| 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, 兰州 730000 |
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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 |
| 收稿时间： | 1993-06-16 |
| 修稿时间： | 1994-07-11 |
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]. ournal of Desert Research, 1995, 15(1): 37-41 |
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| Authors: | Shao Yajun Li Baosheng |
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| Affiliation: | Institute of Desert Research, Academia Sinica, Lanzhou, 730000 |
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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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