| 我国冲积平原区洪水事件重建研究进展及展望 |
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| 引用本文： | 杨劲松,王永,尹金辉,赵华,刘哲,姜高磊,张鹏,戚甲豪.我国冲积平原区洪水事件重建研究进展及展望[J].地球科学,2022,47(11):3944-3959. |
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| 作者姓名： | 杨劲松 王永 尹金辉 赵华 刘哲 姜高磊 张鹏 戚甲豪 |
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| 作者单位： | 1.中国地震局地质研究所地震动力学国家重点实验室, 北京 100029 |
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| 基金项目： | 河北省自然科学基金项目D2020504008国家自然科学基金项目41807428中国地质调查局中国地质科学院基本科研业务费项目SK202115 |
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| 摘 要： | 冲积平原作为城市聚集和人类发展的重要区域，长期面临着巨大的洪水灾害风险，基于平原区丰富的沉积记录开展洪水事件重建研究有助于科学认识洪水历史及规律，具有重要的意义和价值.通过系统梳理国内外在冲积平原洪水重建研究中的最新进展，重点回顾了近年来我国长江中下游平原和华北平原相关代表性成果，分析了平原区洪水沉积主要特征和识别标志，归纳了特大洪水事件的典型沉积序列和主要沉积环境.最后，结合国内外研究热点和前沿，展望了未来我国冲积平原在洪水重建研究的巨大潜力，建议以沉积相和地层关系为基础，进一步扩展洪水重建研究的时空范围，探索从定性到定量获取不同规模洪水的水文信息，进而开展流域尺度的综合分析，深入了解洪水的驱动机制和影响因素.
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| 关 键 词： | 冲积平原 古洪水 沉积特征 识别标志 全新世 |
| 收稿时间： | 2022-05-11 |
Progress and Prospects in Reconstruction of Flood Events in Chinese Alluvial Plains |
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| Abstract: | Alluvial plains are very important for urbanization process and human development, which are directly exposed to the risk of intense flooding in the long term. It can deepen the understanding of flood histories and patterns to conduct studies on floodplain deposits with rich information of paleoflood hydrology. By systematically reviewing the latest progress in the reconstruction of flood events in alluvial plains around the world, this paper pays high attention to the representative research in the Yangtze River Plain and the North China Plain over the last decade. The identification of paleoflood deposits at different time scales is reviewed, including sedimentary characteristics and environmental proxies. Combined with recent findings in the post-flooding investigation, sequences of multiple sedimentation layers in major flood events are summarized. In addition, depositional environments in the alluvial plain are generally divided into channel zones, channel margins and flood basins. Based on paleoflood research hotspots and frontiers, the future research firstly should focus on sedimentary features and stratigraphic relationships of flood deposits, then expand the spatial and temporal scope of flood records, explore quantitative paleoflood hydrology, and apply meta-analyses at the whole basin scale in order to gain a deeper understanding on the potential mechanism and factor. |
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