Ecologic shift and aridification in the northern Tibetan Plateau revealed by leaf wax n-alkane delta H-2 and delta C-13 records
文献类型：期刊论文
| 作者 | Wu, Minghao1; Zhuang, Guangsheng1; Hou, Mingqiu1; Miao, Yunfa2 |
| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2019-01-15 |
| 卷号 | 514页码:464-473 |
| 关键词 | Qaidam Basin Paleoclimate Paleoecology Stable isotope Tectonic uplift Global cooling |
| ISSN号 | 0031-0182 |
| DOI | 10.1016/j.palaeo.2018.11.005 |
| 通讯作者 | Zhuang, Guangsheng(gzhuang@lsu.edu) |
| 英文摘要 | Two competing factors, the global cooling and the uplift of Tibetan Plateau, have been proposed to drive the central Asian aridification, but their relative role has seldom been discriminated in paleoclimate and paleoenvironment records. Here, we reconstruct a 14-million-year-long record of paleohydrology and paleoecology in the western Qaidam Basin by applying the compound-specific hydrogen (delta H-2) and carbon (delta C-13) isotope analyses to terrestrial leaf wax long-chain n-alkanes. The delta H-2 values are low during the interval of 14.6 to 13.0 Ma. Then the delta H-2 increases from 13.0 to 12.2 Ma and maintains high values from 12.2 to 3.2 Ma with a peak high value of -156.1 parts per thousand at 8.0 Ma. After 3.2 Ma, the delta H-2 values are low and vary larger than 30 parts per thousand. The delta C-13 values decrease from 14.6 to 13.0 Ma and are low from 13.0 to 3.2 Ma except a high value at 3.8 Ma. Then they decrease slightly after 3.2 Ma. Low delta H-2 values indicate relatively wet climate between 14.6 and 13.0 Ma. The decreasing delta C-13 values during the same time period support the ecologic shift with the decline of warm component of conifers after the Mid-Miocene Climatic Optimum. High delta H-2 values since 13.0 Ma are synchronous with the uplift of northern Tibetan Plateau, implying tectonics-driven aridity. Large-amplitude variation in delta H-2 values since ca. 3.2 Ma seen in East and West Qaidam and lower delta C-13 values reveal the climatic cyclic responses to the Northern Hemisphere Glaciation. |
| 收录类别 | SCI |
| WOS关键词 | WESTERN QAIDAM BASIN ; STABLE-ISOTOPE COMPOSITION ; MIDDLE MIOCENE ; CENTRAL-ASIA ; CLIMATE-CHANGE ; INTENSIFIED ARIDITY ; TECTONIC UPLIFT ; QILIAN SHAN ; SEDIMENTARY RECORDS ; TOPOGRAPHIC GROWTH |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:000456355800035 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558202 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhuang, Guangsheng |
| 作者单位 | 1.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Minghao,Zhuang, Guangsheng,Hou, Mingqiu,et al. Ecologic shift and aridification in the northern Tibetan Plateau revealed by leaf wax n-alkane delta H-2 and delta C-13 records[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,514:464-473. |
| APA | Wu, Minghao,Zhuang, Guangsheng,Hou, Mingqiu,&Miao, Yunfa.(2019).Ecologic shift and aridification in the northern Tibetan Plateau revealed by leaf wax n-alkane delta H-2 and delta C-13 records.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,514,464-473. |
| MLA | Wu, Minghao,et al."Ecologic shift and aridification in the northern Tibetan Plateau revealed by leaf wax n-alkane delta H-2 and delta C-13 records".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 514(2019):464-473. |
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来源：寒区旱区环境与工程研究所
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