1961—2023年黑龙江省多尺度干旱时空特征

刘玉莲, 李秀芬, 康恒元, 孙爽, 袁芳, 周贺玲, 沈月钊

Multi-scale drought spatiotemporal characteristics in Heilongjiang Province from 1961 to 2023

LIU Yulian, LI Xiufen, KANG Hengyuan, SUN Shuang, YUAN Fang, ZHOU Heling, SHEN Yuezhao

表1 基于SPEI的干旱等级划分标准

Tab.1 Classification standard of drought grade based on SPEI

干旱等级 SPEI 无旱 SPEI>-0.5 轻旱 -1.0<SPEI≤-0.5 中旱 -1.5<SPEI≤-1.0 重旱 -2.0<SPEI≤-1.5 特旱 SPEI≤-2.0