依据汇流累积量分析的河网分级算法A kind of stream order algorithm based on flow accumulation analysis
黄萌萌,徐柱,梁启学,李灿,刘明
摘要(Abstract)：
针对目前河网分级算法不能有效确定主次关系的问题,该文在数字高程模型(DEM)分析的基础上,提出一种基于汇流累积量的河网分级算法。首先,对矢量化的河网添加汇流累积量属性,并在其基础上构建树状结构的河网拓扑关系;然后从流域的出水口开始,逆流而上利用河网主干提取算法对河网逐层遍历提取主干;最后根据每一层级的主干提取结果对河网分级。实验结果表明,本文提出的河网分级算法能够较好地确定河网的主干,反映河网中河段的层次关系,且与分级后的山脊线网络衔接良好。
关键词(KeyWords)： DEM分析;汇流累积量;河网分级;河网主干提取
基金项目(Foundation):
作者(Author): 黄萌萌,徐柱,梁启学,李灿,刘明
DOI: 10.16251/j.cnki.1009-2307.2018.11.015
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