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首页> 外文期刊>Catena: An Interdisciplinary Journal of Soil Science Hydrology-Geomorphology Focusing on Geoecology and Landscape Evolution >The Hongqiaocun Site: The earliest evidence of ancient flood sedimentation of the water conservancy facilities in the Chengdu Plain, China
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The Hongqiaocun Site: The earliest evidence of ancient flood sedimentation of the water conservancy facilities in the Chengdu Plain, China

机译：虹桥网址：中国成都平原水利设施的最早证据证明古洪水沉积

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摘要

The earliest water conservancy facilities in the Chengdu Plain were found at the Hongqiaocun Site of about 4.0 ka before present, nearly 2,000 years earlier than the world-famous Dujiangyan Irrigation Project. In order to understand the background of the construction of the water conservancy project, we sampled and analyzed the ancient river profile TS20W13 near the water conservancy facilities. Sedimentology demonstrated that the 4th to 6th layers of the TS20W13 profile were the strongest stage of hydrodynamic force in the river. The Zr/Rb and Ba/Nb values indicated that the 4th to 7th layers might have been those layers of a time of frequent flooding in this ancient river. The results of zircon psephicity analysis also showed that the psephicity of the zircon at the 4th to 6th layers were the best, indicating that along this stage of the river, the average transporting force was the strongest. According to the OSL dating results and the above analysis, at around 4.0 ka BP, the Hongqiaocun Site was in the midst of a flood-prone period, which was synchronous with the ancient flood records of the Yangtze River and Yellow River Basin. The increase in flooding during this period might be related to the aggravation of climatic fluctuation by about 4.0 ka BP. In the context of the above environmental background, the ancient people at the Hongqiaocun Site built water conservancy facilities to withstand floods.
机译：成都平原的最早的水利设施被发现在凌晨4s.0 ka之前，比在目前约4.0 ka，比世界着名的Dujianyan灌溉项目早近2000年。为了了解水利项目建设的背景，我们对水利设施附近的古河轮廓TS20W13进行了取样和分析。沉积物证明了TS20W13型材的第4到第6层是河流中流体动力力的最强阶段。 Zr / Rb和Ba / Nb值表明，第4到第7层可能是这条古河在这条古老的河流中频繁的洪水时间的那些层。锆石证券分析的结果还表明，锆石的假期在第4到第6层中是最好的，表明沿着河流的这个阶段，平均运输力是最强的。根据OSL约会结果和上述分析，在凌晨4点0左右，虹桥村位于普通型普通期，与长江和黄河流域的古代洪水记录同步。在此期间的洪水增加可能与气候波动的加剧约为4.0kA BP有关。在上述环境背景的背景下，古代人民在虹桥网站建造了水利设施，以承受洪水。

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