Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41371009 |
| 风成沉积环境与水循环对流域性千年尺度气候变化的响应——以石羊河流域为例 | |
| 李育 | |
| 主持机构 | 兰州大学 |
| 开始日期 | 2014 |
| 结束日期 | 2017 |
| 资助经费 | 850000(CNY) |
| 项目类别 | 面上项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | Along with the development of the past global change research, paleoclimate reconstruction is not limited to some simple environmental factors, such as temperature and humidity. Investigations into various deposition processes in key areas are helpful to explore the mechanism of long-term climate change. In arid and semi-arid areas, the basin-wide hydrologic cycle and aeolian depositional environment are closely linked, while aeolian and lacustrine sediments can reconstruct millennial-scale climate change information regarding aeolian environment and hydrologic cycle, respectively. A comparative study of the Holocene basin-wide eolian and lacustrine sediments can contribute to our understanding of millennial-scale aeolian depositional environment and hydrologic cycle changes and their relationships. The project intends to select the Shiyang River drainage basin, in the Eastern Hexi Corridor, to compare Holocene eolian sediments in the upper reaches with lacustrine sediments in the mid and lower reaches, and then examines the responses of aeolian environment and hydrologic cycle to millennial-scale climate change. The Youth Fund of the applicant and previous studies focused on the Holocene environmental changes in the terminal lake area of the Shiyang River. Dating methods, including Optically Stimulated Luminescence(OSL), pollen concentrates and charcoals AMS 14C, will be used in this study. Proxies, such as lithology, grain size, pollen and geochemical indicators, will also be completed for samples of aeolian and lacustrine sediments. This study extends the millennial-scale climate change research from the terminal area to the mid and upper reaches, which will complement and expand the long-term climate change comparative research. |
| 中文关键词 | 气候变化 ; 风成沉积物 ; 湖泊沉积物 ; 全新世 ; 千年尺度 |
| 来源机构 | 兰州大学 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/345572 |
| 推荐引用方式 GB/T 7714 | 李育.风成沉积环境与水循环对流域性千年尺度气候变化的响应——以石羊河流域为例.2014. |
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