Knowledge Resource Center for Ecological Environment in Arid Area
| Solar forcing of desert vegetation and drought frequency during the last 2700 years in the interior Qaidam Basin,northeastern Tibetan Plateau | |
| Li Quan | |
| 来源期刊 | Science China. Earth Sciences
 |
| ISSN | 1674-7313 |
| 出版年 | 2020 |
| 卷号 | 63期号:4页码:561-574 |
| 英文摘要 | Knowledge of long-term change in vegetation and climate in semi-arid/arid regions is essential for the study of current climate and development of mitigation strategies against severe drought.Here,a fossil pollen record of annually-varved core from Sugan Lake in interior Qaidam Basin was quantitatively analyzed to reconstruct changes in vegetation,floristic diversity and drought frequency.Results of biomization suggested that regional vegetation was desert vegetation with three short-term occupations of temperate steppe/xerophytic shrub during the last 2700 years.Floristic diversity generally increased/decreased with the expansion/degradation of desert vegetation.Moisture fluctuations showed three distinct stages (extremely dry between 742BC and ~AD500,relatively wet with an increasing trend between ~AD500 and 1200 and relatively wet with frequent fluctuations after AD1200),interrupted by 14 drought events.Spectral analysis and continuous wavelet transform of moisture variation revealed 200- and 120-year cycles.According to cross-wavelet transform analysis,major drought frequency of ~200-year was explicitly correlated to solar activity.Its suggested that the centennial-scale drought frequency was mainly driven by solar activity,through modulation of large-scale atmospheric circulation.Furthermore,the effect of surface temperature- evaporation and uplifting/subsiding air flow should be notable.The climatic drought in interior Qaidam Basin could be intensified under the continuous global warming. |
| 英文关键词 | Pollen Vegetation change Drought frequency Qaidam Basin Northeastern Tibetan Plateau |
| 类型 | Article |
| 语种 | 英语 |
| 收录类别 | CSCD |
| WOS研究方向 | Geology |
| CSCD记录号 | CSCD:6691360 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/336268 |
| 作者单位 | Li Quan, Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences, Key Laboratory of Land Surface Pattern and Simulation,China Earthquake Administration, Beijing 100101, China. |
| 推荐引用方式 GB/T 7714 | Li Quan. Solar forcing of desert vegetation and drought frequency during the last 2700 years in the interior Qaidam Basin,northeastern Tibetan Plateau[J],2020,63(4):561-574. |
| APA | Li Quan.(2020).Solar forcing of desert vegetation and drought frequency during the last 2700 years in the interior Qaidam Basin,northeastern Tibetan Plateau.Science China. Earth Sciences,63(4),561-574. |
| MLA | Li Quan."Solar forcing of desert vegetation and drought frequency during the last 2700 years in the interior Qaidam Basin,northeastern Tibetan Plateau".Science China. Earth Sciences 63.4(2020):561-574. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Li Quan]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Li Quan]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Li Quan]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
