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海河流域素有“十年九旱”的说法,是我国水资源短缺问题非常严重的地区.根据海河流域1951～2001年的逐月降雨资料和历史的灾情文献记载,采用游程理论识别拟定了适合海河流域干旱状况的干旱指标,并用该指标分析了海河流域典型干旱年份的旱情区域分布特征,给出了各等级干旱的区间分布.结果表明干旱现象具有明显的地区差异,不同地区在干旱规划管理中应采取相应不同的措施.
Haihe River Basin is known as “ten years of nine dry” argument is a very serious problem of water shortage in our country.According to monthly precipitation data from 1951 to 2001 in the Haihe River Basin and the history of the disaster literature, the use of run-length theory identified a suitable The drought index of the Haihe River Basin was used to analyze the distribution characteristics of the drought in the typical years of drought in the Haihe River Basin and the distribution of the drought in each level.The results showed that there were obvious regional differences in the drought, In the corresponding different measures should be taken.