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本文以准噶尔盆地侏罗系烃源岩为例，从沉积角度出发，结合有机地球化学分析，探讨陆相烃源岩的沉积环境及其对生烃潜力的影响。陆相烃源岩的沉积不仅控制了烃源岩的发育与展布，而且还由于其中原始生物丰度和种类不同而直接影响着烃源岩的有机质丰度和类型。在陆相河流－三角洲－湖泊沉积环境中，半深－深湖及前三角洲中的暗色泥岩最具生烃潜力，这类暗色泥岩发育的原生有机物主要为水生低等生物和较少的高等植物，水介质条件以还原－强还原为主，所以其有机质丰度高，类型好（以Ⅰ、Ⅱ型为主）。三角洲平原及曲流河泛滥平原岸后湖泊中的暗色泥岩也具较好的生烃潜力，这类暗色泥岩的有机质母源主要来自高等植物，水介质条件为弱氧化－弱原还，因此其有机质丰度较高，但类型以Ⅲ型为主。煤岩作为烃源岩，其生烃潜力取决于煤岩体积及富氢组分含量和演化程度。而煤岩体积和富氢组分含量又主要受控于成煤环境的古气候、古地理、成煤物质（古生物）及介质条件等。湖湾、滨湖沼泽煤最具生烃潜力，这类成煤环境不仅面积大、发育稳定，而且覆水程度高，底水介质条件多为还原－强还原；原生生物虽以高等植物为主，但发育较多的水生生物，因此其煤层不仅厚度大、分布连续，而且煤岩中的富氢组分较高。相比之下，?
Taking the Jurassic source rock in Junggar Basin as an example, the sedimentary environment and its influence on hydrocarbon generation potential of the terrestrial source rocks are discussed from the perspective of deposition and organic geochemical analysis. The sedimentation of terrestrial source rocks not only controls the development and distribution of source rocks, but also directly affects the abundance and type of organic matter of source rocks due to the abundance and species of primary organisms. In the terrestrial rivers - delta - lacustrine sedimentary environment, the dark mudstone in the semi-deep-deep lake and the former delta has the most potential for hydrocarbon generation. The primary organic matter developed by such dark mudstone is mainly low-water-living organisms and few higher plants , Water medium conditions to restore - strong reduction, so its high abundance of organic matter, type is good (mainly Ⅰ, Ⅱ). The dark mudstones in the delta plain and the meandering lakes of the meandering plains also have good potential for hydrocarbon generation. The organic maternal sources of these dark mudstones are mainly from higher plants, and the aqueous medium conditions are weakly oxidized - The abundance of organic matter is higher, but the type is mainly type Ⅲ. Coal rock as a source rock, its hydrocarbon potential depends on the volume of coal and hydrogen-rich component content and evolution. However, the volume of coal and rock and the content of hydrogen-rich components are mainly controlled by paleoclimate, palaeogeography, coal-forming matter (palaeontology) and medium conditions of the coal-forming environment. Lake Bay, Lake Marsh the most hydrocarbon potential of hydrocarbon generation, such a coal-forming environment is not only an area of large, stable development, but also a high degree of water cover, bottom water medium conditions are mostly reduction - strong reduction; although the protists mainly higher plants, But develop more aquatic organisms, so the coal seam is not only thick, continuous distribution, and coal-rich hydrogen-rich components. In contrast,?