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地处季风/非季风影响过渡地带的月亮湖是大兴安岭中段阿尔山-柴河火山区中的一个火山口湖.其长8.86m的沉积岩心孢粉记录,揭示了末次冰期晚期以来的古植被演化和古气候变化历史:20.9～18.0cal.kaB.P.期间研究区的植被为典型草原,气候寒冷干旱;18.0～15.3cal.kaB.P.期间研究区的植被为草甸草原,气候寒冷湿润;15.3～14.0cal.kaB.P.期间乔木开始在当地发育,植被开始由草甸草原向森林草原转变,气候向较为温暖湿润的方向转变;14.0～12.8cal.kaB.P.期间森林草原在温暖湿润的气候影响下,森林扩张,草原退缩,与Blling-Allerd暖期相对应;12.8～11.8cal.kaB.P.期间草原在寒冷气候下扩张,可与新仙女木期相对应;11.8～0.8cal.kaB.P.期间在较为温暖的气候条件下,草原在气候快速变冷事件的影响下发生了多次扩张,其中,较为明显的6次气温突降事件分别发生在9.0～8.9,8.2～7.8,7.0～6.8,6.1～5.6,5.4～5.2,2.3～1.8cal.kaB.P..这些快速气候变化事件与全球和区域中其他高分辨率古气候记录具有可比性,揭示出月亮湖敏感地记录了全球和区域气候的变化,同时也表明研究区的高分辨率孢粉分析是研究东亚季风强度变化的良好指标.
Moon Lake, located in the transition zone of monsoon / non-monsoon, is a crater lacustrine in the Aershan-Chaihe volcanic region in the middle section of the Greater Hinggan Mountains.The sedimentary core sporopollen record of 8.86m in length reveals the evolution of ancient vegetation since the last glacial And paleoclimatic change history: 20.9 ~ 18.0cal.kaB.P. The vegetation in the study area was typical steppe with cold and dry climate. During the period of 18.0 ~ 15.3cal.kaB.P., the vegetation in the study area was meadow steppe with cold and humid climate During the period of 15.3 ~ 14.0cal.kaB.P., the arbor began to develop in the area. The vegetation began to change from meadow steppe to forest steppe. The climate changed to a warmer and more humid climate. During 14.0 ~ 12.8cal.kaB.P., Under the influence of warm and humid climate, the forests expanded and the grasslands shrank, corresponding to the warming of B lling oling-Aller d d; during 12.8 ~ 11.8 cal.kaB.P, the grasslands expanded in cold climates, Correspondingly, during the period of 11.8 ~ 0.8cal.kaB.P., in the warmer climatic conditions, the grassland expanded several times under the influence of the rapid climate change. Among them, the 6 obvious temperature dip occurred in 9.0 ~ 8.9, 8.2 ~ 7.8, 7.0 ~ 6.8, 6.1 ~ 5.6, 5.4 ~ 5.2, 2.3 ~ 1.8cal.kaB.P .. These rapid climate change events are comparable to other high-resolution paleoclimate records both globally and in the region, revealing that Moon Lake sensitively recorded global and regional climate changes while It also shows that the high resolution sporopollen analysis in the study area is a good indicator to study the intensity change of the East Asian monsoon.