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中文摘要：
基于1949-1999年中国旱灾损失资料，运用启发式分割算法对旱灾损失序列进行变异点判定，并运用非一致频率分析方法对全国旱灾损失序列进行频率分析，得出基于不同时间段的3条近似平行的旱灾损失序列频率曲线，结果呈现出一种时序的规律性。结合1951-1998年中国年平均降水量资料，对结果合理性进行了分析。
英文摘要：
Based on the drought losses data from 1959 to 1999 of China, this paper applied the heuristic segmentation algorithm method to find a change point and used the non-uniform frequency analysis method to analyze the frequency of the national drought loss series, and obtained three approximate parallel curves of drought loss frequency sequences based on different periods which presented a kind of temporal regularity. In addi- tion, combined with the annual average rainfall data of China during 1951 - 1998, the rationality of the result was analyzed.
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