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(Article of periodic en Anglais - 2012)

Document title

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

Authors(s) and Affiliation(s)

JI J. (1 2) ; KOKUTSE N. (3) ; GENET M. (2) ; FOURCAUD T. (3) ; ZHANG Z. (1) ;
(1) College of Soil and Water Conservation at Beijing Forestry Univ., Key Lab. of soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing, CHINE
(2) Univ. Montpellier 2, UMR AMAP, TA-51/PS2, Montpellier, FRANCE
(3) CIRAD, UMR AMAP, TA-A 51/PS2, Montpellier, FRANCE

Abstract

The goal of this paper is to describe the spatial variability of root additional cohesion on 2 monospecific stands of Robinia pseudoacacia and Platycladus orientalis grown on slopes in the semiarid Loess Plateau of China (Ji County, Shanxi Province), and to analyze numerically the effect of this variability on slopes stability. Root area ratio (RAR) was estimated and compared among different positions around the trees and at 3 different locations along the slope. Roots tensile strength was determined with laboratory mechanical tests. RAR and root tensile strength were used as inputs in 6 different root reinforcement models to calculate root additional cohesion. A 2D finite element model of slope stability was developed and used to calculate the increase in factor of safety (FoS) due to root additional cohesion on rectilinear and terraced slopes. It is showed that the FoS of the slopes reaches a limit value when increasing root additional cohesion

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2012, vol. 92 [pp. 139-154]

Bibliographic references : 1 p.

Collation : 11 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2011.12.008

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
Refdoc record number (ud4) : 26260745 : Permanent link - XML version
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