The variations of soil mechanical and hydrological properties induced by different types of grasses

Abstract

Previous studies show that soil properties are affected by plant and the change of atmosphere in the shallow soil layers of urban landscape which may affect the stability of geotechnical infrastructures. Many relevant studies have been carried out to find out the relationship and the influences to soil suction induced by plants However, many experiments were designed to be done in laboratory, which may influence and change the actual factors in natural situation. Also, beside of the influence induced by plant, grass in the field monitoring is also one of the important influential factors for variations of soil suction. A series of laboratory tests and field monitoring tests were performed in this study. Soil classification test was carried out in the laboratory; Soil infiltration test was done at the field site to record the permeability variations of the soil under the different type of grass. Beside of this, the installation of the sensors was participated, and image taking was also performed. The field test was intended to monitor the variations of soil properties due to grass activity.