1963—2022年西北地区中西部干旱演变特征及植被响应研究

苏天鑫, 孟宪红, 杨显玉, 安颖颖, 赵采玲

Drought evolution characteristics and vegetation response in the midwestern region of northwest China from 1963 to 2022

SU Tianxin, MENG Xianhong, YANG Xianyu, AN Yingying, ZHAO Cailing

表1 SPEI干旱指数等级划分

Tab.1 Drought classification criteria based on SPEI

等级 干旱类型 SPEI值 1 无旱 -0.5<SPEI 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