The Luanhe River Basin is one of the most important sources of sand for sandstorms in Beijing and Tianjin.To alleviate the hazards,a sandification control program for areas near Beijing and Tianjin was carried out in June2000,which could have changed the landscape pattern of this basin.Firstly,the present study used landscape pattern indices to analyze landscape pattern changes from 1980 to 2010.Secondly,the SWAT model was used to reveal how the changes in landscape pattern influenced the surface runoff,wat...