IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Hydrological Processes and Sediment Yields from Hillslope Croplands of Regosol under Different Slope Gradients
Liu, Quan1,2,3; Zhu, Bo1,3; Tang, Jialiang1,3; Huang, Wenjun2; Zhang, Xifeng1,3
2017
Source PublicationSOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN0361-5995
EISSN1435-0661
Volume81Issue:6Pages:1517-1525
SubtypeArticle
AbstractThis study investigated the hydrological processes of overland flow and interflow for slope gradients of 6.5 degrees, 10, 15, 20, and 25 degrees on hillslope croplands of Regosol under natural rainfall conditions. The generation of overland flow from 6.5 degrees (control) and 10 degrees lagged 30 min behind the rainfall peaks, whereas the other investigated slope gradients were synchronized with the rainfall peaks. Moreover, the soil moisture varied (and interflow was generated) from 25 to 35% in association with increasing slope gradients (from 6.5 to 10, 15, 20, and 25 degrees). The times and peaks of sediment yields corresponded to the overland flow. The total storm runoff discharge averages for the 6.5 degrees, 10, 15, 20, and 25 degrees slope gradients were 39.9 +/- 3.1, 45.1 +/- 4.2, 48.7 +/- 2.9, 51.8 +/- 3.0, and 43.9 +/- 3.6 mm, respectively, with runoff coefficients between 47 and 61%. Interflow comprised between 83 and 91% of the total runoff. Moreover, overland flow and sediment yield discharge for the 15 and 20 degrees slope gradients exhibited significant differences (p < 0.05) from the control (6.5 degrees) and two other gradients (10 and 25 degrees). This study determined that the apparent critical slope gradient for overland flow and sediment yield was between 15 and 20 degrees. Moreover, the relationship of sediment loss flux and the discharge of overland flow can be simulated by the power function and the S function. However, the results showed that slope gradients do not significantly impact interflow, which could be influenced by soil moisture prior to the occurrence of rain.
DOI10.2136/sssaj2017.03.0085
Indexed BySCI
WOS KeywordSOIL-EROSION ; SIMULATED RAINFALL ; INTERRILL EROSION ; LOESS PLATEAU ; RAINDROP-IMPACT ; CITRUS ORCHARDS ; WATER EROSION ; OVERLAND-FLOW ; STEEP SLOPES ; RUNOFF
Language英语
Quartile2区
Funding ProjectNational Science Foundation of China[41430750] ; national key RD plan[2016YFD0200309] ; "Western Light" program from the Chinese Academy of Sciences ; China Postdoctoral Science Foundation[2014M562338]
TOP
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000419646100025
Funding OrganizationNational Science Foundation of China ; national key RD plan ; "Western Light" program from the Chinese Academy of Sciences ; China Postdoctoral Science Foundation
PublisherSOIL SCI SOC AMER
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20746
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorZhu, Bo; Tang, Jialiang
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
2.Mianyang Normal Univ, Mianyang 621000, Peoples R China
3.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Liu, Quan,Zhu, Bo,Tang, Jialiang,et al. Hydrological Processes and Sediment Yields from Hillslope Croplands of Regosol under Different Slope Gradients[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2017,81(6):1517-1525.
APA Liu, Quan,Zhu, Bo,Tang, Jialiang,Huang, Wenjun,&Zhang, Xifeng.(2017).Hydrological Processes and Sediment Yields from Hillslope Croplands of Regosol under Different Slope Gradients.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,81(6),1517-1525.
MLA Liu, Quan,et al."Hydrological Processes and Sediment Yields from Hillslope Croplands of Regosol under Different Slope Gradients".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 81.6(2017):1517-1525.
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