Effects of tillage practices and slope on runoff and erosion of soil from the Loess Plateau, China, subjected to simulated rainfall

doi:10.1016/j.still.2016.09.007

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Effects of tillage practices and slope on runoff and erosion of soil from the Loess Plateau, China, subjected to simulated rainfall
	Wang, Linhua 1; Dalabay, Nurmolda 1; Lu, Pei 1; Wu, Faqi 1,2; Wu, FQ (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China.
文章类型	Article
	2017
发表期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
通讯作者邮箱	wufaqi@263.net
卷号	166 页码:147-156
摘要	Soil erosion, particularly during summer fallow period, in sloped farmland has been identified as a critical threat to sustainable agricultural development in the Loess Plateau of China. However, the effects of varying tillage practices during the summer fallow period have not been fully investigated. The objective of this study was to determine the effects of tillage practices on runoff and sediment loss under plot (4.0 m in length and 1.0 m in width) rainfall simulations. Runoff initiation time, runoff amount, sediment loss and cumulative infiltration amount were recorded. One rainfall intensity (90 mm h(-1), 40 min), three slopes (5 degrees,10 degrees, and 15 degrees) and four prevalent tillage practices (Artificial Digging, AD; Artificial Hoeing, AH; Contour Plow, CP; and Traditional Plow, TP) were studied. Two indices, runoff reduction benefits (RRB) and sediment reduction benefits (SRB), were selected to evaluate the effect of the practice on controlling runoff and sediment Compared to TP treatment, the AD, AH and CP were more effective in reducing the magnitude of runoff amount and sediment loss as well as increasing the rain water infiltration amount. CP with a 15 degrees slope was an exception in which the sediment loss increased. In general, the SRB was greater than the RRB for a given tillage practice under the same slope, suggesting that the benefits from sediment reduction were more effective than the benefits from runoff reduction. RRB and SRB were the largest for AD, followed by AH and CP, irrespective of slopes. The capacity of the three tillage practices to reduce runoff and sediment decreased as the slope increased. In particular, AD at a 5 degrees slope had the best performance in reducing runoff and sediment loss; however, SRB and RRB were -57% and 1%, respectively, for a CP plot with a 15 degrees slope. This finding suggested that CP had a higher sediment loss and a similar runoff amount compared to those of TP. These results of plot simulated rainfall will contribute to our knowledge about the effects of different tillage practices on soil erosion from sloped farmland. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Tillage Practice Soil Erosion Reduction Benefits Plot Rainfall Simulation Loess Plateau
学科领域	Agriculture
DOI	10.1016/j.still.2016.09.007
URL	查看原文
收录类别	SCI
出版地	AMSTERDAM
语种	英语
WOS记录号	WOS:000391077900017
出版者	ELSEVIER SCIENCE BV
项目资助者	National Natural Science Foundation of China [41271288] ; National Natural Science Foundation of China [41271288]
引用统计
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/8030
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Wu, FQ (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China.
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 2.Northwest A&F Univ, Coll Resources & Environm, Yangling 712100, Peoples R China
推荐引用方式 GB/T 7714	Wang, Linhua,Dalabay, Nurmolda,Lu, Pei,et al. Effects of tillage practices and slope on runoff and erosion of soil from the Loess Plateau, China, subjected to simulated rainfall[J]. SOIL & TILLAGE RESEARCH,2017,166:147-156.
APA	Wang, Linhua,Dalabay, Nurmolda,Lu, Pei,Wu, Faqi,&Wu, FQ .(2017).Effects of tillage practices and slope on runoff and erosion of soil from the Loess Plateau, China, subjected to simulated rainfall.SOIL & TILLAGE RESEARCH,166,147-156.
MLA	Wang, Linhua,et al."Effects of tillage practices and slope on runoff and erosion of soil from the Loess Plateau, China, subjected to simulated rainfall".SOIL & TILLAGE RESEARCH 166(2017):147-156.