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通过对柴达木盆地尕海DG03孔沉积序列的年代学测定和沉积物分析,选取对气候环境较为敏感的SiO2,Al2O3,TiO2,Fe2O3,MgO,CaO,K2O,Na2O等作为环境代用指标,分析了尕海地区11.5kaBP以来的气候环境变化。研究表明尕海地区在11.5kaBP以来存在4个明显的气候变化期:晚冰期晚期(11.5～10.16kaBP)的气候波动较大,其中11.5～11.16kaBP是暖干气候;11.16～10.16kaBP,气候冷干,可能是新仙女木事件的反映;全新世早期(10.16～7.83kaBP)气候转暖,有短期极干冷事件的发生;中全新世适宜期(7.83～4.73kaBP),气候温暖湿润;4.73kaBP以来的全新世晚期,气候环境明显恶化,期间出现气候暖湿与干冷的多次波动变化。
Based on the chronological analysis and sediment analysis of the depositional sequence of pore DG03 in Gahai, Qaidam basin, the environmental proxy indexes were selected for the environmental sensitive indexes such as SiO2, Al2O3, TiO2, Fe2O3, MgO, CaO, K2O and Na2O The climate change in Gahai area since 11.5kaBP. The study shows that there are four obvious climate change periods in Gahai area since 11.5kaBP: the late-glacial stage (11.5 ~ 10.16kaBP) has a large climate fluctuation, of which 11.5 ~ 11.16kaBP is warm and dry climate; 11.16 ~ 10.16kaBP, Dry, may be a reflection of the new fairy wood events; early Holocene (10.16 ~ 7.83kaBP) climate warming, there is a very short dry event; Mid-Holocene suitable period (7.83 ~ 4.73kaBP), warm and humid climate; 4.73kaBP Since late Holocene, the climate environment has obviously deteriorated. During the Holocene, there are many fluctuations in the warm, wet and dry climate.