Assessing the Impact of Miscanthus Sinensis on Soil Strength Parameters and its Role in Flood Erosion Control

In this study, distinct types of ethnic plants of Arunachal Pradesh were examined for selection as a soil stabiliser. Considering the geographical factors and plant properties, the Miscanthus Sinensis plant was selected as a soil stabiliser. As an experimental study, 1 month old Miscanthus Sinensis plant was planted in a grid pattern on the bank of Pare River for an area of about 200 sqm. The plants were allowed to develop naturally for a year. Thereafter, the effect of the Miscanthus plant on the shear strength parameter of the soil was determined every month. It was determined using a triaxial test (UU condition) in the laboratory. Further, the important parameters such as Root Anchoring Index (IRA), Root Binding Index (IRB) and tensile strength of the root were determined to check the bonding strength between the root and the soil. It was observed that the presence of miscanthus improved the cohesion of soil up to 59 % to 90%. Miscanthus plants have remarkably high IRA and IRB values. Miscanthus plants restricted the flood velocity and soil movement during the flood.