Oasis is the particular landscape of arid area. It is the basis of people’s existence, the supporting body of economic development and the main location of people’s activity. The stability of oasis has a direct relation with the development of human being. With the ceaseless exploitation and utilization, large-area land was abandoned and the NPP of vegetation descended because of salinization and secondary salinization, which heavily reduce the productivity of land and limit the development of agriculture. ...