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Effects of incorporated plant litter on soil resistance to flowing water erosion in the Loess Plateau of China
Sun, Long1,2; Zhang, Guang-hui1,3; Liu, Fa3; Luan, Li-li3
2016-07-01
Source PublicationBIOSYSTEMS ENGINEERING
ISSN1537-5110
Volume147Pages:238-247
Corresponding AuthorZhang, Guang-hui(ghzhang@bnu.edu.cn)
AbstractPlant litter can be incorporated into top soil via different approaches, which probably influence soil erosion processes controlled by overland flow. However, few studies have been conducted to quantify the effects of incorporated plant litter on the soil detachment process by overland flow. This study was performed to investigate the effects of incorporated litter rate on soil detachment capacity and soil resistance to flowing water erosion using undisturbed soil samples taken from 16 plots (three plant litter species by five incorporation rates, and one bare control) and were subjected to six different flow shear stresses in the Loess Plateau. The results showed that soil detachment capacity decreased exponentially with incorporated plant litter rate. A threshold of 0.35 kg m(-2) of litter needed to be incorporated to provide protection of soil from overland flow erosion. The effects of litter incorporation rate on soil detachment capacity was not significant when the incorporation rate was greater than 0.35 kg m(-2). Rill erodibility also decreased exponentially with the incorporated plant litter rate. The shape of plant litter fragments was hypothesised to account for the variations in the effects of different incorporated litter species on soil detachment capacity and rill erodibility. A distinguishable increasing linear trend was observed between critical shear stress and litter incorporated rate, but with a weak correlation. Critical shear stress also increased with incorporated rate and was related to soil cohesion. (C) 2016 IAgrE. Published by Elsevier Ltd. All rights reserved.
KeywordIncorporated plant litter Soil detachment Rill erodibility Critical shear stress The Loess Plateau
DOI10.1016/j.biosystemseng.2016.04.017
WOS KeywordDIFFERENT LAND USES ; OVERLAND-FLOW ; RILL EROSION ; TEMPORAL VARIATION ; CONCENTRATED FLOW ; RESIDUE INCORPORATION ; DETACHMENT CAPACITY ; TILLAGE PRACTICES ; ERODIBILITY ; RUNOFF
Indexed BySCI
Language英语
Funding ProjectHundred Talents Project of the Chinese Academy of Sciences ; General Program of National Natural Science Foundation of China[41271287] ; General Program of National Natural Science Foundation of China[41301295] ; State Key Program of National Natural Science of China[41530858]
Funding OrganizationHundred Talents Project of the Chinese Academy of Sciences ; General Program of National Natural Science Foundation of China ; State Key Program of National Natural Science of China
WOS Research AreaAgriculture
WOS SubjectAgricultural Engineering ; Agriculture, Multidisciplinary
WOS IDWOS:000379372300020
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/66577
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Guang-hui
Affiliation1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Beijing Normal Univ, Sch Geog, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Sun, Long,Zhang, Guang-hui,Liu, Fa,et al. Effects of incorporated plant litter on soil resistance to flowing water erosion in the Loess Plateau of China[J]. BIOSYSTEMS ENGINEERING,2016,147:238-247.
APA Sun, Long,Zhang, Guang-hui,Liu, Fa,&Luan, Li-li.(2016).Effects of incorporated plant litter on soil resistance to flowing water erosion in the Loess Plateau of China.BIOSYSTEMS ENGINEERING,147,238-247.
MLA Sun, Long,et al."Effects of incorporated plant litter on soil resistance to flowing water erosion in the Loess Plateau of China".BIOSYSTEMS ENGINEERING 147(2016):238-247.
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