| 黄土高原平凉地区中全新世以来孢粉-植硅体记录对比研究 |
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| 关键词:Pingliang region pollen phytolith |
| 基金项目:中国地质科学院基本科研业务费项目(编号: YWF201411; YYWF201627) |
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| 摘要: |
| Comparative Study of Pollen and Phytolith Records since the Middle Holocene from Pingliang Region of Loess Plateau |
| The dating and analysis of pollen and phytolith were conducted for the sample taken from the Pingliang profile located in Dazhai Village, Pingliang County, Gansu Province, Northwest China. Four types of pollens (i.e., Picea, Pinus, Gramineae and Artemisia) which showed high content and had the typical environmental indication significance were compared with four types of phytoliths (i.e., Fan-shaped, Rectangle, Rhabdolith and Acicula). The results showed that, although the overall trend of climatic environment indicated by pollen and phytolith records was similar, yet there existed some difference. The climatic zone with higher content of pollen well corresponds to phytolith climate zone, reflecting the accurate climate types. When the content of other pollens was low, and pollens with strong transmission capacity and no-representativeness (e.g., Pinus) existed, the accuracy of climatic environment indicated by the pollen was low. However, the content of phytolith in the whole loess profile was higher, so the climate characteristics reflected was more accurate. In contrast to the |
| LIU Lin-jing,YANG Zhen-jing,WANG Pan-li,MAO Xin,JIANG Gao-lei,WANG Cheng-min,LIU Rong-fang,YANG Qing-hua.2017.Comparative Study of Pollen and Phytolith Records since the Middle Holocene from Pingliang Region of Loess Plateau[J].Acta Geoscientica Sinica,38(3):393-402. |
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