Analysis on scouring and silting of tidal-flat change and its dynamic action,Bohe,Guangdong

Based on the remote technique and 5 remote images,waterline of qualitative reversion during the 17 years' time span was obtained and the rate of scouring and silting of lagoon tidal-flat was also further calculated. Moreover,the dynamic actions resulted in the changes of tidal-flat in the present paper were discussed. The results showed that the main trends of the changes of tidal-flat existed were silting spreads,where the open segment occurred by scouring and the shadow zone occurred by silting. It is a key factor for human activity to control the changes of tidal flat,which showed that the mud-flat turned into salt soils,shrimp pools and fish reservoirs,etc.