This paper analyses the characteristics of runoff and sediment changes since 1950 in the Upper and Middle Yellow River.
本文对1950年以来黄河上中游水沙变化特点进行了分析。
According to the observed runoff and sediment data of Lijin Hydrometric Station, the paper analyzes the characteristics of runoff and sediment variations of the Yellow River mouth since 1950.
根据利津水文站的实测水沙资料，分析了1950年以来黄河口水沙的变化特征。
Taking Nverzhai small watershed in Wuling Mountain area as study area, the characteristics of runoff and sediment yield events based on 77 typical observed rainfall events in 2004—2008 were studied.
以武陵山区女儿寨小流域为研究区，根据流域2004—2008年77场典型降雨径流观测资料，研究流域次降雨径流与产沙特征。
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