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Effects of tillage practices and slope on runoff and erosion of soil from the Loess Plateau, China, subjected to simulated rainfall
Wang, Linhua1; Dalabay, Nurmolda1; Lu, Pei1; Wu, Faqi1,2; Wu, FQ (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China.
SubtypeArticle
2017
Source PublicationSOIL & TILLAGE RESEARCH
ISSN0167-1987
description.correspondentemailwufaqi@263.net
Volume166Pages:147-156
AbstractSoil 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.
KeywordTillage Practice Soil Erosion Reduction Benefits Plot Rainfall Simulation Loess Plateau
Subject AreaAgriculture
DOI10.1016/j.still.2016.09.007
URL查看原文
Indexed BySCI
Publication PlaceAMSTERDAM
Language英语
WOS IDWOS:000391077900017
PublisherELSEVIER SCIENCE BV
Funding OrganizationNational Natural Science Foundation of China [41271288] ; National Natural Science Foundation of China [41271288]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8030
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorWu, FQ (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China.
Affiliation1.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
Recommended Citation
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.
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