Salix viminalis was the strongest among all strains of the S.Jiangsuensis planted in the plot A and B in the fluctuation zone of the Liujiaxia Reservoir.In plot A

survival rate and preservation rate were 97.30% and 96.20%

respectively.Compared to the S.Jiangsuensis '172'

tree height

breast diameter and the new branch and tree top increased on average by 12.98%

12.50% and 10.28%

respectively.The underground root systems and the plenty of adventive roots growing on basis trucks can greatly reduce soil erosion by reservoir water.The 1 m×1.5 m allocation density of the Salix viminalis showed the best protection

and sediment yield was 8.64 kg/m2

which decreased 74.38% compared to CK.The fluctuation land with a small slope is suitable for survival and growth of willow.