| 中国第四纪晚更新世晚期以来冰缘环境 |
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| 引用本文： | 崔之久,宋长青.中国第四纪晚更新世晚期以来冰缘环境[J].地球科学进展,1993,8(2):1-8. |
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| 作者姓名： | 崔之久 宋长青 |
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| 作者单位： | 北京大学地理系 100871
(崔之久)，中国科学院植物研究所 100093(宋长青) |
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| 摘 要： | 本文根据古植被、古动物的间接标志以及冰缘现象等直接标志为依据,认为把我国晚更新世多年冻土南界划到北纬39—40°最为合适。进入全新世中国北方的气候出现过明显的波动和干湿变化,在高温期时气温较现在高1—2℃,在小冰期气温较现在低2.0—2.5℃。这些变化对植被和动物的生存、迁移以及人类活动产生深刻的影响。此外,多年冻土下限和雪线高度与现代相比有明显的变化。
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| 关 键 词： | 晚更新世 冰缘环境 石线 多年冻土下限 |
| 收稿时间： | 1992-04-10 |
| 修稿时间： | 1992-10-26 |
THE PERIGLACIAL ENVIRONMENT SINCE THE LATE PERIOD OF LATE PLEISTOCENE IN CHINA |
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| Cui Zhijiu.THE PERIGLACIAL ENVIRONMENT SINCE THE LATE PERIOD OF LATE PLEISTOCENE IN CHINA[J].Advance in Earth Sciences,1993,8(2):1-8. |
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| Authors: | Cui Zhijiu |
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| Institution: | 1.Department of Geography; Peking University; 100871; 2.Institute of Botany; Academia Sinica; 100093 |
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| Abstract: | Using paleobotanic and paleofauna data as indirect evidence and periglacial data as direct evidence, we believe that the southern limit of permafrost was located at 39 - 40°N, the climate changed considerably both in the temperature and precipitation, which greatly influenced the migration and distribution of botany, fauna hunam beings during Holocene. The temperaure is 1 - 2 C higher during Hypsitherma and 2. 0 - 2. 5 C lower during little ice than today. In addation, the lower limit of permafrost and highth of mountain snow line changed obiviously to today. |
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| Keywords: | Late Pleistocene periglacial environment stone line lower limit of permafrost |
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