IGSNRR OpenIR
sedimentloadchangewitherosionprocessesundersimulatedrainfallevents
Sun Liying1; Fang Haiyan2; Cai Qiangguo2; Yang Xihua3; He Jijun4; Zhou John L5; Wang Xunming2
2019
Source Publicationjournalofgeographicalsciences
ISSN1009-637X
Volume29Issue:6Pages:1001
AbstractIt is of great significance to quantify sediment load changing with erosion processes for improving the precision of soil loss prediction. Indoor rainfall experiments were conducted in 2 rainfall intensities(90 mm·h~(-1) and 120 mm·h~(-1)), four slope gradients(17.60%, 26.80%, 36.40%, 46.60%) and 2 slope lengths(5 m, 10 m). Erosion processes are divided into five stages. Results show that sediment yield is mainly sourced from rill erosion, contributing from 54.60% to 95.70% and the duration of which is extended by slope gradients. Sediment load and sediment concentration are significantly different along erosion stages, with the highest values in rill development stage(S_(IV)). Surface flow velocities(interrill and rill) demonstrate less significant differences along erosion stages. Rainfall intensity increases sediment load in all stages, with up to 12.0 times higher when changing from 90 to 120 mm·h~(-1). There is an increasing trend for sediment load and sediment concentration with the rising slope gradient, however, fluctuations existed with the lowest values on 26.80% and 36.40%, respectively, among different treatments. The slope gradient effects are enhanced by rainfall intensity and slope length. Results from this study are important for validating and improving hillslope erosion modelling at each erosion stage.
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/128097
Collection中国科学院地理科学与资源研究所
Affiliation1.中国科学院水土保持研究所
2.中国科学院地理科学与资源研究所
3.New South Wales Office of Environment and Heritage
4.首都师范大学
5.悉尼科技大学
Recommended Citation
GB/T 7714
Sun Liying,Fang Haiyan,Cai Qiangguo,et al. sedimentloadchangewitherosionprocessesundersimulatedrainfallevents[J]. journalofgeographicalsciences,2019,29(6):1001.
APA Sun Liying.,Fang Haiyan.,Cai Qiangguo.,Yang Xihua.,He Jijun.,...&Wang Xunming.(2019).sedimentloadchangewitherosionprocessesundersimulatedrainfallevents.journalofgeographicalsciences,29(6),1001.
MLA Sun Liying,et al."sedimentloadchangewitherosionprocessesundersimulatedrainfallevents".journalofgeographicalsciences 29.6(2019):1001.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun Liying]'s Articles
[Fang Haiyan]'s Articles
[Cai Qiangguo]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun Liying]'s Articles
[Fang Haiyan]'s Articles
[Cai Qiangguo]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun Liying]'s Articles
[Fang Haiyan]'s Articles
[Cai Qiangguo]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.