| 黄河上游地区地质灾害分布规律与区划 |
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| 关键词:upper Yellow River valley geological harzards distribution regularity regionalization |
| 基金项目:地质大调查项目“黄河上游新构造活动与地壳稳定性研究”和科技部项目“自然灾害数据库”(979250303) |
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| 摘要: |
| Distribution Regularity and Regionalization of Geological Hazards in the Upper Yellow River Valley |
| The region of the upper Yellow River valley is one of the areas in China where geological hazards frequently occur. The geo logical hazards mainly include earthquake,collapse,landslide,mud rock flows and soil erosion, land desertification,soil salinization, moisture sedimentation of clay and freezing melt. They not only threat the safety of people's life and all kinds of engineering but also destroy the land resources and ecological environment. They are adverse factors affecting the great exploitation and continuous deve lopment of western China. Geological hazards are different from area to area because they are controlled by such factors as geology, landform and climate. Three typical regions of geological hazards can be recognized: the northern region where there mainly exist soil desertification, soil saliniztion and earthquake; the middle region where earthquake collapse, landslide, mud rock flows and soil erosion are mainly seen; the southwestern and northwestern region where freezing melt is predominant.These regions can be further divided into 13 subregions. |
| ZHANG Chun-shan,ZHANG Ye-cheng,MA Yin-sheng,HU Jing-jiang,GAO Qing-zhao.2003.Distribution Regularity and Regionalization of Geological Hazards in the Upper Yellow River Valley[J].Acta Geoscientica Sinica,24(2):155-160. |
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