globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.11.014
论文题名:
The first fossil record of ring-cupped oak (Quercus L. subgenus Cyclobalanopsis (Oersted) Schneider) in Tibet and its paleoenvironmental implications
作者: Xu H.; Su T.; Zhang S.-T.; Deng M.; Zhou Z.-K.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 442
起始页码: 61
结束页码: 71
语种: 英语
英文关键词: Cyclobalanopsis ; Leaf ; Miocene ; Paleoclimate ; Qinghai-Tibetan Plateau ; Uplift
英文摘要: Some taxa are good indicators of particular climates because their distribution is determined by specific temperature or precipitation requirements. Ring-cupped oaks (Quercus L. subgenus Cyclobalanopsis (Oersted) Schneider) are mainly distributed in tropical and subtropical climates in southeastern and eastern Asia. Recently, we collected many leaf fossils of ring-cupped oaks from the Upper Miocene Lawula Formation of eastern Tibet at an elevation of 3910 m. No modern species of ring-cupped oaks could survive at such a high elevation under current climate conditions. Based on detailed morphological comparisons with extant and fossil species, we propose a new species, Quercus tibetensis H. Xu, T. Su et Z.K. Zhou sp. nov., representing the first fossil record of ring-cupped oaks in Tibet. We investigated the climate requirements of the nearest living relatives (NLRs) of Q. tibetensis, and the ranges of mean annual temperature (MAT) and mean annual precipitation (MAP) are 7.9. °C to 21.7. °C, and 733.0. mm to 2536.8. mm, respectively, compared with the current climate at the fossil site with MAT of 4.4. °C and MAP of 516.5. mm. The NLRs of Q. tibetensis are distributed at elevations from 70. m to 3000. m, much lower than the fossil locality (3910 m). The altitudinal difference of the fossil site is 161. m to 3091. m between the late Miocene and today, even considering the warmer global climate during the late Miocene. Our results indicate that the climate conditions at the fossil site during the late Miocene were warmer and more humid than the current climate. Meanwhile, this new fossil finding corroborates results from previous studies that the southeastern part of the Qinghai-Tibetan Plateau experienced continued uplift since the late Miocene. © 2015 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68619
Appears in Collections:过去全球变化的重建

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作者单位: Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, China; Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China; University of Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing, China; Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, China; Shanghai Chengshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai, China

Recommended Citation:
Xu H.,Su T.,Zhang S.-T.,et al. The first fossil record of ring-cupped oak (Quercus L. subgenus Cyclobalanopsis (Oersted) Schneider) in Tibet and its paleoenvironmental implications[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,442
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