[1]Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;
[2]Arid Land Research Center, Tottori University, 1390 Hamasaka Tottori, 680-0001 Japan;
降水事件; 降雨特征; 沙坡头; 北部地区; 中国; 基础; 平均持续时间; 半干旱气候;