| 黄土高原地区沙尘暴形成的自然地理因素:Ⅰ影响因素分析 |
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| 引用本文： | 许炯心. 黄土高原地区沙尘暴形成的自然地理因素:Ⅰ影响因素分析[J]. 中国沙漠, 2005, 25(4): 547-551 |
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| 作者姓名： | 许炯心 |
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| 作者单位： | 中国科学院地理科学与资源研究所, 北京 100101 |
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| 基金项目： | 国家自然科学基金项目(40271019)，中国科学院地理科学与资源研究所知识创新工程领域前沿项目(CXIOGA0408)资助 |
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| 摘 要： | 以黄土高原地区227个县的资料为基础,研究了沙尘暴的发生频率与自然地理因子之间的关系。研究表明,沙尘暴的发生频率与自然地理因子密切相关,年降水量越大,地表物质可蚀性越小,大风日数越少,年均风速越小,年均沙尘暴日数越少。
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| 关 键 词： | 沙尘暴 沙尘暴成因 黄土高原 |
| 文章编号： | 1000-694X(2005)04-0547-05 |
| 收稿时间： | 2004-03-18 |
| 修稿时间： | 2004-03-18 |
Physico-Geographical Factors for Formation of Sand-Dust Storms in Loess Plateau Region: Factor Analysis |
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| XU Jiong-xin. Physico-Geographical Factors for Formation of Sand-Dust Storms in Loess Plateau Region: Factor Analysis[J]. ournal of Desert Research, 2005, 25(4): 547-551 |
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| Authors: | XU Jiong-xin |
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| Affiliation: | Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | Based on the data from 227 counties in the Loess Plateau region of China and using regression method, we studied the relation between the frequency of sand-dust storms and physico-geographical factors. The results show that the frequency of sand-dust storms is closely correlated with physico-geographical factors. It has been found that the lower the annual precipitation is, the more the annual days of strong wind are and the lower the erosional-resistance of the surface material, the higher the frequency of sand-dust storms is. |
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| Keywords: | sand-dust storm formative cause of sand-dust storms Loess Plateau |
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