| Assessing Danger Degree of Soil Erosion in Rikaze Prefecture, Tibet |
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| 作者姓名： | CHEN Xuehua ZHOU Jianzhong ZHOU Hongyi |
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| 作者单位： | [1]School of Hydropower and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China [2]Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China |
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| 基金项目： | Supported by the National Basic Research Program of China （973 Program）（2003CB415201） and the Knowledge Innovation Program of Chinese Academy of Sciences （INF105-SDB-27） |
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| 摘 要： | Ten indicators were selected in the present paper concerns current status of soil erosion and its driving forces. Synthesized evaluation model on danger degree of soil erosion （DDSE） was built and estimation on DDSE in Rikaze was carried out by analytical hierarchy process （AHP）. This evaluation model selected indicators scientifically and reasonably, which are easy to be caught, and played well in application. Results showed that a light erosion danger degree exists in Nanmulin, Xietongmen and Angren; Dingri, Sajia, Saga, Zhongba; Nielamu, Gangba, Kangma and Rikaze County share a moderate danger degree, while other counties own severe erosion, especially Dingjie and Lazi County. Ecological environment in Rikaze is frangible. Therefore, eco-restoration needed in this and corresponding c region to guarantee are urgently a regional eco-environment healthy.
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| 关 键 词： | 土壤侵蚀 日喀则地区 西藏 危验等级 层次分析法 |
| 文章编号： | 1007-1202（2007）04-0705-05 |
| 收稿时间： | 22 September 2006 |
| 修稿时间： | 2006-09-22 |
Assessing danger degree of soil erosion in Rikaze prefecture,Tibet |
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| CHEN Xuehua ZHOU Jianzhong ZHOU Hongyi.Assessing Danger Degree of Soil Erosion in Rikaze Prefecture, Tibet[J].Wuhan University Journal of Natural Sciences,2007,12(4):705-709. |
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| Authors: | Chen Xuehua Zhou Jianzhong Zhou Hongyi |
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| Institution: | (1) School of Hydropower and Information Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China;(2) Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, Sichuan, China |
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| Abstract: | Ten indicators were selected in the present paper con-cerns current status of soil erosion and its driving forces. Synthe-sized evaluation model on danger degree of soil erosion(DDSE) was built and estimation on DDSE in Rikaze was carried out by analytical hierarchy process(AHP) . This evaluation model se-lected indicators scientifically and reasonably,which are easy to be caught,and played well in application. Results showed that a light erosion danger degree exists in Nanmulin,Xietongmen and Angren;Dingri,Sajia,Saga,Zhongba;Nielamu,Gangba,Kangma and Rikaze County share a moderate danger degree,while other counties own severe erosion,especially Dingjie and Lazi County. Ecological environment in Rikaze is frangible. Therefore,eco-restoration and corresponding countermeasures are urgently needed in this region to guarantee a regional eco-environment healthy. |
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| Keywords: | soil erosion danger degree indicator system analytical hierarchy process Rikaze |
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