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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
刊名	Biosystems engineering
	2016-07-01
卷号	147页码:238-247
关键词	Incorporated plant litter Soil detachment Rill erodibility Critical shear stress The loess plateau
ISSN号	1537-5110
DOI	10.1016/j.biosystemseng.2016.04.017
通讯作者	Zhang, guang-hui(ghzhang@bnu.edu.cn)
英文摘要	Plant 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.
WOS关键词	DIFFERENT LAND USES ; OVERLAND-FLOW ; RILL EROSION ; TEMPORAL VARIATION ; CONCENTRATED FLOW ; RESIDUE INCORPORATION ; DETACHMENT CAPACITY ; TILLAGE PRACTICES ; ERODIBILITY ; RUNOFF
WOS研究方向	Agriculture
WOS类目	Agricultural Engineering ; Agriculture, Multidisciplinary
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000379372300020
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374720
专题	中国科学院大学
通讯作者	Zhang, Guang-hui
作者单位	1.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
推荐引用方式 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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