| 中国七大流域水系与洪涝的分维及其关系研究 |
| |
| 引用本文： | 杨秀春,朱晓华. 中国七大流域水系与洪涝的分维及其关系研究[J]. 灾害学, 2002, 17(3): 9-13 |
| |
| 作者姓名： | 杨秀春 朱晓华 |
| |
| 作者单位： | 1. 北京师范大学资源科学研究所,北京,100875
2. 北京大学环境学院,北京,100871 |
| |
| 基金项目： | 教育部“教育振兴计划”青年教师奖励基金 ( 2 0 0 1DLXSBJBC12 )部分成果 |
| |
| 摘 要： | 本文在GIS技术的支持下，应用分形理论首先系统地计算了中国七大流域水系以及各流域洪涝的分维，其次对七大流域水系分维与各流域洪涝分维之间的可能关系进行了探讨。主要结论如下：（1）分维是表征洪涝发生特征的较好的参量，其蕴涵着洪涝发生次数，周期等丰富信息。（2）一般而言，在研究时段某流域洪涝发生的次数较多，则相应该流域洪涝的分维较大，反之亦然；（3）一般而言，当某一流域水系分维相对较小时，则相应该流域洪涝的分维相对较大，反之亦然。
|
| 关 键 词： | 分形 分维 水系 洪涝 中国 长江 珠江 海河 黄河 松花江 辽河 淮河 |
| 文章编号： | 1000-811X(2002)03-0009-05 |
Fractal Analysis Applied to the 7 Drainage Basins and the Flood in China |
| |
| YANG Xiu chun ,ZHU Xiao hua. Fractal Analysis Applied to the 7 Drainage Basins and the Flood in China[J]. Journal of Catastrophology, 2002, 17(3): 9-13 |
| |
| Authors: | YANG Xiu chun ZHU Xiao hua |
| |
| Affiliation: | YANG Xiu chun 1,ZHU Xiao hua 2 |
| |
| Abstract: | According to the fractal theory,the fractal dimensions of the 7 drainage basins and the flood are preliminarily calculated on the basis of GIS in this paper. The possible relation between the fractal dimensions of the 7 drainage basins and the flood is discussed. The following conclusions are obtained: 1. Fractal dimension is an useful parameter to depict the character of flood and it is of rich information indicating the frequency and period of flood; 2. In the studied time period, if the numbers of flood in a drainage basin are relatively great, the fractal dimension of flood in this drainage basin is comparatively great, vice versa; 3. When the fractal dimension of a drainage basin is relatively small, the fractal dimension of flood in this drainage basin is comparatively great, vice versa. |
| |
| Keywords: | fractal fractal dimension 7 drainage basin flood China |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
