山西宁武地区全新世以来气候与环境变化  

Paleoclimatic and Plaeoenvironmental Evolution Since Holocene in the Ningwu Area, Shanxi Province

作　　者：孟宪刚[1] 朱大岗[1] 邵兆刚[1] 韩建恩[1] 余佳[1] 孟庆伟[1] 吕荣平[1] 罗鹏[2] 

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]长安大学,西安710054

出　　处：《地质学报》2007年第3期316-323,共8页Acta Geologica Sinica

基　　金：地质大调查项目:中国地质调查局项目"山西宁武万年冰洞形成机制及其环境意义"(任务书编号:科[2005]005-03;工作项目编码:1212010511903)的阶段性研究成果。

摘　　要：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；⑧8000-3000aB．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。By measured section in the field and test analysis in the lab, the authors make sure the lacustrine facies sedimentary stratums since Holocene in Ningwu Shanxi province, and discuss the change of climate and enviroment by analysing sporopollen, eutectic salt, pH value, susceptibility, carbonate and granularity. The research indicates that the change of climate is partitioned 4 phases since Holocene ： （1）During 12400- 10000aB. P. , it indicates the climate was dry and cold, but it became warm gradully ; （2）During 10000 - 8000aB. P. , the climate was warm and wet ;（3）During 8000~ 3000aB. P. ,the climate was warm; （4）Since 3000aB. P. ,the climate fluctuated 3 time, and became dry and cold. By the deep investigation of lacustrine facies sedimentary stratums in Ningwu Shanxi province we will make sure the fundamental laws of climate and environmeng changing since Holocene in Huabei area.

关 键 词：山西宁武 全新世 沉积地层 孢粉分析 气候与环境变化 

分 类 号：P467[天文地球—大气科学及气象学]