Abstract:

The aim was to establish drought monitoring model and discuss the applicability of the model. Based on the fall drought features in the south district of Yangtze River in AnHui Province, and the NOAA/AVHRR data, the index method was used. The polar orbit meteorological satellite data and surface soil moisture data were used for drought monitoring. The result showed that the model between VSWI and 20 cm soil moisture was significant at 0.05 level, models were y20cm=1.6708x+48.889 and y20cm=4.18x+18.848 respectively, but the model between VSWI and 10 cm soil moisture was not significant at 0.05 level, through testing and analysis, the too monitoring models could be used in practice.