ENVIROMENTAL CHANGES RECORDED BY POLLEN SINCE MID TO LATE HOLOCENE IN HUITENGXILE LAKE, LNNER MONGOLIA

ZHAO Zhi-li; WANG Yong; CHI Zhen-qing; GUAN You-yi; YAO Pei-yi

2011 Vol. 17, No. 1

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ZHAO Zhi-li, WANG Yong, CHI Zhen-qing, GUAN You-yi, YAO Pei-yi. ENVIROMENTAL CHANGES RECORDED BY POLLEN SINCE MID TO LATE HOLOCENE IN HUITENGXILE LAKE, LNNER MONGOLIA[J]. Journal of Geomechanics, 2011, 17(1): 103-110.

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ZHAO Zhi-li, WANG Yong, CHI Zhen-qing, GUAN You-yi, YAO Pei-yi. ENVIROMENTAL CHANGES RECORDED BY POLLEN SINCE MID TO LATE HOLOCENE IN HUITENGXILE LAKE, LNNER MONGOLIA[J]. Journal of Geomechanics, 2011, 17(1): 103-110.

ENVIROMENTAL CHANGES RECORDED BY POLLEN SINCE MID TO LATE HOLOCENE IN HUITENGXILE LAKE, LNNER MONGOLIA

Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China

Received Date: 07 December 2010

Publish Date: 25 March 2011

Abstract

Abstract

Sedimentary features and sporopollen assemblages from Huitengxile Lake located in central Inner Mongolia Autonomous Region were used to reconstruct the processes of climatic and environmental changes during mid to late Holocene. The results showed that the climate on the whole shifted from warm and humid to cold and arid over the last 5390 a, and that could be divided into 5 stages in detail: ① from 5390 a to 3970 a, the climate was warm and humid; ② from 3970 a to 3300 a, the climate was moderate and humid; ③ from 3300 a to 2380 a, the obvious drop of A/C ratio indicated the end of Megathermal, the climate was cool and arid; ④ from 2380 a to 1160 a, the climate varied to cool and humid, which was a special humid period after Megathermal. ⑤ Since 1160 a, it has been mild cool and arid.
- sporopollen assemblage /
- environmental changes /
- Holocene /
- sedimentary environment

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References

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