克里雅河上游流域黄土中孢粉组合与环境

摘要/Abstract

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。

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

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 since the last glacial age the vegetation in the area have been dominated by the desert-steppe herbs composed of drought-resistant Ephedra,chenopodiaceae and Artemisea etc.However,there were also a certain amount of Picea,Abies and Pinus in two sections which showed a sparse-tree steppe environment.These suggest that there were relative dry and humid fluctuations occurred in the persistent arid desert-steppe environment during the processes of loess formation.

Key words: Upper reach of Keriya River, Loess sporo-pollens, Desert-steppe vegetation

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.

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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克里雅河上游流域黄土中孢粉组合与环境

SPORO-POLLEN ASSEMBLAGE IN THE LOESS OF UPPER REACH OF THE KERIYA RIVER AND ITS ENVIRONMENT

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