黄淮海平原干旱历时的概率特征研究

Probability Feature of Drought Duration in Huang－Huai－Hai（HHH） Plain

应用Ｄ．Ｍ．Ｈｅｒｓｈｆｌｃｌｄ的几何分布分析了用旬降水量表示干旱历时概率分布的可行性，分区研究了黄淮海平原干旱历时的概率特征；应用Ｓｅｎ的方法分析了黄淮海平原季节性干旱的年际历时的概率分布，为减灾抗灾提供理论依据。

The paper analysed the feasibility of using precipitation calculated in ten-day perieds to showdrought duration and gave the probability features of drought duration in 5 areas of HHH plain usingD. M. Hershfield’s geometrie distribution. It also dealt with probability distribution of seasonaldrought duration among years in the furmentioned regions applying Sen’s method.