Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years
文献类型：期刊论文
| 作者 | Zhou, WJ; Dodson, J; Head, MJ; Li, BS; Hou, YJ; Lu, XF; Donahue, DJ; Jull, AJT |
| 刊名 | HOLOCENE
 |
| 出版日期 | 2002-01 |
| 卷号 | 12期号:1页码:107-112 |
| 关键词 | human impact natural environment Loess Plateau desert-loess boundary monsoons desertification China |
| DOI | 10.1191/0959683602hl525rr |
| 文献子类 | Article |
| 英文摘要 | The desert/loess transition zone in northern China is sensitive to climate variability, which is controlled mainly by the relative strengths of the East Asian summer and winter monsoons. Sandy loess layers found in the Loess Plateau and palaeosol sequences found in the sandy desert demonstrate latitudinal shifts of the Southern desert margin over the last 20000 years. Stratigraphic investigations together with radiocarbon and some thermoluminescence dating, show that during the last glacial maximum the desert margin was at its most southerly position (38 degreesN). During the early Holocene, it moved northward about three degrees in latitude (41 degreesN). At present. the desert margin is again close to its most southerly position (38 degrees 21'N), yet the northern boundary position of modern summer monsoon activity is placed at 41 degrees 45'N. which is close to the estimated Holocene Optimum desert margin (41 degreesN). This situation cannot be explained from natural climate models. Hence, an external driving mechanism needs to be considered, and the most obvious one is that caused by human activity on the natural environment over the last 3000 years. Historical evidence tends to reinforce this consideration. |
| 学科主题 | Physical Geography ; Geology |
| WOS关键词 | MONSOON CLIMATE ; EAST-ASIA ; PALEOSOLS ; SEQUENCES ; EVENT |
| WOS研究方向 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000172904400011 |
| 出版者 | ARNOLD, HODDER HEADLINE PLC |
| 源URL | [http://ir.ieecas.cn/handle/361006/11928]  |
| 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 | Zhou, WJ,Dodson, J,Head, MJ,et al. Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years[J]. HOLOCENE,2002,12(1):107-112. |
| APA | Zhou, WJ.,Dodson, J.,Head, MJ.,Li, BS.,Hou, YJ.,...&Jull, AJT.(2002).Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years.HOLOCENE,12(1),107-112. |
| MLA | Zhou, WJ,et al."Environmental variability within the Chinese desert-loess transition zone over the last 20 000 years".HOLOCENE 12.1(2002):107-112. |
入库方式： OAI收割
来源：地球环境研究所
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。