陇西黄土高原马兰黄土内存在９个弱成壤组（层），记录了末次冰欺内多达２２个间冰段气候的环境状况。马兰黄土中部古土壤是末次冰期大间冰段的记录，共有上、中、下３层古土壤，含１１个亚层，尤以下层古土壤发育最好，表明当时气候较温暖湿润。陇西马兰黄土记录与格陵兰ＧＲＩＰ冰芯记录相吻合，说明末次冰期内气候快速变化和不稳定性具有全球意义 There are nine weak pedogenesis units in the Malan loess in Longxi Loess Plateau, and the environmental conditions of up to 22 inter-ice climates in the last ice bulge are recorded. The paleosol in the central part of Malan loess is the record of the large glacial segment in the last glacial period. There are three ancient soils in the upper, middle and lower parts of the basin, including 11 sub-layers, especially in the lower palaeo-layer, indicating that the climate was warm and humid at that time. The Longlan Malan loess record coincides with the Greenland GRIP ice core record, which shows that global climate change and instability in the last glacial period have global significance