煤层作为一种特殊的沉积有机岩，完整地记录了米兰科维奇天文周期控制的古气候变化以及它所驱动的高频地层旋回。陆相低煤阶煤层气主要成藏参数，如煤储层形态分布、孔裂隙特征及“生+储+盖”组合，与米氏天文周期响应下的成煤泥炭沼泽植物类型、古水文条件及沼泽形成演化高度相关。为了揭示陆相盆地煤层气成藏与米氏旋回的响应机制，以祁连山木里煤田侏罗系多煤层含气体系为例，采用基于煤相参数快速傅里叶变换和连续小波分析、X射线衍射、电感耦合等离子质谱和碳同位素分析，结合扫描电子显微镜和压汞/液氮等煤层气储层特性分析，开展精细的定量比较研究，分析陆相多煤层含气系统成藏主控因素在米氏旋回内的周期性变动规律、响应机制及各因素之间的联系，研究陆相多煤层含气体系的成藏特征，探索米氏旋回与陆相多煤层含气系统成藏的耦合关系。

The changes of paleoclimate, and high resolution sequence stratigraphic cycles drived by the Milankovitch astronomical cycles can be identified in coal seams of the nonmarine basins. The primary coalbed methane(CBM) reservoir parameters, such as morphology and thickness of the coal seams, porosity and permeability of coal reservoirs, gas-bearing characteristics, along with superimposed relation of the generating, reservoiring and capping rocks are highly correlated to peat-swamp type, palaeohydrologic condition and paleobotany which are also corresponding to the Milankovitch astronomical cycles. We take the multiple superposed CBM systems of the Jurassic of the Muli Basin in the Qilian mountain area as a sample, rebuilt the Milankovitch astronomical cycles of the Jurassic of the Muli Basin using fast Fourier transform and continuous wavelet analysis of coal facies parameters, and analysis of carbon isotope, XRD and ICP-MS. The primary CBM reservoir parameters are studied by scanning electron microscope, mercury porosimetry and gas adsorption. Finely quantitative comparison between the Milankovitch cycles and the primary CBM reservoir parameters enables us to work out the periodicity, responding mechanism of these CBM reservoir parameters. Finally, the accumulation dynamic mechanisms of the nonmarine multiple superposed CBM reservoirs are summarized.