Abstract：To simulate the propagation of typhoon wave in the coastal sea area, the mangrove coast of Zhanjiang was chosen as the study area, the Typhoon KAI-TAK illustrated by the Holland typhoon model was selected as the meteorological background, and the three level nested grids were set to establish the SWAN model. Based on the simulated results of typhoon wave, the numerical model for typhoon wave propagation in vegetation field was built by arranging vegetation along Zhanjiang coast, furthermore, the vegetation impacts on typhoon wave propagation were analyzed by the model. The results showed that the wave height's attenuation due to vegetation increases with the increase of plant height and plant density, as well as the width of plant area.
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