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7 1961—2020年黄土高原不同季节干旱持续日数变化趋势空间分布(单位:d·a-1
Fig.7 Spatial distribution of the trends in drought duration for different seasons over the Loess Plateau from 1961 to 2020 (Unit:d·a-1