中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地理科学与资源研究所
  3. 中国科学院地理科学与资源研究所
Experimental study of shallow mass movements on gully slopes and associated sediment under rainfall on the Chinese loess plateau

文献类型：期刊论文

作者Guo, Wenzhao1,2; Xu, Xiangzhou3; Wang, Wenlong1,2; Zhu, Tongxin4; Liu, Yakun3
刊名GEOMORPHOLOGY
出版日期2020-02-01
卷号350页码:9
关键词Mass movement Soil erosion Landslide Gully slope Sediment yield Chinese Loess Plateau
ISSN号0169-555X
DOI10.1016/j.geomorph.2019.106919
通讯作者Wang, Wenlong(nwafu_wwl@163.com)
英文摘要Mass movements on gully slopes are the main contributors to gully-bank expansion and are the major source of sediment delivered to rivers; however, they are often overlooked because they are either too small or too time-consuming to measure in the field. To resolve this challenge, a novel topography meter was used to observe shallow mass movements on the gully slopes of the Loess Plateau under simulated rainfall. The experiment showed that the cumulative shallow mass movement volume logarithmically increased with the rainfall amount. The critical rainfall for shallow mass movement occurrence was about 28 mm at a rainfall intensity of 50 mm h(-1). The results also show that soil water content was a key element controlling the occurrence of the shallow mass movements, and the minimal soil water content for permitting shallow mass movements was about 23.1-25.6% for 10-20 cm deep soil. Shallow mass movement on gully slopes has a significant influence on sediment yield. The sediment concentration and sediment transport rate during mass movement failure were on average 3.6 times and 4.0 times higher than that during pre-failure events, respectively. Our results have important implications for understanding the connectivity of sediment discharge and mass movements on gully slopes in hilly and gully watersheds. (C) 2019 Published by Elsevier B.V.
WOS关键词WAIPAOA CATCHMENT ; GRAVITY EROSION ; LANDSLIDE ; FREQUENCY ; SOIL ; VEGETATION ; INITIATION ; MAGNITUDE ; RESERVOIR ; FAILURE
资助项目National Natural Science Foundation of China[51879032] ; National Natural Science Foundation of China[41907057] ; National Natural Science Foundation of China[41571275] ; National Key RD Project[2016YFC0402504] ; Western Light Foundation of the Chinese Academy of Sciences[XAB2O18BO7] ; Fundamental Research Funds for the Central Universities[2452018046]
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000532088300023
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Key RD Project ; Western Light Foundation of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities
源URL[http://ir.igsnrr.ac.cn/handle/311030/159656]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Wenlong
作者单位1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, Inst Water & Soil Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
3.Dalian Univ Technol, Sch Hydraul Engn, Dalian 116024, Peoples R China
4.Univ Minnesota Duluth, Dept Geog Urban Environm & Sustainabil Studies, Duluth, MN 55812 USA
推荐引用方式
GB/T 7714		 Guo, Wenzhao,Xu, Xiangzhou,Wang, Wenlong,et al. Experimental study of shallow mass movements on gully slopes and associated sediment under rainfall on the Chinese loess plateau[J]. GEOMORPHOLOGY,2020,350:9.
APA Guo, Wenzhao,Xu, Xiangzhou,Wang, Wenlong,Zhu, Tongxin,&Liu, Yakun.(2020).Experimental study of shallow mass movements on gully slopes and associated sediment under rainfall on the Chinese loess plateau.GEOMORPHOLOGY,350,9.
MLA Guo, Wenzhao,et al."Experimental study of shallow mass movements on gully slopes and associated sediment under rainfall on the Chinese loess plateau".GEOMORPHOLOGY 350(2020):9.

入库方式： OAI收割

来源：地理科学与资源研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。