Spatial variability and long-term change in pollen diversity in Nam Co catchment (central Tibetan Plateau): Implications for alpine vegetation restoration from a paleoecological perspective
文献类型：期刊论文
| 作者 | Li, Quan |
| 刊名 | SCIENCE CHINA-EARTH SCIENCES
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 61期号:3页码:270-284 |
| 关键词 | Pollen diversity Palynological richness Vegetation restoration Nam Co Lake Tibetan Plateau |
| ISSN号 | 1674-7313 |
| DOI | 10.1007/s11430-017-9133-0 |
| 通讯作者 | Li, Quan(liquan@igsnrr.ac.cn) |
| 英文摘要 | Pollen diversity offers abundant clues into the floristic diversity and history of vegetation change. Few palynological studies investigated modern pollen diversity or the past floristic diversity on the Tibetan Plateau (TP). Based on modern pollen assemblages from 37 topsoils and 63 surface lake sediments in the Nam Co catchment on the central TP, this study quantitatively explored spatial distribution of modern pollen diversity using Shannon-Wiener index (H) and palynological richness (E(T (n) ), n=600). Pollen diversity indices showed spatial variability among vegetation types, reflecting the differences in terrestrial floristic diversity in the lake catchment. Their values were high in the southeastern region of the lake catchment which is covered by alpine steppe, while values were low for alpine meadow and marsh meadow. The pollen diversity in lacustrine pollen assemblage could be an effective proxy to document past floristic diversity. The past floristic diversity in the lake catchment, recovered from a fossil pollen record of NMLC-1, showed a long-term change of ascending overlaid by several rapid diversity changes during the last 8400 years due to the downward shift of altitudinal vegetation belt driven by a general climatic cooling. The results imply that under the environmental challenge of climate warming and vegetation degradation, alpine vegetation restoration in the Nam Co catchment and the central TP should pay attention to altitudinal vegetation belt and zonal vegetation of alpine steppe, and use the long-term change of floristic diversity as a historical analogue. |
| WOS关键词 | LAST GLACIAL MAXIMUM ; CHINESE LOESS PLATEAU ; ENVIRONMENTAL-CHANGES ; PLANT DIVERSITY ; CLIMATE-CHANGE ; PALYNOLOGICAL RICHNESS ; LAKE-SEDIMENTS ; WESTERN TIBET ; SOURCE AREA ; 8.4 KABP |
| 资助项目 | National Natural Science Foundation of China[41471169] ; National Natural Science Foundation of China[41690113] ; National Natural Science Foundation of China[41271226] ; National Natural Science Foundation of China[41571189] ; National Natural Science Foundation of China[41330105] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000426574800003 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/57148]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Quan |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Quan. Spatial variability and long-term change in pollen diversity in Nam Co catchment (central Tibetan Plateau): Implications for alpine vegetation restoration from a paleoecological perspective[J]. SCIENCE CHINA-EARTH SCIENCES,2018,61(3):270-284. |
| APA | Li, Quan.(2018).Spatial variability and long-term change in pollen diversity in Nam Co catchment (central Tibetan Plateau): Implications for alpine vegetation restoration from a paleoecological perspective.SCIENCE CHINA-EARTH SCIENCES,61(3),270-284. |
| MLA | Li, Quan."Spatial variability and long-term change in pollen diversity in Nam Co catchment (central Tibetan Plateau): Implications for alpine vegetation restoration from a paleoecological perspective".SCIENCE CHINA-EARTH SCIENCES 61.3(2018):270-284. |
入库方式： OAI收割
来源：地理科学与资源研究所
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