The main vegetation types in this region are forest and grassland, whereas crop land occupied a little part. Therefore, the complex vegetation composition is very suitable to investigate the present method of forest cover classification. The main tree speciesinclude Siberian elm , larches , Chi-nese pine , Birch ,and Populus davidiana . Grass speciesmainly consists of Achnatherum ,Agriophylli , and spear grass (Stipacapillata Linn.).