河西走廊及周边区域干旱时空分异特征研究

刘小瑛, 杨秀梅, 张君霞, 贵强, 郑琼, 张军鹏

Spatial-temporal differentiation characteristics of drought in the Hexi Corridor and surrounding regions

LIU Xiaoying, YANG Xiumei, ZHANG Junxia, GUI Qiang, ZHENG Qiong, ZHANG Junpeng

图9 由SPEI-12表征的研究区不同时段、不同等级干旱频率（单位：％）空间分布

Fig.9 Spatial distribution of frequency （Unit： ％） of drought with different grades in different periods in the study area characterized by SPEI-12