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应用ＮＯＡＡ气象卫星ＡＶＨＲＲ资料探讨了监测贵州干旱的３种方法，即植被指数法、第４通道遥感下垫面亮温法和植被供水指数法。结果表明，植被供水指数与地面干旱指数相关性最好，其空间分布与地面旱情分布基本一致。由此，用植被供水指数确定了各地州的受灾面积，并建立了植被供水指数估计地面干旱指数的遥感方程
Three methods for monitoring drought in Guizhou were discussed using the NOAA meteorological satellite AVHRR data, namely the vegetation index method, the fourth channel remote sensing surface brightness temperature method and the vegetation water supply index method. The results showed that the correlation between vegetation water supply index and ground drought index was the best, and its spatial distribution was basically the same as the ground drought distribution. Thus, the affected area of each state was determined by the vegetation water supply index, and a remote sensing equation for estimating the ground drought index of vegetation water supply index was established