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地质学报  2007 

山西宁武地区全新世以来气候与环境变化

, PP. 316-323

Keywords: 山西宁武,全新世,沉积地层,孢粉分析,气候与环境变化

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Abstract:

根据野外实测剖面、室内测试分析,笔者通过对山西宁武地区全新世以来的湖相沉积地层的孢粉、易溶盐、pH值、磁化率、碳酸盐和粒度分析,探讨了该区全新世以来的气候与环境变化过程。结果表明该区全新世以来的气候变化可划分为4个阶段112400~10000aB.P.期间,显示气候干冷,但有逐渐变暖的趋势;210000~8000aB.P.期间,气候较温湿;38000~3000aB.P.期间,气候温暖;4距今3000aB.P.~现代,气候出现3次波动,整个气候向干凉方向发展。对山西宁武地区湖相沉积地层的进一步深入调查与研究,将会确定华北地区的全新世以来环境与气候变化的基本规律。

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