基于干旱和水位特征构建水库人工增雨需求指数

姜舒婕, 程莹, 方楠, 周毓荃, 单中华, 张磊

Construction of artificial precipitation demand level index of the reservoir based on drought and water level characteristics

JIANG Shujie, CHENG Ying, FANG Nan, ZHOU Yuquan, SHAN Zhonghua, ZHANG Lei

图7 1990—2019年不同等级DI（a）和DLI（b）频率季节分布

Fig.7 Seasonal distribution of frequency of DI （a） and DLI （b） with different grades from 1990 to 2019