| 华北地区不同下垫面对沙尘暴的影响 |
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| 引用本文： | 宋阳,全占军,刘连友,YAN Ping,CAO Tong.华北地区不同下垫面对沙尘暴的影响[J].地理学报(英文版),2005,15(4):431-438. |
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| 作者姓名： | 宋阳 全占军 刘连友 YAN Ping CAO Tong |
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| 作者单位： | College ofResources Science and Technology;Key Laboratory ofEnvironm entalChange and NaturalDisaster，theM inistry ofEducation ofChina，Beijing Norm alUniversity，Beijing 100875，China |
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| 基金项目： | 国家自然科学基金;教育部科学技术研究项目 |
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| 摘 要： | 1 Introduction Sand-dust storm is a large-scale transporting process of fine particles under the intense m ovem entofcurrent.These fine particles are induced by wind erosion on land surface (Dong, 2000).Sand-dust storm is not only a crucial environmental …
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| 关 键 词： | 华北地区 下垫面 沙尘暴 气候影响 |
| 收稿时间： | 2005-03-11 |
| 修稿时间： | 5/9/2005 12:00:00 AM |
The influence of different underlying surface on sand-dust storm in northern China |
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| Song Yang Ph.D.,Quan Zhanjun,Liu Lianyou,Yan Ping,Cao Tong.The influence of different underlying surface on sand-dust storm in northern China[J].Journal of Geographical Sciences,2005,15(4):431-438. |
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| Authors: | Song Yang PhD Quan Zhanjun Liu Lianyou Yan Ping Cao Tong |
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| Institution: | Beijing Normal University;Key Laboratory of Environmental Change and Natural Disaster, the Ministry of Education of China, Beijing Normal University, Beijing 100875,China |
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| Abstract: | In thispaper,a quantitative research on the relationship between differentunderlying surface and sand-duststorm has been made by using 40 years meteorologicaldata offive differenttypes of underlying surface in northern China,which include farmland,grassland,sandland,gobiand saltcrust. These metrologicaldata comprise sand-duststorm days and strong wind days.By analyzing,we can find that there are certain correlations between the days of sand-dust storm and strong wind for differentunderlying surface,which has greatinfluence on sand-duststorm.Butthere are pronounced differences in differenttypes ofunderlying surface.The sand-duststorm days ofgrassland,gobiand saltcrust,with smallerinterannualvariation are obviously less than strong wind days.On the other hand,the sand-duststorm days offarmland and sandland increase evidently,even in many years,are much more than strong wind days.The differencesare mainly induced by the influencing mechanism of different underlying surface on sand-dust storm. Grassland, gobi and salt crust with stable underlying surface are not prone to sand-dust storm under strong wind condition. W hereas, the underlying surface offarmland and sandland isunstable,thatiseasy to induce sand-duststorm under strong wind condition. |
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| Keywords: | sand-dust storm underlying surface strong wind northern China |
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