基于集对分析的年径流丰枯分类新方法

A New Approach to Annual Runoff Classification Based on Set Pair Analysis

年径流丰枯不仅与年径流大小有关,而且与年径流的时间分配有关。传统年径流丰枯分类仅考虑了年径流的大小,忽略了年径流的时程分配对丰枯分类的影响。为此,提出了年径流丰枯分类新方法———集对分析法。集对分析法考虑了径流的大小及其年内时程分配,即将年内12个月的月径流量分别分类并构造分类集合,由分类集合与分类标准集合构造集对,用联系度描述集对的关系进而进行径流丰枯分类。将集对分析法用于金沙江干流某水文站年径流丰枯分类,研究表明集对分析法概念清楚,计算简单,分类结果可信。

High and low of annual runoff is related to amount of annual runoff and its distribution in a year.The traditional annual runoff classification only takes into account of amount of annual runoff,and ignores the distribution of runoff in a year.In order to overcome the drawbacks of the traditional annual runoff classification methods,a new approach to runoff classification: Set pair analysis method(SPA),has been proposed in this paper.Both amount of runoff and its distribution in a year have been taken into ...