个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 水利学院副院长,水力学研究所所长,工程水力学实验室主任
性别:女
毕业院校:大连理工大学
学位:博士
所在单位:水利工程系
学科:水力学及河流动力学
联系方式:0411-84708509
电子邮箱:liuyakun@dlut.edu.cn
Landslides on the Loess Plateau of China: a latest statistics together with a close look
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论文类型:期刊论文
发表时间:2017-04-01
发表刊物:NATURAL HAZARDS
收录刊物:SCIE
卷号:86
期号:3
页面范围:1393-1403
ISSN号:0921-030X
关键字:Geological hazards; Landslides; Soil yield; Triggering mechanism
摘要:Landslide plays an important role in landscape evolution, delivers huge amounts of sediment to rivers and seriously affects the structure and function of ecosystems and society. Here, a statistical analysis together with a field investigation was carried out on the Loess Plateau of China to address the challenges. The study tracks landslide-related deaths and collects knowledge about this natural hazard. Since the 1980s, 53 fatal landslides have occurred, causing 717 deaths. As the most important trigger, rainfall induced 40% of the catastrophic landslides, while other factors, i.e., human activities, freeze-thaw and earthquake, accounted for 36, 23 and 1%, respectively. Furthermore, landslide frequency and death toll related to human activities were increasing as time went on. Landslide also plays an important role in sediment delivery, especially in areas with steep terrain. Sediment discharge from landslides accounts for a considerable proportion of the total soil loss in the upper and middle reaches of the Yellow River. In some catchments of the Loess Plateau, landslides contributed over 50% of the total sediment discharge. The result shows that landslide is a widespread geologic hazard in the rural area of the Loess Plateau, China.