基于逐日SPEI-30的黄土高原干旱演变特征及其驱动因素

刘旺旺, 刘丹, 张瑾彤, 李淑萍, 史利洁

Drought evolution characteristics and driving factors on the Loess Plateau based on daily SPEI-30

LIU Wangwang, LIU Dan, ZHANG Jintong, LI Shuping, SHI Lijie

图5 1961—2020年黄土高原不同季节平均每次干旱事件中不同等级干旱持续日数的年际变化

Fig.5 The interannual variations of average drought duration per drought event for different drought grades in different seasons over the Loess Plateau from 1961 to 2020