中国1840—1996年洪水灾害若干特征分析

在中国１８４０￣１９９６年洪水灾害相关资料的基础上，运用一般统计方法和分形理论分析了１８４０￣１９９６年洪水灾害的若干特征，包括１８４０￣１９９２年中国七大江河各等级水灾发生特征、中国１８４０￣１９８９年七大江河每十年洪水灾害发生频率的演进特征、中国１９５０￣１９９６年水灾受灾面积统计特征、中国１８４０￣１９４９年水灾受灾县数时间序列与１９５０￣１９９６年水灾受灾面积时间序列的分形特征等。

THE RESEARCH ON CHARACTERISTICS OF FLOOD FROM 1840 TO 1996 IN CHINA

Based on correlative data of flood fr om 1840 to 1996 in China, some statistical and fractal characteristics of flo od are discussed, inclu ding the characteristic of different scales of flood for seven rivers from 1840 to 1992, the characteristic of frequency evolution for every ten years of the seven rivers from 1840 to 1989, the statistical characteristic of covered areas of flood from 1950 to 1996, the fractal characteristic for time series of covered cities from 1840 to 1949 and the covered areas from 1950 to 1996.