Abstract:In this paper, the soil state was investigated by using the Vegetation Condition index (VCI). The procedure of modifing the Normalized Difference Vegetation Index (NDVI) into the VCI by using NOAA satellite AVHRR 1985-1991 data was presented. By the comparison between the VCI and the conventional data, the vegetation chang caused by large scale drought or flood may by indicated. The results show that the meteorological satellite data are more suitable for drought or flood monitoring in China.
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