IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Identifying the driving factors of sediment delivery ratio on individual flood events in a long-term monitoring headwater basin
Wang Ling-ling1,2; Yao Wen-yi1; Tang Jia-liang; Wang Wen-long2,3; Hou Xin-xin1
2018-08-01
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume15Issue:8Pages:1825-1835
AbstractThe Sediment Delivery Ratio (SDR) has multi-fold environmental implications both in evaluating the soil and water losses and the effectiveness of conservation measures in watersheds. Various factors, including hydrological regime and watershed properties, may influence the SDR at interannual timescales. However, the effect of certain important dynamic factors, such as rainfall peak distribution, runoff erosion power and sediment bulk density, on the sediment delivery ratio of single flood events (SDRe) has received little attention. The Qiaogou headwater basin is in the hilly-gully region of the Chinese Loess Plateau, and it encompasses a 0.45 km2 catchment. Three large-scale field runoff plots at different geomorphological positions were chosen to obtain the observation data, and the 20-year period between 1986 and 2005 is presented. The results showed that the SDRe of the Qiaogou headwaters varied from 0.49 to 2.77. Among the numerous influential factors, rainfall and runoff were the driving factors causing slope erosion and sediment transport. The rainfall erosivity had a significant positive relationship with the sediment transport modulus (R (2)=0.85, P < 0.01) but had no significant relationship with SDRe. The rainfall peak coefficient was significantly positively correlated with the SDRe (R (2)=0.64, P < 0.05), indicating the influence of rainfall energy distribution on the SDRe. The runoff erosion power index was not only significantly related to the sediment transport modulus (R (2)=0.84, P < 0.01) but also significantly related to the SDRe (R (2)=0.57, P < 0.01). In addition, the relative bulk density was significantly related to the SDRe, indicating that hyper-concentrated flow characteristics contributed to more transported sediment in the catchment. Thus, the rainfall peak coefficient, runoff erosion power and sediment relative bulk density could be used as dynamic indexes to predict the SDRe in the hilly areas of the Chinese Loess Plateau.
KeywordSediment delivery ratio Single flood events Rainfall erosivity Runoff erosion power Hyper-concentrated flow
DOI10.1007/s11629-017-4739-7
WOS KeywordLOESS PLATEAU ; SCALE ; CHINA
Language英语
Funding ProjectNational key research priorities program of China[2016YFC0402402] ; National Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07101001] ; National Natural Science Foundation[41301299] ; Construction Project of Innovative Scientific and Technological Talents in Henan Province[162101510004]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000442239600015
Funding OrganizationNational key research priorities program of China ; National Major Science and Technology Program for Water Pollution Control and Treatment ; National Natural Science Foundation ; Construction Project of Innovative Scientific and Technological Talents in Henan Province
PublisherSCIENCE PRESS
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23773
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorWang Wen-long
Affiliation1.Minist Water Resources, Yellow River Inst Hydraul Res, Key Lab Loess Plateau Soil Eros & Water Loss Proc, Zhengzhou 450003, Henan, Peoples R China
2.Northwest A&F Univ, Coll Resource & Environm, Xianyang 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
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
Wang Ling-ling,Yao Wen-yi,Tang Jia-liang,et al. Identifying the driving factors of sediment delivery ratio on individual flood events in a long-term monitoring headwater basin[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(8):1825-1835.
APA Wang Ling-ling,Yao Wen-yi,Tang Jia-liang,Wang Wen-long,&Hou Xin-xin.(2018).Identifying the driving factors of sediment delivery ratio on individual flood events in a long-term monitoring headwater basin.JOURNAL OF MOUNTAIN SCIENCE,15(8),1825-1835.
MLA Wang Ling-ling,et al."Identifying the driving factors of sediment delivery ratio on individual flood events in a long-term monitoring headwater basin".JOURNAL OF MOUNTAIN SCIENCE 15.8(2018):1825-1835.
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