“一带一路”国家和地区百年尺度干旱化特征分析

王飞, 丁建丽, 魏阳

Analysis of Drought Characteristics over Countries and Regions of “The Belt and Road Initiatives” in Recent One Hundred Years

WANG Fei,DING Jianli,WEI Yang

图2 1901-2013年SPEI指数均值变化

Fig. 2 The variation of average values of SPEI index from 1901 to 2013