Temporal Changes in Runoff in the Upper and Middle Reaches of Yellow River
Runoff is the important water resource and element of hydrologic cycle.The change of runoff directly affects the exploitation and utilization of water resources.Based on the data of monthly runoff from 1919 to 2013 of the three sites (Heleouzhen station,Wubu station and Sanmenxia station) in the middle reaches of the Yellow River,we used modern statistical analysis methods such as Spearman correlation,MannKendall rank test,sequential clustering method,to reveal the change of concentration and inhomogeneity about runoff.The results showed that the runoff of upstream and middle reaches of the Yellow River has reduced because of human activity.Meanwhile the climate impact on the runoff showed the significant stage.After runoff mutation,the concentration and inhomogeneity of runoff in the upper reaches of the Yellow River have reduced,and distribution of runoff tends to be more uniform,but inhomogeneity of runoff in the middle reaches of the Yellow River increases instead.
runoffvariation trendconcentrationinhomogeneitythe upper and middle reaches of the Yellow River
国家科技期刊平台
NSTL
万方数据
维普
