【作者】 刘梅；

【导师】 梁汉东；

【作者基本信息】 中国矿业大学（北京） ， 环境科学， 2011， 博士

【摘要】 本文以柴达木盆地三湖地区涩北1井盐湖沉积剖面94-2400m样品为研究对象,综合运用磷脂脂肪酸(PLFA)和甘油二烷基甘油四醚(GDGTs)方法,系统研究了包括产甲烷菌在内的微生物(细菌、真菌、古菌)在整个垂直剖面上的分布特征,探讨了地质微生物的群落结构及可能的新陈代谢作用；结合总有机碳、水溶有机碳含量、含水率、pH值等理化条件,探寻了大陆深部微生物分布的主控因素；初步讨论了甘油二烷基甘油四醚的相关地质指标在深部湖泊沉积物中的应用性。本文通过对世界著名第四系生物气产区深部特定微生物功能群落的研究,揭示了大陆沉积物深部极端环境中微生物的分布特征,促使对生物气生成的下限及主控因素重新思考。更多还原

【Abstract】 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.更多还原