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对贺兰山北段呼鲁斯太和沙巴台地区晚石炭世和早二叠世植物化石进行了研究，共鉴定植物化石２０属４０种，讨论了植物群的性质和时代。在研究植物群特征基础上，分析了植物化石埋藏类型，论证了植物群的古生态特征，划分了５个植物群落：（１）Ｂｏｔｈｒｏｄｅｎｄｒｏｎｃｉｒｃｕｌａｒｅ群落；（２）Ｌｅｐｉｄｏｄｅｎｄｒｏｎｓｕｂｒｈｏｍｂｉｃｕｍ群落；（３）Ｌｅｐｉｄｏｄｅｎｄｒｏｎｓｚｅｉａｎｕｍ群落；（４）Ｔａｅ－ｎｉｏｐｔｅｒｉｓｍｕｃｒｏｎａｔａ群落；（５）Ｐｅｃｏｐｔｅｒｉｓｏｒｉｅｎｔａｌｉｓ群落。这５个植物群落的时代分别相当于晚石炭世早期、晚石炭世中期、晚石炭世晚期、早二叠世早期和早二叠世晚期。石松类植物在晚石炭世沼泽环境最为丰富，以华夏植物区大量的特有种为特征。而蕨类植物和种子蕨类植物在早二叠世的泥炭沼泽和泛滥平原环境占优势。这些植物群落在晚石炭世和早二叠世广泛分布在不同演化阶段的泥炭沼泽和碎屑低地环境，指示温暖潮湿的气候条件。
Late Carboniferous and Early Permian plant fossils from the Taihu and Taipetai areas in the area of Huluoshu in the northern Helan Mountain were studied. Forty fossils of 20 genera were identified, and the nature and age of the flora were discussed. On the basis of studying the characteristics of plant flora, the types of burial plant fossils were analyzed, and the paleoecological characteristics of the flora were demonstrated. Five plant communities were divided into: (1) Bothrodendroncirculare community; (2) Lepidodendronsubrhombicum community; (3) Lepidodendronszeianum community; 4) Tae-niopterismucronata community; (5) Pecopterisorientalis community. The ages of these five plant communities correspond to the early Late Carboniferous, Late Middle Carboniferous, Late Carboniferous, Early Early Permian and Late Early Permian, respectively. Stone pine plants in the Late Carboniferous swamp environment is the most abundant, characterized by a large number of endemic species in the Chinese plant area. Ferns and seed ferns dominate the peat swamps and flood plains in the Early Permian. These plant communities were widely distributed in peat swamps and detritus environments in different stages of evolution in the Late Carboniferous and Early Permian, indicating warm and humid climatic conditions.