| 西昆仑山甜水海24万年以来生态环境演化的孢粉学证据 |
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| 引用本文： | 刘光秀.西昆仑山甜水海24万年以来生态环境演化的孢粉学证据[J].冰川冻土,1998,20(1):21-24. |
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| 作者姓名： | 刘光秀 |
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| 作者单位： | 中国科学院兰州冰川冻土研究所，中国科学院、国家计划委员会地理研究所，中国科学院广州地球化学研究所 |
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| 摘 要： | 西昆仑山甜水海深５６．３２的钻孔岩芯孢粉记录表明，本地区２４０ｋａＢＰ以来，高寒荒漠植被一直占主导地位，但其嶂有草原成分蒿墙加的若干波动，它反映了寒冷干昌气候背影下的湿润温和波动，亦反映了生态环境的脆弱性。
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| 关 键 词： | 生态环境 孢粉记录 甜水海 昆仑山 第四纪 |
Palynological Evidence of Ecological Environment Change Since 240 ka BP for the Tianshuihai Lake, West Kunlun Mountains |
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| Abstract: | Pollen record from a drilling core 56.32 m in depth in the Tianshuihai Lake, West Kunlun Mountains, indicates that alpine desert vegetation is dominant since 240 ka BP in this region, but there are several fluctuations of Artemisia which is main component of steppe, reflecting that there exist several warmer and weter intervals under the cold and dry climate background. According to the changes of pollen kinds and the ratio of Artemisia and Chenopodiaceae (A/C), the pollen record can be divided into 10 zones, showing 10 climatic fluctuations and an ecological environment fragitity in this area. |
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| Keywords: | ecolgical environment pollen record Tianshuihai Lake West Kunlun Mountains |
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