IGSNRR OpenIR
Effect of vegetation on the flow pathways of steep hillslopes: Overland flow plot-scale experiments and their implications
Wang, Lunjiang1,2,3; Zhang, Yanle4; Jia, Junchao5; Zhen, Qing2,3; Zhang, Xingchang2,3
2021-09-01
Source PublicationCATENA
ISSN0341-8162
Volume204Pages:11
Corresponding AuthorZhen, Qing(zhenqing10@nwafu.edu.cn)
AbstractOverland flow pathways probably play a key role in linking vegetation to its effects on runoff generation and soil loss on the hillslope. However, there is little empirical work testing the links. This study aims to address how flow pathway characteristics vary with plant spacing and determine their relationships with infiltration and soil loss. Upslope inflow experiments were carried out on 10 vegetated plots under a small inflow rate. Total flow path width (RW), mean width per flow path (WPP), and total flow path length (FL), were used to quantify the flow pathway characteristics by analyzing photographs of the plot surface taken during the experiment. The results showed that RW and WPP decreased (R-2 = 0.86 and R-2 = 0.90), while the FL increased (R-2 = 0.67) as alfalfa spacing increased. The RW was positively related to the infiltration rate in the early period of the experiment, indicating that runoff loss via infiltration as affected by the flow paths needs to be considered in hydrological models. Runoff velocity was detected to be significantly related to the flow pathway characteristics. The relationship can partially explain the variances of runoff hydraulics on the vegetated hillslopes in previous studies, in which the variation of flow pathways was not taken into account. The soil loss decreased with the RW and WPP while increased with the FL. As the flow pathway characteristics expressed real-time and actual movement of overland flow, they represented the functional connectivity of sediment on the hillslope. The relationships between soil loss and flow pathway became insignificant as the upslope inflow progressed despite no marked change in the flow pathway. Our results imply that both functional connectivity and the soil's resistance to erosion should be considered to obtain a good prediction of the soil loss from hillslopes.
KeywordHillslope Vegetation Flow pathway Hydraulics Infiltration Soil erosion Connectivity
DOI10.1016/j.catena.2021.105438
WOS KeywordSEDIMENT TRANSPORT ; SOIL-EROSION ; WALNUT-GULCH ; ROUGHNESS ; RUNOFF ; CONNECTIVITY ; INFILTRATION ; HYDRAULICS ; WATER ; COEFFICIENTS
Indexed BySCI
Language英语
Funding ProjectState Key Research & Development Plan Project[2017YFC0504704] ; Guizhou Provincial Science and Technology Projects[QKHJC-ZK[2021]YB222] ; Science and Technology Service Network Initiative[KFJ-STS-QYZD-177] ; Light of West China Program[XAB2019B12] ; Introduced Talents Scientific Research Grants of Guizhou University[2019 (27)] ; Top Discipline Construction Project of Guizhou Province[GNYL[2017]007]
Funding OrganizationState Key Research & Development Plan Project ; Guizhou Provincial Science and Technology Projects ; Science and Technology Service Network Initiative ; Light of West China Program ; Introduced Talents Scientific Research Grants of Guizhou University ; Top Discipline Construction Project of Guizhou Province
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000657369600051
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/164036
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhen, Qing
Affiliation1.Guizhou Univ, Coll Forestry, Guiyang 550025, Peoples R China
2.Northwest Agr & Forestry Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
4.Shangluo Univ, Coll Chem Engn & Modern Mat, Shangluo 726000, Peoples R China
5.Bioagr Inst Shaanxi, Xian 710043, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Wang, Lunjiang,Zhang, Yanle,Jia, Junchao,et al. Effect of vegetation on the flow pathways of steep hillslopes: Overland flow plot-scale experiments and their implications[J]. CATENA,2021,204:11.
APA Wang, Lunjiang,Zhang, Yanle,Jia, Junchao,Zhen, Qing,&Zhang, Xingchang.(2021).Effect of vegetation on the flow pathways of steep hillslopes: Overland flow plot-scale experiments and their implications.CATENA,204,11.
MLA Wang, Lunjiang,et al."Effect of vegetation on the flow pathways of steep hillslopes: Overland flow plot-scale experiments and their implications".CATENA 204(2021):11.
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
[Wang, Lunjiang]'s Articles
[Zhang, Yanle]'s Articles
[Jia, Junchao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Lunjiang]'s Articles
[Zhang, Yanle]'s Articles
[Jia, Junchao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Lunjiang]'s Articles
[Zhang, Yanle]'s Articles
[Jia, Junchao]'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.