Distributions And Influencing Factors Of Microbes In Quaternary Saline Sediments From Qaidam Basin

Phospholipid fatty acid (PLFA) and glycerol dialkyl glycerol tetraethers (GDGTs) analysis methods were employed to obtain the information of biomass, microbial community structure in the Sanhu area of Qaidam Basin between 96 to 2400.00m. The study proved the fact of the existence of microorganisms, and the microbial diversity was analyzed, and the possible metabolism, main control factors related to biomass and PLFAs diversity, such as TOC, DOC, water content, pH etc has also been disccussed. Besides, the application possibility of GDGTs in reconstructing paleotemperature has been inspected. All in all, the study of microbes in the world's biggest Quaternary biogas production area has revealed the evolution and distribution characteristics of microbes in deep saline sediments, which may give new consideration to the depth limit and control factors of biogas production.