| 克里雅河上游流域黄土中孢粉组合与环境 |
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| 引用本文： | 邵亚军,李保生.克里雅河上游流域黄土中孢粉组合与环境[J].中国沙漠,1995,15(1):37-41. |
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| 作者姓名： | 邵亚军 李保生 |
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| 作者单位： | 中国科学院兰州沙漠研究所 |
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| 摘 要： | 对克里雅河上游流域末次冰期以来形成的两个黄土剖面１３块样品进行了孢粉分析。分析结果表明，末次冰期以来该区黄土堆积的植被类型主要是以耐旱的麻黄（Ｅｐｈｅｄｒａ）、藜（Ｃｈｅｎｏｐｏｄｉａｃｅａｅ）、蒿（Ａｒｔｅｍｉｓｉａ）等草本植物为主，属荒漠草原类型。但期间也出现过具有一定含量的云杉（Ｐｉｃｅａ）、冷杉（Ａｂｉｅｓ）、松属（Ｐｉｎｕｓ）等针叶树花粉，显示出疏林草原环境。由此表明，从那时以来的黄土堆积过程中，在总的持续干旱的荒漠草原环境下也存在相对的干湿波动。
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| 关 键 词： | 克里雅河上游流域，黄土孢子花粉，荒漠草原植被，干旱环境 |
SPORO-POLLEN ASSEMBLAGE IN THE LOESS OF UPPER REACH OF THE KERIYA RIVER AND ITS ENVIRONMENT |
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| Shao Yajun, Li Baosheng.SPORO-POLLEN ASSEMBLAGE IN THE LOESS OF UPPER REACH OF THE KERIYA RIVER AND ITS ENVIRONMENT[J].Journal of Desert Research,1995,15(1):37-41. |
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| Authors: | Shao Yajun Li Baosheng |
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| Abstract: | The sporo-pollens have been analysed in two Loess sections located respectively at 3 150m and 4250 m a. s.l.in the upper reach of the Keriya River. From this it has demonstrated that sincethe last glacial age the vegetation in the area have been dominated by the desert-steppe herbs composedof drought-resistant Ephedra,chenopodiaceae and Artemisea etc.However,there were also a certainamount of Picea,Abies and Pinus in two sections which showed a sparse-tree steppe environment.Thesesuggest that there were relative dry and humid fluctuations occurred in the persistent arid desert-steppeenvironment during the processes of loess formation. |
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| Keywords: | Upper reach of Keriya River Loess sporo-pollens Desert-steppe vegetation |
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