The Ebinur Lake Oasis is located in the north of Xinjiang Wei Autonous Region

the west of Gurbantonggut desert. It is one of the most important agricultural regions and cotton bases in Xinjiang. Based on visualinterpretation of MSS

TM and ETM digital images in 1972

1990 and 2001

a classification map and a landuse conversion mat rix are obtained by human-machine interaction classification

and dynamic change of the oasis in recent 30 years is studied. The result shows that both appearance characters and dist ribution area of the oasis have changed greatly

and the oasis area has been enlarged. Especially during the 11 years from 1990 to 2001

the oasis changed much more obviously than previous time. With the expansion of oasis

it has been also conf ronted with some ecological and environmental problems at the same time

i.e.

the balance of primary nature is dest royed

and the confliction between desertification and oasis is protruded more obviously.