Late Pliocene temperatures and their spatial variation at the southeastern border of the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Zhou, Zhe-Kun ; Su, Tao
|
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2015 |
| 卷号 | 111期号:\页码:44-53 |
| 关键词 | Late Pliocene Palaeoclimatic reconstruction Temperature Precipitation Qinghai-Tibet Plateau Coexistence Approach |
| ISSN号 | 1367-9120 |
| 中文摘要 | It is widely accepted that the late Pliocene spans a time with globally warmer conditions compared to today. Regional specifics in temperature patterns from this period, however, remain poorly known. In this study, we reconstruct quantitatively late Pliocene climates for eight sites at the southeastern border of the Qinghai-Tibet Plateau (SBTP), based on palaeobotanical data compiled from published sources using the Coexistence Approach (CoA), and analyze anomalies with respect to modern climates. The reconstructed temperatures indicate that in the late Pliocene, the northwestern part of the study area was cooler than its southern part. This spatial differentiation in temperature was largely due to differences in altitude: the northwest of the SBTP probably had higher altitudes than the south at that time. Mean annual temperatures (MATS) were around 1 degrees C higher than today, suggesting a cooling trend since the late Pliocene. Our data show that summer temperatures have declined significantly since the late Pliocene while winter temperatures have remained similar to those of the present, different from observations in other territories. The unexpected summer and winter temperature changes can be explained by the regional orogenic uplift plus the global cooling. The eastward extrusion of the Qinghai-Tibet Plateau might have blocked the southward cold high pressure of the winter monsoon and forced it to circumvent the eastern flank of the plateau, weakening its impact on the SBTP. The post-Pliocene mountain uplift increased the overall altitude of the region, which caused the temperature decline for both summer and winter. The reconstructed summer precipitation was lower while the winter precipitation was higher than today, suggesting a weaker monsoon climate during the late Pliocene. (C) 2015 Elsevier Ltd. All rights reserved. |
| 资助信息 | National Natural Science Foundation of China, NNSFC [31300187, 41030212]; National Basic Research Program of China, 973 Program [2012CB821900]; U.S. DOE [DE-AC02-06CH11357]; Foundation of the State Key Laboratory of Palaeobiology and Stratigraphy; Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences [123107]; German Science Foundation |
| 原文出处 | 10.1016/j.jseaes.2015.04.048 |
| 语种 | 英语 |
| 公开日期 | 2015-11-19 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/9345]  |
| 专题 | 西双版纳热带植物园_古生态研究组 |
| 通讯作者 | Zhou, Zhe-Kun |
| 推荐引用方式 GB/T 7714 | Zhou, Zhe-Kun,Su, Tao. Late Pliocene temperatures and their spatial variation at the southeastern border of the Qinghai-Tibet Plateau[J]. JOURNAL OF ASIAN EARTH SCIENCES,2015,111(\):44-53. |
| APA | Zhou, Zhe-Kun,&Su, Tao.(2015).Late Pliocene temperatures and their spatial variation at the southeastern border of the Qinghai-Tibet Plateau.JOURNAL OF ASIAN EARTH SCIENCES,111(\),44-53. |
| MLA | Zhou, Zhe-Kun,et al."Late Pliocene temperatures and their spatial variation at the southeastern border of the Qinghai-Tibet Plateau".JOURNAL OF ASIAN EARTH SCIENCES 111.\(2015):44-53. |
入库方式： OAI收割
来源：西双版纳热带植物园
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。