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题名: The evolution of Miocene climates in North China: Preliminary results of quantitative reconstructions from plant fossil records
作者: Liu, Yu-Sheng (Christopher)1, 2; Utescher, Torsten3; Zhou, Zhekun4; Sun, Bainian5
刊名: PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
关键词: Fossil plants ; East Asian monsoon ; Miocene ; North China ; Quantitative paleoclimate reconstructions
英文摘要: The Miocene climate evolution in North China is preliminarily discussed by means of comparisons in seven climate parameters quantitatively reconstructed by the Coexistence Approach on 34 selected macro- and microfloras over North China. The Miocene temperatures show no great difference in the western and eastern part of North China. Temperature fluctuations, particularly in mean annual temperature, are found within floras from several sites. The fluctuation pattern, from a climate optimum in the Mid Miocene to cooling decline in the Late Miocene, is generally consistent with the global trend of Miocene temperature change. The reconstructed precipitation from all the sites studied shows much wetter conditions in North China during the Miocene than at present, which corroborates the results from paleoprecipitation proxy of fossil mammals. Like the situation in paleo-temperature, the Miocene precipitation from North China shows no distinct difference between the western and eastern regions. It is suggested that North China, particularly in the western part, was by no means under an arid or semi-arid environment during the Miocene. North China is an ideal region for study of the impact of the East Asian monsoon system, however, the pattern of precipitation change derived from the monsoon index (MSH) and mean annual precipitation (MAP) shows contradictory results. Therefore, there appears no definite conclusion on when the East Asian summer monsoon intensified. Possible reasons for inconsistency in temperature and precipitation changes are discussed. Directions of future work to improve the resolution of climate evolution are also pointed out. (C) 2010 Elsevier B.V. All rights reserved.
出版日期: 2011-05-01
卷号: 304, 期号:3-4, 页码:308-317
DOI标识: 10.1016/j.palaeo.2010.07.004
语种: 英语
ISSN号: 0031-0182
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3986
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.E Tennessee State Univ, Dept Biol Sci, Johnson City, TN 37614 USA
2.E Tennessee State Univ, Don Sundquist Ctr Excellence Paleontol, Johnson City, TN 37614 USA
3.Univ Bonn, Dept Geol, Steinmann Inst, D-53115 Bonn, Germany
4.Acad Sinica, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
5.Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Gansu, Peoples R China

Recommended Citation:
Liu, Yu-Sheng (Christopher); Utescher, Torsten; Zhou, Zhekun; Sun, Bainian.The evolution of Miocene climates in North China: Preliminary results of quantitative reconstructions from plant fossil records,PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2011,304(3-4):308-317
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