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利用气象卫星的遥感数据计算得到描述地面植被生长好坏的植被指数，并用其数值对宁夏地区１９９４年发生的干旱进行了宏观分析。
The vegetation index, which describes the growth of ground vegetation, is calculated by remote sensing data of meteorological satellite. The macroscopical analysis of the drought occurred in 1994 in Ningxia is carried out by using the numerical data.