基于Mann-Kendall的沈阳水文站年径流量变化分析

Analysis of the annual runoff change of Shenyang hydrological station based on Mann-Kendall method

本文以沈阳(三)水文站1984-2014年的实测年径流资料为基础,采用滑动平均法、Mann-Kendall检验法,从径流的趋势特征、突变特征等方面对沈阳水文站的径流特征进行了分析研究。研究表明,年径流丰枯交替出现,经历了一个"减-增-减-增"的变化过程。

Based on the measured annual runoff data of Shenyang(III)hydrological station during 1984-2014,the paper analyzes and researches the runoff characteristics of Shenyang hydrological station from the runoff trend and abrupt change characteristics by using the moving average method and the Mann-Kendall test.The results showed that the annual runoff occurs alternatively in form of wet or dry period and has undergone the process of"decreasing-increasing-decreasing-increasing".