| 18世纪中叶以来不同时段的中国水灾格局 |
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| 引用本文： | 王静爱,王瑛,黄晓霞,方伟华,周俊华,王理.18世纪中叶以来不同时段的中国水灾格局[J].自然灾害学报,2001,10(1):1-7. |
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| 作者姓名： | 王静爱 王瑛 黄晓霞 方伟华 周俊华 王理 |
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| 作者单位： | 1. 北京师范大学资源与环境科学系,
2. 北京师范大学 |
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| 基金项目： | 国家自然科学基金重大项目(39899374),高等学校骨干教师资助计划项目. |
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| 摘 要： | 以县域为基本统计单元。以年均水灾次为基本指标,以数字地图技术支持下,编制了一套信息来源不同、时段相对连续的中国水灾格局图。分析表明：中国水灾格局以胡焕庸线为界,呈现东西分异;水灾高值区呈现团块分布,与地貌格局关系密切;近百年来全国水灾中心呈现由黄淮海平原向东北、西部和南方转移的趋势;近50年来,华北成为水灾低值区,水灾由东向西形成4个梯度区。这些研究为揭示水灾格局对水灾过程影响机制的研究提供了科学依据。
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| 关 键 词： | 中国 水灾格局 年均水灾次 数字地图 影响机制 数据库 动态变化 |
| 文章编号： | 1004-4574(2001)01-0001-07 |
| 修稿时间： | 2000年12月25 |
Chinese flood patterns in
different periods since the middle of the 18th century |
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| WANG Jing-ai,WANG Ying,HUANG Xiao-xia,FANG Wei-hua,ZHOU Jun-hua,WANG Li.Chinese flood patterns in
different periods since the middle of the 18th century[J].Journal of Natural Disasters,2001,10(1):1-7. |
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| Authors: | WANG Jing-ai WANG Ying HUANG Xiao-xia FANG Wei-hua ZHOU Jun-hua WANG Li |
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| Abstract: | Based on the average flood times per year(AFT) with the statistic unit "county", this paper presented the Chinese flood disaster spatial patterns from the digital flood disaster maps of China, which come from different information sources and divided into different periods. The paper gets also some conclusion as follows: the flood disaster spatial pattern of China is separated into east and west parts by the HU Huan-yongs Line, the areas with high AFT value show mosaic distribution, which is controlled by the landform of China, the high AFT areas in China show the trend of moving from Huang-Huai Plain to Northeast, West and South China during the last 100 years, in the last 50 years, North China has become the lower AFT areas, and the flood disaster spatial pattern shows four belts from the east to west parts of China. |
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| Keywords: | china flood disaster spatial pattern average flood times per year(AFT) |
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