Utility of Surface Pollen Assemblages to Delimit Eastern Eurasian Steppe Types
文献类型：SCI/SSCI论文
| 作者 | Qin F.; Wang, Y. F.; Ferguson, D. K.; Chen, W. L.; Li, Y. M.; Cai, Z.; Wang, Q.; Ma, H. Z.; Li, C. S. |
| 发表日期 | 2015 |
| 关键词 | past cultural landscapes apg iii vegetation china mongolia climate precipitation grasslands families transect |
| 英文摘要 | Modern pollen records have been used to successfully distinguish between specific prairie types in North America. Whether the pollen records can be used to detect the occurrence of Eurasian steppe, or even to further delimit various steppe types was until now unclear. Here we characterized modern pollen assemblages of meadow steppe, typical steppe and desert steppe from eastern Eurasia along an ecological humidity gradient. The multivariate ordination of the pollen data indicated that Eurasian steppe types could be clearly differentiated. The different steppe types could be distinguished primarily by xerophilous elements in the pollen assemblages. Redundancy analysis indicated that the relative abundances of Ephedra, Tamarix, Nitraria and Zygophyllaceae were positively correlated with aridity. The relative abundances of Ephedra increased from meadow steppe to typical steppe and desert steppe. Tamarix and Zygophyllaceae were found in both typical steppe and desert steppe, but not in meadow steppe. Nitraria was only found in desert steppe. The relative abundances of xerophilous elements were greater in desert steppe than in typical steppe. These findings indicate that Eurasian steppe types can be differentiated based on recent pollen rain. |
| 出处 | Plos One |
| 卷 | 10 |
| 期 | 3 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1932-6203 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38816]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Qin F.,Wang, Y. F.,Ferguson, D. K.,et al. Utility of Surface Pollen Assemblages to Delimit Eastern Eurasian Steppe Types. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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