On the fossil pediastrum from the gaoximage section, hunshandak sandy land and its ecological significance since 5000 a bp
文献类型：期刊论文
| 作者 | Xu, ZL; Li, CY; Kong, ZC |
| 刊名 | Acta botanica sinica
 |
| 出版日期 | 2004-10-01 |
| 卷号 | 46期号:10页码:1141-1148 |
| 关键词 | Hunshandak sandy land Since 5 000 a bp Fossil pediastrum |
| ISSN号 | 1672-6650 |
| 通讯作者 | Xu, zl() |
| 英文摘要 | The fossil pediastrum was investigated from the gaoximage section ( 42degrees57'14" n, 115degrees22'3" e, alt 1 253 m) in the hunshandak sandy land, inner mongolia (nei mongol) of china in order to gain a better understanding the changes of palaeovegetation, palaeoenvironment and palaeoclimite since 5 000 abp when the pollen-spore was studied. the results show that the fossil pediastrum assemblage can be divided into three periods: i. 5 000-3 500 a bp, the fossil pediastrum occurred rarely. based on this result it can be surmised that the lake might be fresh water with poor organics. ii. 3 500-1 500 a bp, the fossil pediastrum likes volcanic emerged. it probably indicate moist conditions and the grasslands were developed during this time; and iii. 1 500-200 a bp, the fossil pediastrum disappeared. it can show that the lake water become salty and shrunk, and the weather could become drier and drier. this result shows that pediastrum, a kind of facies fossil, happened simultaneously in the pollen-spore assemblage during the second period. sometimes pediastrum can reach more than 60 per cent of the total spore pollen assemblage, indicating that gaoximage lake was not only fresh water with abundant eutrophic materials but also occupied a large area during 3 500-1 500 a bp. |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences |
| WOS类目 | Biochemistry & Molecular Biology ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000224622100002 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376894 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Xu, ZL |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, ZL,Li, CY,Kong, ZC. On the fossil pediastrum from the gaoximage section, hunshandak sandy land and its ecological significance since 5000 a bp[J]. Acta botanica sinica,2004,46(10):1141-1148. |
| APA | Xu, ZL,Li, CY,&Kong, ZC.(2004).On the fossil pediastrum from the gaoximage section, hunshandak sandy land and its ecological significance since 5000 a bp.Acta botanica sinica,46(10),1141-1148. |
| MLA | Xu, ZL,et al."On the fossil pediastrum from the gaoximage section, hunshandak sandy land and its ecological significance since 5000 a bp".Acta botanica sinica 46.10(2004):1141-1148. |
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来源：中国科学院大学
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