Abstract
Abstract
Ecological grassed waterway not only has the function of drainage, but also has the ecological function of sediment, nitrogen and phosphorus and other materials transmission, filtering or blocking, material and energy source or convergence. Ecological grassed waterway plays an important role in preventing and controlling soil erosion and purifying water quality. As one of the ecological ditches, the ecological grassed waterway is widely used. As a new type of ecological restoration of soil and water conservation measures, the ecological grassed waterway has the characteristics of convenient construction and low cost. It is the effective combination of soil and water conservation measures, engineering measures and grassland. Ecological grassed waterway are composed of drainage ditches and the plants planted in them. Due to the existence of plants, the hydraulic characteristics and sediment transport rules of the ditches are changed. Therefore, based on the definition and significance of ditches and ecological grassed waterway, the study on hydraulic characteristics and sediment transport rules of ecological grassed waterway are summarized and analyzed, which is of important practical value for the technical development and scheme design of ecological grassed waterway, and can provide scientific reference for relevant research on ecological grassed waterway.