干旱区生态环境知识资源中心(Arid): Climate Reconstruction based on Pollen Analysis in Inner Mongolia, North China from 51.9 to 30.6 kaBP

Arid

	Climate Reconstruction based on Pollen Analysis in Inner Mongolia, North China from 51.9 to 30.6 kaBP
	Li Suping; Ferguson David K; Wang Yong; Li Jinfeng; Yao Jianxin
来源期刊	Acta Geologica Sinica
ISSN	1000-9515
出版年	2013
卷号	87 期号:5 页码:1444-1459
英文摘要	The palynomorph assemblage of lake sediments younger than 51.9 kaBP from Wulagai Gobi in Inner Mongolia was analyzed to reconstruct the vegetation and climate.From 51.9 to 30.6kaBP,the vegetation was arid to semi-arid grassland with only slight changes.According to the palynomorphs,trees and shrubs were very rare.The large number and diversity of algae indicate the presence of a lake.Quantitative climatic conditions were reconstructed using the Best Analogues Method.The results indicate that the annual mean temperature was higher than that at present.The combination of temperature and annual precipitation suggests a change in the climate from cool dry to warm dry and then cool humid.Our results show that the annual precipitation values were mostly higher than that at present but were lower than 400 mm.It infers that the study area was already within the arid to semi-arid regions but with a stronger influence of the summer monsoon during 51.9to 30.6 kaBP than at present.With slight differences mainly in time scale,the changing trend of the annual temperature curve is consistent with the other climatic records from Antarctica,Greenland,Hulu Cave(East China),and the Tibetan Plateau during the last glacial period.From 30.6 kaBP to present,very few palynomorphs were detected in the samples.Hence,no information about the vegetation and climate could be extracted.Combined with other studies during Late Pleistocene,we presume that the reason for the lack of pollen during this period was caused by an abrupt temperature fall after 30.6 kaBP or that the lacustrine conditions were unsuitable for pollen deposition.It was probably incurred by the oxidation on land prior to deposition.But for those samples only with algae,it might be caused by the fact that algae could finish their life history in a very short time in a seasonal lake.
英文关键词	paleoclimate paleovegetation pollen analysis Late Pleistocene Inner Mongolia
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:4950587
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335268
作者单位	Li Suping, Institute of Geology, Chinese Academy of Geological Sciences, Key Laboratory of Stratigraphy and Palaeontology, Beijing 100037, China.; Wang Yong, Institute of Geology, Chinese Academy of Geological Sciences, Key Laboratory of Stratigraphy and Palaeontology, Beijing 100037, China.; Yao Jianxin, Institute of Geology, Chinese Academy of Geological Sciences, Key Laboratory of Stratigraphy and Palaeontology, Beijing 100037, China.; Ferguson David K, Institute of Palaeontology, University of Vienna(Austria), Vienna, A-1090, Austria.; Li Jinfeng, Institute of Botany, Chinese Academy of Sciences, State Key Laboratory of Systematic and Evolutionary Botany, Beijing 100093, China.
推荐引用方式 GB/T 7714	Li Suping,Ferguson David K,Wang Yong,et al. Climate Reconstruction based on Pollen Analysis in Inner Mongolia, North China from 51.9 to 30.6 kaBP[J],2013,87(5):1444-1459.
APA	Li Suping,Ferguson David K,Wang Yong,Li Jinfeng,&Yao Jianxin.(2013).Climate Reconstruction based on Pollen Analysis in Inner Mongolia, North China from 51.9 to 30.6 kaBP.Acta Geologica Sinica,87(5),1444-1459.
MLA	Li Suping,et al."Climate Reconstruction based on Pollen Analysis in Inner Mongolia, North China from 51.9 to 30.6 kaBP".Acta Geologica Sinica 87.5(2013):1444-1459.