Fig. 1. The site and DEM of Shanxi province

Fig. 2. Average yearly NDVI of Shanxi province from 2001 to 2014
(a): MODIS NDVI; (b): AVHRR NDVI

Fig. 3. Average monthly SPEI (a), DSI_MODIS (b) and DSI_AVHRR (c) in Shanxi province from 2001 to 2014

Fig. 4. Correlation coefficients among DSI_MODIS, DSI_AVHRR and SPEI
(a): SPEI and DSI_MODIS; (b): SPEI and DSI_AVHRR; (c): DSI_MODIS and DSI_AVHRR

Fig. 5. Time frequency of drought under D1~D4 gradesin Shanxi Province from 2001 to 2014
(a): SPEI; (b): DSI_MODIS; (c): DSI_MM

Fig. 6. Spatial rate of SPEI, DSI_MODIS and DSI_MM under D1~D4 (a, b, c, d) grades

Fig. 7. Drought information of four seasons in Shanxi province from 2001 to 2014 year

Fig. 8. Typical drought monitoring in summer of 2001 (a) and 2002 (b) based on DSI_MM