Over the last half century

tremendous theoretical results have been achieved in the study of soil reinforcement by root system in various aspects.This paper focuses on the brief description of the relevant theoretical models of soil reinforcement by root system

including Mohr-Coulomb Strength Theory

Reinforced Theory

and Anchorage Theory

as well as major mathematical models covering Side Roots Theoretical Model(W-Model)

Vertical Root-soil Interacting Mechanics Model

and Lateral Root-soil Interacting Mechanics Model.In addition

key study fields are analyzed and recommended pertaining to root distribution

friction of root-soil

and root mechanics.