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宁夏南部海原剖面的孢粉记录揭示出,13.0～7.014C ka BP植被演替明显,气候干湿波动显著.末次冰期向全新世过渡期间,气候波动频繁,且具突变性.12.1～11.014C ka BP研究区植被由干草原迅速演化为森林,湿度明显增加,可与博令/阿勒罗得事件对比,且表现为后期的暖湿程度明显高于前期;11.0～9.814C ka BP气候明显变干,可与新仙女木期对比,期间气候存在明显波动且表现为后期更干.全新世早期气候波动明显,但总体温暖偏干.约7.614C ka BP气候又开始变湿润.研究区孢粉记录的气候干湿波动与全球性的气候变化具有可比性,这对深入理解万年以来具有千年尺度变化的全球气候变化机制具有重要意义.
The sporopollen records of the Haiyuan profile in the southern part of Ningxia revealed that the succession of vegetation from 13.0 to 7.014 C ka BP was obvious and the climate had significant wet and dry fluctuations. During the transition from the last glacial to the Holocene, the climate fluctuated frequently and abruptly.12.1-11.014C ka Vegetation in the BP study area rapidly evolved into a forest from steppe with a marked increase in humidity, which was comparable with the Böhler / Aleroder event and showed a significantly higher degree of warm and humid in the later stage than that in the early stage. The climate of 11.0-9.814C ka BP obviously changed Dry and can be compared with the new fairy woody period, the climate has obvious fluctuations in the performance of the late dry. Early Holocene climate fluctuations obvious, but the overall warm and dry.About 7.614C ka BP climate began to become wet. The recorded climate dry-wet fluctuations are comparable with those of global climate change, which is of great importance for understanding the global climate change mechanism that has a thousand-year scale change over thousands of years.