Analysis on the Evolution Law and Attribution of Runoff in the Simaoyou River from 1984 to 2018
In order to reveal the runoff evolution law of the Simaoyou River and its influencing factors,based on the measured runoff data of the Simaoyou Sluice Hydrological Station from 1984 to 2018,Mann Kendall test,Pettitt test and Morlet wavelet analysis are used to analyze the interannual variation law of the Simaoyou River,and the annual distribution law of the runoff of the Simaoyou River is analyzed by using three indicators:non-uniformity coefficient,concentration ratio and concentration period,Quantitative analysis of the causes of runoff evolution in the Simaoyou River using double cumulative curves.The results show that the runoff of the Simaoyou River shows a significant upward trend,and a significant upward mutation occurred in 2004.The main runoff period is 28,18,13,and 9 years;The annual distribution of the runoff of the Simaoyou River is relatively uniform;The contribution rates of precipitation factors and human activity factors to the changes in runoff of the Simaoyou River are 3.3％and 96.7％,respectively.The changes in impermeable water surface caused by human activities are important reasons for the changes in runoff of the Simaoyou River.
runoff changeSimaoyou Riverattribution analysisannual distribution
万方数据
维普
