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基于黄河河道径流量与河流基本功能之间关系的认识,提出了黄河功能性断流的概念.探讨了能够反映黄河功能性断流严重状况的基本因子.根据1950～1999年间的实测数据结合聚类分析,得出了关于黄河功能性断流严重程度的分级参考标准.分别按照作者和黄河水利委员会提出的最小生态需水量方案计算了黄河功能断流的级别,并对预测结果进行了比较.在此基础上,揭示了黄河功能性断流与零流量断流之间的关系.
Based on the understanding of the relationship between the runoff of the Yellow River and the basic function of the river, the concept of the functional break of the Yellow River is put forward, and the basic factors that can reflect the serious condition of the Yellow River’s functioning current break are discussed.According to the measured data from 1950 to 1999, We got the grading reference standard about the severity of functional flow discontinuity in the Yellow River.According to the authors and the minimum ecological water demand plan proposed by the Yellow River Conservancy Commission, the grade of functional cutoff of the Yellow River was calculated and the prediction results were compared. On this basis, it reveals the relationship between the functional flow-off of the Yellow River and the flow-off of zero-flow.