Assessing Danger Degree of Soil Erosion in Rikaze Prefecture,Tibet  

作　　者：CHEN Xuehua ZHOU Jianzhong ZHOU Hongyi 

机构地区：[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

出　　处：《Wuhan University Journal of Natural Sciences》2007年第4期705-709,共5页武汉大学学报（自然科学英文版）

基　　金：the National Basic Research Program of China (973 Program)(2003CB415201) ;the Knowledge Innovation Program of Chinese Academy of Sciences (INF105-SDB-27)

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.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.

关 键 词：soil erosion danger degree indicator system analytical hierarchy process Rikaze 

分 类 号：S157.1[农业科学—土壤学]