Abstract
Coastal wetlands are valuable natural resources, which provide diversified habitats and important ecological barriers for coastal areas. This study employs the method of inundation frequency and utilizes Landsat images collected every five years, from 1985 to 2023, to analyze the changing trends of tidal flats in Zhejiang Province, in China. Additionally, remote sensing images from the years 1990, 2000, 2010, and 2023 were selected to extract land use statistics in the research area using the random forest method. The findings indicate that the area of coastal cities in Zhejiang Province experienced an initial increase followed by a subsequent decrease from 1985 to 2023. Through the analysis of tidal flat transitions, it was determined that water is the primary source of tidal flat transformation, while the predominant types of land use conversion from tidal flats are mainly aquiculture and unutilized land.