Recent changes of Shandong sandy coast and in fluence of human activities

The erosion of Shandong sandy coast has become more serious since the end of the 1970s.By now nearly 80% of sandy coast was eroded.Studies of many years have revealed that the recent erosive velocity is 2-3 m/a.A series of human factors have played a decisive rold for the recent aggravated Erosion of Shandong sandy coast.The methods and ways of their action include reducing discharge flux into the ocean by building dams across the rivers and digging sand, etc.to break the energy balance of coastal material and building improper projects on coastline.