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

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	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, Liangtao 4
刊名	NATURAL HAZARDS
	2015-11-01
卷号	79 期号:S1 页码:S183-S202
关键词	Bank gully Headcut erosion Energy consumption of flow Land use Dry-hot valley
ISSN号	0921-030X
通讯作者	Donghong Xiong(熊东红)
英文摘要	This 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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
研究领域[WOS]	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
关键词[WOS]	LOESS PLATEAU ; MEDITERRANEAN ENVIRONMENTS ; CONCENTRATED FLOWS ; TEMPORAL VARIATION ; SOUTHEAST SPAIN ; CHANNEL ; QUEENSLAND ; AUSTRALIA ; MIGRATION ; TILLAGE
收录类别	SCI
语种	英语
WOS记录号	WOS:000364528800010
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/13800]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.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
推荐引用方式 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.