Lipids GDGTs in Different Archives on the Qinghai-Xizang Plateau[J]. Advances in Earth Science, 2023, 38(11): 1158-1172.

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.

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