Analysis on coastline and coastal wetland changes in Yueqing bay in recent 30 years

Taking the Landsat ETM and Landsat TM images as the main data sources, the 6 phase of the Yueqing bay coastline was extracted by means of human-computer interaction in 1990~2017.The Markoff matrix method was used to calculate the change law of tidal flat, and the changes of coastline and coastal wetlands were analyzed according to the year.Based on the local data, the driving forces of coastline and coastal wetland change in the Yueqing bay region were analyzed.The results show that the Yueqing bay shoreline with artificial shoreline, shoreline change, the change rate of the uneven distribution, change of coastal wetlands in the whole area changed little, the artificial wetland mainly by natural wetland system, human reclamation is a major factor in the Gulf of Yueqing coastline and coastal wetland change.