Abstract: Lakeshore slumping and recession resulting from wave erosion usually causes heavy loss of waterfront property and land resources. Ecological revetment has become the new trend of lakeshore erosion control. In this paper, vetiver is adopted to protect lakeshore against wave attack because of its well-developed root system, phytomechanical properties and adaptability to adverse environment. With the shore-protection works of Donggang Lake as a case study, the patterns and techniques of planting vetiver are introduced. Furthermore, the erosion rates of bare soil lakeshore and vetiver lakeshore were computed and compared using lateral erosion model. Results show that vetiver planting on lakeshore could reduce the shore erosion rate by over 90%. Compared with rigid revetment, ecological revetment is more economic and more environmentally friendly.

Key words: lakeshore erosion, wave, ecological revetment, vetiver, lateral erosion model