Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau
文献类型：期刊论文
| 作者 | Wu, HB; Guo, ZT; Fang, XM; Zhang, JW; Chen, FH |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2002-10 |
| 卷号 | 47期号:20页码:1739-1745 |
| 关键词 | aridification loess-paleosol sequences organic carbon isotope chemical weathering intensity Tibetan Plateau |
| DOI | 10.1360/02tb9381 |
| 文献子类 | Article |
| 英文摘要 | Study on two loess sections, one located at Wuwei near the Tengger Desert in northwestern China, another located near Ganzi at the southeast margin of the Tibetan Plateau in southwest China, reveals a coeval drying step occurred at similar to250 kaBP. It is expressed by the increase in eolian grain-size at Wuwei, and by a drastic extension of C4 plants and a decrease of loess chemical weathering intensity at Ganzi. Examination of the available eolian data indicates that the event has also been clearly documented in the loess sections near the deserts in northern China, and in the eolian records from the North Pacific. On the contrary, the signal is rather weak for the central and southern Loess Plateau regions as well as for Central Asia, where the climates are influenced by the southeast Asian monsoon and the westerlies, respectively. Since the climate at Ganzi is under strong control of the southwest Asian monsoon, we interpret this drying step as a result of decreased influence of the southwest summer monsoon. This decrease in monsoon moisture is attributable to the uplift of the Hengduan Mountains, the southeast margin of the Tibetan Plateau at similar to250 ka ago. |
| 学科主题 | Science & Technology - Other Topics |
| WOS关键词 | LOESS ; CLIMATE ; MA ; PALEOMAGNETISM ; MOUNTAINS ; PLIOCENE ; PALEOSOL ; PACIFIC ; DESERT |
| WOS研究方向 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000178433900015 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.ieecas.cn/handle/361006/12049]  |
| 专题 | 黄土与第四纪地质国家重点实验室（1985-2004） |
| 推荐引用方式 GB/T 7714 | Wu, HB,Guo, ZT,Fang, XM,et al. Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau[J]. CHINESE SCIENCE BULLETIN,2002,47(20):1739-1745. |
| APA | Wu, HB,Guo, ZT,Fang, XM,Zhang, JW,&Chen, FH.(2002).Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau.CHINESE SCIENCE BULLETIN,47(20),1739-1745. |
| MLA | Wu, HB,et al."Extension of drylands in northern China around 250 kaBP linked with the uplift of the southeast margin of Tibetan Plateau".CHINESE SCIENCE BULLETIN 47.20(2002):1739-1745. |
入库方式： OAI收割
来源：地球环境研究所
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