基于SPEI的粤西近50 a干旱特征分析

李家良, 彭丽英, 刘祖任, 余绍荣, 梁家杰

Drought characteristics in western Guangdong over the past 50 years based on SPEI

LI Jialiang, PENG Liying, LIU Zuren, YU Shaorong, LIANG Jiajie

表1 基于SPEI干旱等级划分

Tab.1 The classification of drought grades based on SPEI

等级 SPEI值 无旱 -0.5<SPEI 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