地理学报

地理学报 ›› 2001, Vol. 56 ›› Issue (6): 691-699.doi: 10.11821/xb200106008

• 论文 • 上一篇    下一篇

黄河断流严重程度分级与判别方法

钱征寒1,2, 倪晋仁1,2, 薛安1,2   

  1. 1. 北京大学环境科学中心,北京100871;
    2. 北京大学水沙科学教育部重点实验室,北京100871
  • 收稿日期:2001-06-28 修回日期:2001-10-15 出版日期:2001-11-15 发布日期:2001-11-25
  • 基金资助:
    国家重点基础研究发展规划项目(G1999043603)

Classification and Identification of Severity Degree of the No-flow Events in the Yellow River

QIAN Zhenghan1,2, NI Jinren1,2, 1,2   

  1. 1. Center for Environmental Sciences, Peking University. Beijing 100871, China;
    2. The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China
  • Received:2001-06-28 Revised:2001-10-15 Online:2001-11-15 Published:2001-11-25
  • Supported by:
    The Major State Basic Research Program of People's Republic of China, No. G1999043603

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被引次数

59 | 12

摘要： 根据1972年以来有关黄河断流的观测数据，选择与断流特点有关的特征因子组合，给出了能够反映断流状况的综合指标。并据此结合聚类分析得出了关于黄河断流严重程度的分类结果，指出了相应的分级原则，基于断流级别与河流径流量及其年内径流变差系数之间可能存在的密切关系。建立了反映三者关系的人工神经网络模型。用以判别已知河流来水特性条件下的黄河下游断流严重程度。

关键词: 黄河断流, 严重程度, 分级, 判别, 来水特性, 神经网络模型

Abstract: Based on a review of the characteristic factors used for no-flow behavior analysis in previous studies, this paper proposed an additional comprehensive index which could remedy some deficiencies of other factors and thereby constitute a basis for classification of the severity degree of the Yellow River no-flow events. According to the cluster analysis of the measured data since 1972 when the no-flow phenomena occurred in the Yellow River first time, five severity levels could be classified for no-flow events in the Yellow River. Furthermore, the severity level is closely related to the incoming runoff as well as its fluctuation within a year expressed in terms of a deviation coefficient. A BP-typed ANN model was developed for identifying the complex response of the severity level to flow characteristics such as the incoming runoff and its fluctuation. The proposed method is of significance to the quantitative assessment of the severity level of the no-flow events in the Yellow River, and its applicability was proved through the comparison between the predicted and the measured results.

Key words: no-flow event, severity level, classification, identification, ANN

中图分类号: 

  • P333