The Yellow River's flooding into the Huaibei Plain has profoundly changed the natural environment of the latter,made great influence on local social production and national economy,and even affected the process of Chinese history.It has become an important issue of concern to government and scientists.The Yellow River has flooded numerous times into the Huai River throughout the Quaternary.The flooding of the Yellow River into the Huai River drainage basin has occurred during the last deglaciation (13.2 ka B.P.) in the late Pleistocene.The Yellow River has also frequently shifted course in its lower reaches in the Holocene as a result of natural floods and human activity.More than 1000 floods have occurred in the past 4000 years.According to The Chronicle of Bamboo Book(《竹书纪年》),the first time that the Yellow River flooded into the Huai River drainage basin was in 361 BC as a result of human activity(canal digging),but the first historical record of a natural flooding was in 168 BC.The last time the Yellow River flooded into the Huai River drainage area was in 1938 A.D.as a result of military sabotage of a dam.Research on the flooding of the Yellow River into the Huai River is of great importance for the understanding of the formation and evolution of the Huaibei Plain.It is of great theoretical significance to understand the paleoclimate response to the extreme paleo-floods in the lower Yellow River,and provides basic hydrological data for modern water conservancy construction,as well as flood and drought mitigation in the Huanghuai area.This paper summarizes the environmental impacts of the Yellow River flooding into the Huai River,as well as the determination method and mechanism of the flooding of Yellow River into the Huaibei Plain.Environmental impacts include impacts on the Huai River system,the surface process of Huaibei Plain,the source-sink process in Huaihe basin,ocean(in the Eastern China)provenance and the significance of the formation of the Yellow River.Previous research on the impact and significance of the constraint age of the events of the flooding of the Yellow River into the Huaibei Plain focuses on the process of the surface,but little has done on the influence and significance of the sedimentation process during the geological period.In addition,a comprehensive summary is made on determination methods,dating,climatic background and mechanism of the flooding of Yellow River into the Huaibei Plain.There exist some ambiguities or uncertainties in the methods such as grain size analysis and lithofacies observation for recognizing the Yellow River floods sediment.The time scale of the Yellow River flooding into Huai River is concentrated on the historical period,which is short and does not exceed the Holocene.There are different views on the natural causes (climatic background and mechanism)of the Yellow River flooding into the Huaibei Plain.One point of view is that the events occur mostly in the period of warm and wet climate,while the other holds that the events often occur during the climate transition period.Finally,we point out the problems in the research of the Yellow River flooding into the Huaibei Plain and put forward the solution to these problems.The geological significance of the Yellow River flooding into the Huaibei Plain needs to be further explored.The complete sequence in Quaternary of the Yellow River flooding into Huai River needs to be reconstructed.Multiple methods(provenance analysis etc.)should be used to solve the ambiguities and uncertainties.%黄河改道进入淮北平原(简称“黄河入淮”)深刻改变了淮北平原地区自然环境状况,这一系列环境变化对当地社会生产和国民经济带来巨大影响,甚至影响了中国历史发展的进程,是政府部门和科学家们共同关注的重大问题.黄河入淮事件的研究对于理解淮北平原的形成、演化具有重要意义,对于认识黄河下游极端古洪水事件对古气候的响应规律具有重要的理论意义,对于黄淮流域现代水利工程建设、洪旱灾防御等能够提供亟需的水文数据.文章主要从黄河入淮对环境的影响以及黄河入淮事件的确定方法及其原因机制方面进行了综述.对环境的影响主要从对淮河水系、对淮北平原地表过程、对淮河盆地源-汇过程、对中国东部海洋物源变化的影响以及对黄河贯通上限时间的约束意义进行了说明;另外,对于黄河入淮事件的确定方法、年代学及其发生的气候背景和原因机制进行了全面总结;最后指出了黄河入淮事件目前有待进一步研究的问题并进行了展望.
展开▼
