历史记录提取的近5～2.7ka黄河中下游平原重要气候事件及其环境意义

IMPORTANT CLIMATIC EVENTS SHOWED BY HISTORICAL RECORDS FROM MIDDLE AND LOWER REACH PLAIN OF THE YELLOW RIVER DURING 5～2.7Ka AND THEIR ENVIRONMENTAL SIGNIFICANCE

在对先秦历史文献可信度高的记录进行考辨的基础上 ,提取出包含多层面气候变化信息的 4个具有典型意义的气候事件 ,参证于甲骨文等考古学资料 ,并与竺可桢曲线、敦德冰心δ1 8O记录进行对比以接受验证 ,确认了所提取气候事件的客观存在 ,结论是 :5～ 2 .7ka B.P.黄河中下游平原气候环境变化呈现多样性 ,间有高温强降雨、海侵、降尘等现象发生 ,干旱作为头等灾害一直存在 ,提取的历史气候事件概括性、真实性强 ,在过去全球变化研究中可能具有大范围的对比性。

Based on the textual research on the high reliable records of historical bibliography of pre Qin Dynasty,four typical climatic events are made clear.According to the archaeological materials such as inscriptions on the bones or tortoise shells(16th～11th century B.C.,Shang Dynasty)and the comparison with ZHU Ke zhen Curve and the δ 18 O records from Dunde Ice Core,the above mentioned climatic events are made sure.It is concluded that the climatic changes in the middle and lower reach plain of the Yellow River displayed a feature of diversity during 5～2 7 kaB.P. The events such as hot dry periods,marine transgressions and dust storms occurred intermittently.The drought was always the most serious natural calamity.And the events spread widely(not locally)and can be used to do correlation to some extent in the researches of past global changes.