疏勒河流域降水变化特征研究

he annual and monthly precipitation data from five hydrological stations in the Shule River Basinfrom 1956 to 2020, were analyzed using linear tendency, sliding average, cumulative anomaly, Mann- Kendallmutation test, wavelet analysis, and other methods. The interannual variation process for precipitation in theShule River Basin and its variation characteristics, such as mutability, trend, periodicity, persistence,heterogeneity, and concentration, were evaluated. The results show that the annual precipitation at each station inthe Shule River Basin showed different increasing trends, and the precipitation at each station showed differentmutation characteristics. Over the previous 60 years, precipitation in the entire basin presents a relatively unevendistribution on the time scale, and the precipitation in the upstream area is more than that in the downstream.Specifically, the annual precipitation at Changmabao and Dangchengwan stations showed obvious increasingtrends, while the increasing trend at Panjiazhuang station and Shuangtabao and Danghe reservoir stations was notobvious. The analysis indicates that precipitation in the basin will continue to show an increasing trend in thecoming period.