Comparison of runoff and soil loss in different tillage systems in the Mollisol region of Northeast China

doi:10.1016/j.still.2017.10.005

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	Comparison of runoff and soil loss in different tillage systems in the Mollisol region of Northeast China
	Lu, Jia 3,4; Bian, Feng 3,4; Zheng, FL (reprint author), Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.; Xu, Ximeng 3,4; Zheng, Fenli 3,4; Wilson, G. V 2; He, Chao 3,4
刊名	SOIL & TILLAGE RESEARCH
	2018
卷号	177 页码:1-11
关键词	Contour Ridge System Ridge Failure Overland Flow Concentration Conservation Tillage Rainfall Simulation
ISSN号	0167-1987
DOI	10.1016/j.still.2017.10.005
文献子类	Article
英文摘要	Longitudinal ridge tillage is the conventional tillage method in the cold, Mollisol region of Northeast China in which furrows are oriented up and down the slope. In part due to the use of this tillage system with large slope lengths, soil erosion is a serious problem in this region. Currently, it is unclear what the best tillage system and ridge orientation is for sustainable agriculture in this region. Thus to compare the runoff and soil loss in longitudinal (LRS) and contour ridge (CRS) systems to a flat tillage system (FTS), a series of simulated rainfall experiments were conducted. A large soil pan (8 m-long, 1.5 m-wide, and 0.6 m-deep) and a side sprinkler rainfall simulation system were used in this study with the three tillage systems (LRS, CRS, FTS) under three rainfall intensities (50, 75 and 100 mm h(-1)) at a 5 slope gradient. The results showed that runoff and soil loss in the LRS were larger than those in the CRS and FTS due to a shift in erosion pattern from sheet to concentrated flow erosion along furrows which led to shear stress increases. Contour ridge failures occurred in the 75 and 100 mm h-1 treatments by breaching of ridges when water stored in furrows exceeded their storage capacity. Breaching changed the runoff and soil loss by providing a large sediment source to the convergent flow. Water storage of CRS furrows was constant as rainfall intensity varied which led to overtopping during large storm conditions. Shifting conventional LRS to CRS with modifications to retain more rainwater during low to moderate rainfall events is highly recommended as this would reduce soil loss and enhance infiltration. The FTS exhibited the lowest runoff and soil loss which is recommended for the Mollisol region of Northeast China in large storm conditions.
学科主题	Soil Science
出版地	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000424073900001
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7831]
专题	水保所科研产出--SCI_2018--SCI
通讯作者	Zheng, FL (reprint author), Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.MWR, Yangling 712100, Shaanxi, Peoples R China 2.USDA ARS, Natl Sedimentat Lab, Oxford, MS 38655 USA 3.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Lu, Jia,Bian, Feng,Zheng, FL ,et al. Comparison of runoff and soil loss in different tillage systems in the Mollisol region of Northeast China[J]. SOIL & TILLAGE RESEARCH,2018,177:1-11.
APA	Lu, Jia.,Bian, Feng.,Zheng, FL .,Xu, Ximeng.,Zheng, Fenli.,...&He, Chao.(2018).Comparison of runoff and soil loss in different tillage systems in the Mollisol region of Northeast China.SOIL & TILLAGE RESEARCH,177,1-11.
MLA	Lu, Jia,et al."Comparison of runoff and soil loss in different tillage systems in the Mollisol region of Northeast China".SOIL & TILLAGE RESEARCH 177(2018):1-11.