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生物专属性与在早期成岩作用过程中的稳定性是反映古气候古环境变化的生物标志化合物的重要属性。内陆湖泊沉积物中的沉积有机质来源广泛,大量陆源碎屑有机质的输入,以及有机质在早期成岩作用过程中发生的变化,使其组成趋于复杂化,一些生物标志化合物的生源指征意义也变得模糊起来。除游离有机类脂质外,在沉积物中尚可分离出以化学键（酯键、酰胺键、醚键等）结合于有机大分子中的结合态有机类脂质,其组成、来源及早期成岩变化与游离有机类脂质有所不同。本文对固城湖沉积物中呈酯键和呈酰胺键结合的有机类脂
Biopecificity and stability during early diagenesis are important attributes of biomarkers that reflect changes in paleoclimate environments. Inland lacustrine sediments have a wide range of sources of sedimentary organic matter, large amounts of terrestrial detrital organic matter, and changes in organic matter that have occurred during early diagenesis, complicating the composition of some of the biomarker biogenic indicators Become fuzzy. In addition to free organic lipids, bound organic lipids that are chemically bound to organic macromolecules (chemical bonds (ester bonds, amide bonds, ether bonds, etc.) can be isolated in sediments and their composition, source and early diagenesis Changes and free organic lipids are different. In this paper, Gucheng Lake sediments were ester bonds and amide bond organic lipids