|
|||||
|
|
| A high-resolution late Pleistocene record of pollen vegetation and climate change from Jingning, NW China | |
| 摘 要： | During the late Pleistocene, a number of climatic fluctuations such as the Heinrich events were recorded in the climatic proxies in the Loess Plateau and in North China1―7]. Most of these records were based on geophysical and geochemical evidence1―4]. Therefore, more biologic evidence is necessary for explaining the regional ecosystems in response to climatic change in the Loess Plateau during this period since pollen re-cords in other areas presented strong evidence to cli-matic fluctu… |
| 收稿时间： | 8 May 2004 |
| 修稿时间： | 26 July 2005 |
A high-resolution late Pleistocene record of pollen vegetation and climate change from Jingning, NW China |
|
| Authors: | LI Chunhai TANG Lingyu FENG Zhaodong ZHANG Hucai WANG Weiguo AN Chenbang |
| Institution: | 1. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China;Nanjng Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China 2. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China 3. Environment and Resources College, Lanzhou University, Lanzhou 730000, China;Beijing Normal University, Beijing 100875, China 4. Nanjng Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China 5. Environment and Resources College, Lanzhou University, Lanzhou 730000, China |
| Abstract: | With the support of 18 AMS-14C data, a high-resolution pollen record from the Suancigou section at Jingning, Gansu Province was established. Our results showed that the vegetation experienced a series of changes characterized by the alternative growth and decline of forest and steppe components during the period from 44.2 to 11 ka B.P. in the Jingning area. Over the period of 44–29 ka B.P. (MIS3), coniferous forests were flourishing, indicating a humid climate with the temperature being lower than that of the present. Since 23 ka B.P., the vegetation was dominated by steppe-desert steppe under a cold and dry condition, and entered the Last Glacial Maximum dominated by desert steppe. Several periods of the marked decrease in the arborous pollen content in Suancigou well corresponded to the North Atlantic Heinrich events, especially to Heinrich event 3, further supporting that the Heinrich events were well reflected by the pollen record in the Loess Plateau as well. |
| Keywords: | Western Loess Plateau pollen record climatic change late Pleistocene |
| 本文献已被 万方数据 SpringerLink 等数据库收录！ | |