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
图6 西北地区中西部1963—2022年基于SPEI的干旱周期小波分析(a)及对应的小波系数方差(b)
Fig.6 Wavelet analysis of drought cycles based on SPEI (a) and corresponding wavelet coefficient variance (b) in the midwestern region of northwest China from 1963 to 2022