1997—2021年四川省干旱时空变化特征分析

蔡怡亨, 李帅, 张强, 邓彪, 罗玉, 孙蕊

Spatio-temporal variation of drought in Sichuan Province from 1997 to 2021

CAI Yiheng, LI Shuai, ZHANG Qiang, DENG Biao, LUO Yu, SUN Rui

图10 1997—2021年四川省6个干旱气候区年累积MCIm的小波系数实部 （粗实线表示通过α=0.050显著性水平临界值，细实线表示边缘效应影响较大的区域）

Fig.10 The real part of the wavelet coefficients of annual accumulated MCIm in six drought climatic areas in Sichuan Province from 1997 to 2021 （The thick black contour designates critical value at the 0.050 significance level， and the cone of influence （COI） where edge effects might distort the picture is shown as a light contour）