Abstract
To study Geomorphology of intertidal flat around southeastern of Jindo was measurement using terrestrial Lidar and drone and sedimentary environment analysed grain size of surface sediment in the Dadohaehaesang National Park. Compared to average height of intertidal flat was decreased more than 0.1m(2cm/yr) after removed Spartina Alterniflora of invasive salt marsh vegetation species. In southeastern site of intertidal flat before invasive salt marsh vegetation removal was lower height and distributed bimodal/ multimodal of finer mud facies. On the other hand, in northwestern site of intertidal flat after removed that was higher height and distributed of 3Ø more coarser sand facies. This results showed reworking and disturbance from resuspension of loosely finer sedimentary environment during removed then.
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