The wetlands in the Modern Yellow River Delta occupy an important position in the world.However,the wetlands in the area have been degraded in some ways in recent years.Therefore,using a combination methods of supervised classification and visual interpretation,the wetland distribution in the Modern Yellow River Delta were extracted based on the 1985-2014 Landsat TM images.Moreover,the spatio-temporal change trends and the main problems of the wetlands were analyzed,and the corresponding wetland protection ...