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Influence of bare soil and cultivated land use types upstream of a bank gully on soil erosion rates and energy consumption for different gully erosion zones in the dry-hot valley region, Southwest China
Su, Zhengan1; Xiong, Donghong1; Dong, Yifan1; Yang, Dan1,2; Zhang, Su1,3; Zhang, Baojun1,2; Zheng, Xueyong1,2; Zhang, Jianhui1; Shi, Liangtao4
Corresponding AuthorDonghong Xiong(熊东红)
2015
Source PublicationNATURAL HAZARDS
ISSN0921-030X
EISSN1573-0840
Volume79Issue:S1Pages:S183-S202
SubtypeArticle
AbstractThis study assessed temporal variation in soil erosion rates in response to energy consumption of flow (DE). It employed an in situ bank gully field flume experiment with upstream catchment areas with bare (BLG) or cultivated land (CLG) that drained down to bare gully headcuts. Water discharge treatments ranged from 30 to 120 L Min(-1). Concentrated flow discharge clearly affected bank gully soil erosion rates. Excluding minimal discharge in the CLG upstream catchment area (30 L min(-1)), a declining power function trend (p <= 0.1) was observed with time in soil erosion rates for both BLG and CLG upstream catchment areas and downstream gully beds. Non-steady state soil erosion rates were observed after an abrupt collapse along the headcut slope after prolonged scouring treatments. However, as the experiment progressed, Delta E and energy consumption of flow per unit soil loss (Delta Eu) exhibited a logarithmic growth trend (p < .1) at each BLG and CLG position. Although similar temporal trends in soil erosion and infiltration rates were observed, values clearly differed between BLG and CLG upstream catchment areas. Furthermore, Darcy-Weisbach friction factor (f) values in the CLG upstream catchment area were higher than the corresponding BLG area. In contrast to the BLG upstream catchment area, lower Delta Eu and higher soil erosion rates were observed in the CLG upstream catchment area as a result of soil disturbances. This indicated that intensive land use changes accelerate soil erosion rates in upstream catchment areas of bank gullies and increase soil sediment transport to downstream gullies. Accordingly, reducing tillage disturbances and increasing vegetation cover in upstream catchment areas of bank gullies are essential in the dry-hot valley region of Southwest China.
KeywordBank Gully Headcut Erosion Energy Consumption Of Flow Land Use Dry-hot Valley
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11069-015-1722-x
WOS Subject ExtendedGeology ; Meteorology & Atmospheric Sciences ; Water Resources
Indexed BySCI
WOS KeywordLOESS PLATEAU ; MEDITERRANEAN ENVIRONMENTS ; CONCENTRATED FLOWS ; TEMPORAL VARIATION ; SOUTHEAST SPAIN ; CHANNEL ; QUEENSLAND ; AUSTRALIA ; MIGRATION ; TILLAGE
Language英语
Quartile4区
TOP
WOS SubjectGeosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000364528800010
Funding OrganizationNational Basic Research Program (973 Program) of China(2015CB452704) ; "Western Light" Talents Cultivation program, CAS ; 100 Talents Program of IMHE, CAS(SDSQB-2011-01) ; Special Foundation of the President of CAS ; Youth Foundation of IMHE, CAS
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/13800
Collection山地灾害与地表过程重点实验室
山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci & Minist Water Conservancy, Key Lab Mt Hazards & Earth Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Sichuan Agr Univ, Coll Agron, Chengdu 611130, Peoples R China
4.Yunnan Acad Agr Sci, Inst Trop Ecoagr Sci, Yuanmou 651300, Peoples R China
Recommended Citation
GB/T 7714
Su, Zhengan,Xiong, Donghong,Dong, Yifan,et al. Influence of bare soil and cultivated land use types upstream of a bank gully on soil erosion rates and energy consumption for different gully erosion zones in the dry-hot valley region, Southwest China[J]. NATURAL HAZARDS,2015,79(S1):S183-S202.
APA Su, Zhengan.,Xiong, Donghong.,Dong, Yifan.,Yang, Dan.,Zhang, Su.,...&Shi, Liangtao.(2015).Influence of bare soil and cultivated land use types upstream of a bank gully on soil erosion rates and energy consumption for different gully erosion zones in the dry-hot valley region, Southwest China.NATURAL HAZARDS,79(S1),S183-S202.
MLA Su, Zhengan,et al."Influence of bare soil and cultivated land use types upstream of a bank gully on soil erosion rates and energy consumption for different gully erosion zones in the dry-hot valley region, Southwest China".NATURAL HAZARDS 79.S1(2015):S183-S202.
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