This paper analyses the hotspot in international water resources research, summaries the conversion and progress in water resources management of large river basins in China.
从分析国内外大江大河水资源研究的热点入手，介绍了国内江河流域水资源管理思路的转变和实践；
North Henan plain is subject to two large basins of Yellow River and Haihe River, where contains relative abundant groundwater among loose rock groups in plain area.
豫北平原隶属黄河、海河两大流域，在平原区松散岩类中蕴藏着较丰富的地下水。
The lag time of the flood peak behind the peak of heavy area rainfall is shorter in small river basins than that in large basins.
面雨量峰值出现时间与洪峰的出现时间之间存在着一定的滞后关系，一般是小流域滞后的时间短，而大流域滞后的时间长。
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