soil bioengineering methods used in water management and stabilization slopes steep

the soil bioengineering is an applied science that it is the composition of structural, biological and environment concepts for soil erosion, sediment and flood control. biotechnical engineering techniques rely on biological knowledge to build geotechnical and hydraulic structures and to secure unstable slopes and banks. the largest enhancement in development of new soil bioengineering methods happened in european and 1900s. the recorded document showed that the first documented experiences, including reports and publications, were produced in the areas of the alps, austria, germany, and switzerland. soil bioengineering is the living plant materials that this use in engineering structures and apply sites treatment with problems including surface soil stability and soil erosion. in this study, some methods of soil bioengineering presented in water management such as live pole drains, live silt fences, brush layering, live fascine, live stake and etc. and steep slope stabilization such as wattle fences, modified brush layers, brush layers in a cut ,live cribwall. techniques such as wattle fences and modified brush layers can use for unstable slope or reducing slope angle and also help in vegetation establishment.