Abstract
Evaluating the Effect of Root Cohesion on Shallow Landslides for Physically Based Modeling
Highlights
Landslides in mountainous regions induced by heavy rain can cause significant damage to human livelihoods
Described in many studies, shallow landslides can be caused by various factors, especially as shown in recent studies on the tree root distribution, where vegetation roots were shown to have a growth limit of 2–3 m depth.[8,9] The limit of tree root growth is closely related to the soil layer, which is affected by the geological structure.[8,9] as the root system of trees is distributed in the spatial range where shallow landslides occur,(10) it is closely related to slope stability and collapse occurrence
In other words, when the roots of trees growing on a slope receive disintegration energy, the surface soil layer moves and deforms, and when the tensile resistance of the roots acts in the direction of the bedrock, the shear resistance of the soil increases, which acts in the opposite direction of the force.[11,12] the greater the tensile resistance of the tree roots, the greater the soil shear resistance, which increases slope stability.[12,13,14,15,16,17,18,19] the effect of root reinforcement[11,20] has been commonly recognized as a typical feature of trees in preventing surface collapse.[10]
Summary
Landslides in mountainous regions induced by heavy rain can cause significant damage to human livelihoods. Described in many studies, shallow landslides can be caused by various factors, especially as shown in recent studies on the tree root distribution, where vegetation roots were shown to have a growth limit of 2–3 m depth.[8,9] The limit of tree root growth is closely related to the soil layer (primarily the layer of soil above bedrock), which is affected by the geological structure.[8,9] as the root system of trees is distributed in the spatial range where shallow landslides occur (disintegration of the sloping plane),(10) it is closely related to slope stability and collapse occurrence. In other words, when the roots of trees growing on a slope receive disintegration energy, the surface soil layer moves and deforms, and when the tensile resistance of the roots acts in the direction of the bedrock, the shear resistance of the soil increases, which acts in the opposite direction of the force.[11,12] the greater the tensile resistance (tensile strength) of the tree roots, the greater the soil shear resistance (shear strength), which increases slope stability.[12,13,14,15,16,17,18,19] the effect of root reinforcement[11,20] has been commonly recognized as a typical feature of trees in preventing surface collapse.[10]
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