Abstract: The environment of cropland- converting to woodland (grassland) district of Loess Plateau is relatively fragile,and the local economy is undeveloped.It is very important to choose a reasonable model for its economic development,which deeply relates the effect of "developing the West" strategy.Based on the survey of the district,the models of converting cropland to woodland (grassland) were analyzed.The results showed that the models of present environment protection and environment economy did not consider enough the advantages of local community,which in turn resulted in the inefficiency for sustainable development.The model of eco-tourism could solve these problems.With the resources and sustainable systems analyzed,it was indicated that the resources,location,policy,traffic,and service facility were all enough for tourism development.The phases and tasks of tourism development and the frame of zoning were put forward.

Key words: Leymus chinensis, Clonal population, Matter production and storage, Restoration succession, Flooded meadow