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The Influences of Riparian Vegetation on Bank Failures of a Small Meadow-Type Meandering River
Zhu, Haili1,2,3,4; Hu, Xiasong1,2,4; Li, Zhiwei5; Song, Lu4; Li, Ke4; Li, Xilai6; Li, Guorong4
2018-06-01
发表期刊WATER
卷号10期号:6
文章类型Article
摘要The outer banks of meadow-type meandering river bends in the source zone of the Yellow River are especially vulnerable to bank failure. This study aims to understand how vegetation affects bank stability and the mechanism of bank failure, especially via a prediction of the width of a collapsed block of small rivers through a proposed bank stability equilibrium as well as field sampling. Soil and vegetation properties were surveyed at four sites near the riverbank in 2013-2016. It was found that the failed blocks had, on average, a dimension of 0.865 m (width) by 0.817 m (thickness) by 2.228 m (length). The variability in the size of all the failed blocks was attributed predominantly to the roots of plants. Block thickness could be logarithmically predicted by root length at R-2 0.76. The block width predicted from the proposed equilibrium equation deviated from in situ measurements by approximately 22.1%, a discrepancy highly subject to the overestimation of root reinforcement using Wu's model. By reducing the coefficient of Wu's model from 1.2 to 0.85, the proposed equilibrium equation was reliable to predict the width of bank collapse. However, its applicability to other study areas needs to be verified in further studies.
关键词Meandering River Equilibrium Equation Cantilever Bank Failure Root Tensile Strength Riparian Meadow Yellow River Source Zone
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]TREE ROOTS ; SPATIAL VARIABILITY ; SHEAR-STRENGTH ; STREAM BANKS ; STABILITY ; EROSION ; REINFORCEMENT ; CHANNEL ; MODEL
收录类别SCI
语种英语
WOS研究方向Water Resources
WOS类目Water Resources
WOS记录号WOS:000436515100023
出版者MDPI
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6685
专题中国科学院青海盐湖研究所
通讯作者Hu, Xiasong
作者单位1.Chinese Acad Sci, Key Lab Comprehens & Highly Efficient Utilizat Sa, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China
2.Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Qinghai, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Qinghai Univ, Dept Geol Engn, Xining 810016, Qinghai, Peoples R China
5.Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha 410114, Hunan, Peoples R China
6.Qinghai Univ, Coll Agr & Anim Husb, Xining 810016, Qinghai, Peoples R China
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GB/T 7714
Zhu, Haili,Hu, Xiasong,Li, Zhiwei,et al. The Influences of Riparian Vegetation on Bank Failures of a Small Meadow-Type Meandering River[J]. WATER,2018,10(6).
APA Zhu, Haili.,Hu, Xiasong.,Li, Zhiwei.,Song, Lu.,Li, Ke.,...&Li, Guorong.(2018).The Influences of Riparian Vegetation on Bank Failures of a Small Meadow-Type Meandering River.WATER,10(6).
MLA Zhu, Haili,et al."The Influences of Riparian Vegetation on Bank Failures of a Small Meadow-Type Meandering River".WATER 10.6(2018).
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