Paleoclimatic estimation reveals a weak winter monsoon in southwestern China during the late Miocene: Evidence from plant macrofossils
Xing, Yaowu1,3; Utescher, Torsten4; Jacques, Frederic M. B.1; Su, Tao1; Liu, Yusheng (Christopher)5; Huang, Yongjiang2,6; Zhou, Zhekun1,2
2012-11-01
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号358页码:19-26
摘要The late Miocene Xianfeng flora of Yunnan Province, southwestern China, was chosen to reconstruct the paleoclimate and the intensity of the Asian monsoon. Three available quantitative climate reconstruction methods from fossil plants, i.e. Leaf Margin Analysis (LMA), the Climate Leaf Analysis Multivariate Program (CLAMP), and the Coexistence Approach (CA) were used in this study. MATs (mean annual temperatures) resulting from these three approaches (i.e., LMA: 17.2 +/- 2.38 degrees C; CLAMP: 15.43 +/- 1.25 degrees C; CA: 17.2-21.7 degrees C) appear to have been higher than the present (14.9 degrees C), suggesting a much warmer climate in the late Miocene. Both the growing season precipitation (GSP) from CLAMP (1908.7 +/- 217.7 mm) and mean annual precipitation (MAP) from CA (1206.0-1613.0 mm) estimates are higher than modern values (1003.2 mm (GSP) and 1038 mm (MAP) respectively) indicating a more humid climate during the late Miocene. By comparing these with climates reconstructed from neighboring late Miocene floras, we conclude that the general late Miocene climate appears warmer and more humid than present conditions in southwestern China. Furthermore, the evident differences in estimated monthly temperatures between the summer and winter, and precipitations between the humid and dry seasons indicate the existence of seasonality, though not as strong as that of today. Difference in precipitation of dry season indicates a marked strengthening in the winter monsoon since the late Miocene. A new monsoon intensity index has also been defined based on precipitation seasonality to investigate the intensity of the Asian monsoon. (C) 2012 Elsevier B.V. All rights reserved.
关键词Paleoclimate Late Miocene Precipitation Seasonality Monsoon Intensity Index Southwestern China
资助信息National Natural Science Foundation of China [30972026, 41030212]; National Key Basic Research Program (973) [2012CB821900-G]
DOI10.1016/j.palaeo.2012.07.011
收录类别SCI
语种英语
WOS研究方向Physical Geography ; Geology ; Paleontology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:000309434300002
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被引频次:37[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/15766
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biogeog & Biodivers, Kunming 650204, Peoples R China
3.Univ Zurich, Inst Systemat Bot, CH-8008 Zurich, Switzerland
4.Univ Bonn, Steinmann Inst, D-53115 Bonn, Germany
5.E Tennessee State Univ, Dept Biol Sci, Johnson City, TN 37614 USA
6.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Xing, Yaowu,Utescher, Torsten,Jacques, Frederic M. B.,et al. Paleoclimatic estimation reveals a weak winter monsoon in southwestern China during the late Miocene: Evidence from plant macrofossils[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2012,358:19-26.
APA Xing, Yaowu.,Utescher, Torsten.,Jacques, Frederic M. B..,Su, Tao.,Liu, Yusheng .,...&Zhou, Zhekun.(2012).Paleoclimatic estimation reveals a weak winter monsoon in southwestern China during the late Miocene: Evidence from plant macrofossils.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,358,19-26.
MLA Xing, Yaowu,et al."Paleoclimatic estimation reveals a weak winter monsoon in southwestern China during the late Miocene: Evidence from plant macrofossils".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 358(2012):19-26.
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