Effect of spatial variation of tree root characteristics on slope stability. A case study on Black Locust (Robinia pseudoacacia) and Arborvitae (Platycladus orientalis) stands on the Loess Plateau, China

Ji, Jinnan; Kokutse, Nomessi; Genet, Marie; Fourcaud, Thierry; Zhang, Zhiqiang

doi:10.1016/j.catena.2011.12.008

Cited by 136 publications

(67 citation statements)

References 48 publications

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“…As pointed out by Burylo Values of the root area ratio of the studied black alder and basket willow are similar to the results obtained for root systems of black poplar and black locust from that region (Zydroń et al, 2016), while measurements of root systems of these species were taken at a slightly different distance from tree trunks (1.0 m). Values of the root area ratio of the studied species are also comparable to the results of measurements of a 17-year-old Chinese thuja, lower than in the case of a 17-year-old black locust (Ji et al, 2012) and higher than root systems of 9-and 10-year-old poplars (Douglas et al, 2010) . So, it can be stated that the area ratio values of the studied plant species are similar to each other and are within the range provided in literature for young trees.…”

Section: Root Area Ratiosupporting

confidence: 71%

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The Effect of Root Reinforcement Exemplified by Black Alder (Alnus Glutinosa Gaertn.) and Basket Willow (Salix Viminalis) Root Systems – Case Study in Poland

Zydroń¹

2018

Appl. Ecol. Env. Res.

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Zydroń -Skórski: The effect of root reinforcement exemplified by black alder and basket willow root systems - Abstract. This paper is focused on evaluation of the effect of roots of two species -black alder (Alnus glutinosa Gaerin.) and basket willow (Salix viminalis) on the increase in soil shear strength (root cohesion). The second aim of the paper was to compare the results of calculating root cohesion using the classical Wu/Waldron model and selected fiber bundle models, especially in the context of determining the influence of the criterion of distribution of stresses on calculation results. The research on the studied plant species was conducted on a seven-year plantation of energy crops located in Krakow, Poland, where the test area was modified by covering the natural site by anthropogenic soil. In order to determine the root cohesion site investigations, which included measurements of root area ratio, and laboratory tests, which included determination of root tensile strength, were conducted. The results of root cohesion calculation revealed that the studied species have relatively low values of this parameter. It was also shown that fiber bundle models yield lower values of root cohesion than the classic Wu-Waldron model. Among the fiber bundle models, the lowest values of the investigated parameter were obtained using the deformation model that takes into account the function of probability distribution of root tensile strength.

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Section: Root Area Ratiosupporting

confidence: 71%

“…The same relationship was obtained for the other models. Similar relationships concerning the differences in results of calculations of root cohesion and the order of root breaking in the bundle, obtained using FBM1, FBM2 and FBM3 models, are described in papers by Mao et al (2012) and Ji et al (2012).…”

Section: Root Cohesionmentioning

confidence: 57%

The Effect of Root Reinforcement Exemplified by Black Alder (Alnus Glutinosa Gaertn.) and Basket Willow (Salix Viminalis) Root Systems – Case Study in Poland

Zydroń¹

2018

Appl. Ecol. Env. Res.

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“…2, Böll et al 2009). Practitioners and land managers need to understand the benefits and possible drawbacks of the use of vegetation in bio-and eco-engineering systems and to determine thresholds of effectiveness (Ji et al 2012;.…”

Section: Ecological Engineeringmentioning

confidence: 99%

“…Developing alternative techniques adapted to specific situations is an urgent priority. One of the most common approaches consists of using the Finite Element Method (FEM) to solve mechanical and/or hydrological continuous equations (Mickovski et al 2011;Ji et al 2012;Mao et al 2014 Bourrier et al (2013) to simulate the mechanical interactions between roots and soil in a shear test at a small spatial scale. Coupled hydromechanical equations, which are represented with partial differential equations, can be directly solved using FEM.…”

