| 我国北方风沙灾害加剧的成因及其发展趋势 |
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| 引用本文： | 高尚玉,史培军,哈斯,潘耀忠. 我国北方风沙灾害加剧的成因及其发展趋势[J]. 自然灾害学报, 2000, 9(3): 31-37 |
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| 作者姓名： | 高尚玉 史培军 哈斯 潘耀忠 |
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| 作者单位： | 北京师范大学环境演变与自然灾害教育部重点实验室,北京师范大学资源科学研究所,北京100875 |
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| 基金项目： | 国家基础研究重点发展规划项目（G1999043404）；教育部重点科研项目；国家重点基础研究（培植）项目 |
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| 摘 要： | 综合分析了我国风沙灾害加剧的原因，并从我国北方沙漠、沙地形成演变的地理格局，探讨了我国沙化过程的中、长期发展趋势。本文认为，我国近年风沙灾害的加剧是在气候趋于干燥化背景下，人类大面积发展沙区生产的结果，但是，目前的流沙分布范围仍不及末次冰期极盛时期。未来我国风沙灾害的发展主要取决于气候增温背景下降水的时空分布、沙区的风化变化与地表土地的利用格局。
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| 关 键 词： | 风沙灾害 沙地演变 中国 北方 |
| 文章编号： | 1004-4574(2000)03-0031-07 |
| 修稿时间： | 2000-05-18 |
Causes of rapid expansion of blown-sand disaster and long-term trend of desertification in Northern China |
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| GAO Shang-yu,SHI Pei-jun,HA Si,PAN Yao-zhong. Causes of rapid expansion of blown-sand disaster and long-term trend of desertification in Northern China[J]. Journal of Natural Disasters, 2000, 9(3): 31-37 |
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| Authors: | GAO Shang-yu SHI Pei-jun HA Si PAN Yao-zhong |
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| Abstract: | Rapid expansion of blown-sand disaster in china has been analyzed synthetically in this paper. According to geographical pattern of the desert and sandy land evolution, middle and long-term trend of desertification in Northern China has also been discussed. It can be thought that the rapid expansion of blown-sand disaster is caused by the human activities in the sandy regions under the background of increasing drought. However, the present distribution of drift sands does not exceed the extension of that in the period of LGM. The occurrence trend of blown-sand disaster will depend on the changes of precipitation, wind and pattern of landuse under the background of global warming in the future. |
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| Keywords: | blown-sand disaster sandy land evolution China |
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