基于SPEI的甘南高原气象干旱变化特征

赵惠珍, 何涛, 郭瑞霞, 王成福, 张艳荣, 李琪

Meteorological drought variation characteristics in the Gannan Plateau based on standardized precipitation evapotranspiration index

ZHAO Huizhen, HE Tao, GUO Ruixia, WANG Chengfu, ZHANG Yanrong, LI Qi

表1 基于SPEI的干旱等级划分标准

Tab.1 Classification standard of drought grades based on SPEI

等级 类型 SPEI 1 无旱 SPEI>-0.5 2 轻旱 -1.0<SPEI≤-0.5 3 中旱 -1.5<SPEI≤-1.0 4 重旱 -2.0<SPEI≤-1.5 5 特旱 SPEI≤-2.0