Section: Alternative Modelsmentioning

confidence: 99%

Ecological mitigation of hillslope instability: ten key issues facing researchers and practitioners

et al. 2014

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Background Plants alter their environment in a number of ways. With correct management, plant communities can positively impact soil degradation processes such as surface erosion and shallow landslides. However, there are major gaps in our understanding of physical and ecological processes on hillslopes, and the application of research to restoration and engineering projects.Scope To identify the key issues of concern to researchers and practitioners involved in designing and implementing projects to mitigate hillslope instability, we organized a discussion during the From this discussion, ten key issues were identified, considered as the kernel of future studies concerning the impact of vegetation on slope stability and erosion processes. Each issue is described and a discussion at the end of this paper addresses how we can augment the use of ecological engineering techniques for mitigating slope instability. Conclusions We show that through fundamental and applied research in related fields (e.g., soil formation and biogeochemistry, hydrology and microbial ecology), reliable data can be obtained for use by practitioners seeking adapted solutions for a given site. Through fieldwork, accessible databases, modelling and collaborative projects, awareness and acceptance of the use of plant material in slope restoration projects should increase significantly, particularly in the civil and geotechnical communities.

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“…Shallow landslides and debris flows are common, especially following intense storms or extended periods of heavy rainfall (Ren 2004;Zhang et al 2007). As the slip plane of shallow landslides is relatively near the slope surface (generally no more than 2 m deep; Zhou et al 2003;Ji et al 2012), root strength and density are key considerations in determination of the most appropriate vegetation cover as a part of hillslope management strategies (Thornes 1990;Morgan 1996;Gray and Sotir 1996;Mitsch and Jorgensen 2003;Odum and Odum 2003).…”

Section: Introductionmentioning

confidence: 99%

An exploratory analysis of vegetation strategies to reduce shallow landslide activity on loess hillslopes, Northeast Qinghai-Tibet Plateau, China

Brierley

Hong

et al. 2013

J. Mt. Sci.

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Heavy summer rainfall induces significant soil erosion and shallow landslide activity on the loess hillslopes of the Xining Basin at the northeast margin of the Qinghai-Tibet Plateau. This study examines the mechanical effects of five native shrubs that can be used to reduce shallow landslide activity. We measured single root tensile resistance and shear resistance, root anatomical structure and direct shear and triaxial shear for soil without roots and five rootsoil composite systems. Results show that Atriplex canescens (Pursh) Nutt. possessed the strongest roots, followed by Caragana korshinskii Kom., Zygophyllum xanthoxylon (Bunge) Maxim., Nitraria tangutorum Bobr. and Lycium chinense Mill. Single root strength and shear resistance relationships with root diameter are characterized by power or exponential relations, consistent with the MohrCoulomb law. Root mechanical strength reflects their anatomical structure, especially the percentage of phloem and xylem cells, and the degree and speed of periderm lignifications. The cohesion force of rootsoil composite systems is notably higher than that of soil without roots, with increasing amplitudes of cohesion force for A. canescens, C. korshinskii, Z. xanthoxylon, N. tangutorum and L. chinense of 75.9%, 75.1%, 36.2%, 24.6% and 17.0 % respectively. When subjected to shear forces, the soil without root samples show much greater lateral deformation than the root-soil composite systems, reflecting the restraining effects of roots. Findings from this paper indicate that efforts to reduce shallow landslides in this region by enhancing root reinforcement will be achieved most effectively using A. canescens and C. korshinskii.

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Effect of spatial variation of tree root characteristics on slope stability. A case study on Black Locust (Robinia pseudoacacia) and Arborvitae (Platycladus orientalis) stands on the Loess Plateau, China

Cited by 136 publications

References 48 publications

The Effect of Root Reinforcement Exemplified by Black Alder (Alnus Glutinosa Gaertn.) and Basket Willow (Salix Viminalis) Root Systems – Case Study in Poland

The Effect of Root Reinforcement Exemplified by Black Alder (Alnus Glutinosa Gaertn.) and Basket Willow (Salix Viminalis) Root Systems – Case Study in Poland

Ecological mitigation of hillslope instability: ten key issues facing researchers and practitioners

An exploratory analysis of vegetation strategies to reduce shallow landslide activity on loess hillslopes, Northeast Qinghai-Tibet Plateau, China

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