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中文摘要：
本文分析了河网径流节点的基本特征及分类，论述了基于ArcGIS水文分析模块提取河网径流的方法，并在此基础上提出了基于几何网络提取河网径流节点的方法。该方法提取得到的径流节点，除能表达其位置信息外，属性表中还记录了径流节点类型、汇流等级情况信息。实例表明该方法原理简单，易于操作实现，提取效果与实际地貌情况基本相符，可以广泛应用于分布式水文模型等研究中。
英文摘要：
Abstract： The character and classification of stream runoff nodes was analyzed in the paper, and the method to extract stream network based on AreGIS was discussed. Then, a method to extract stream runoff nodes based on geometric network was brought forward. It was proved that this method was simple in principle, easy in operation, and the result was in accordance with the relief reality. These methods could be widely used in the distributed hydrology model and other researches.
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