Abstract: In recent 20 years, the ecoenvironment in western plain of Jilin Province deteriorates evidently, and sustainable development of the area has been restricted by the saltilization, desertification and degradation of the grassland. Land Use/Cover Changes(LUCC) has seldom been used to settle the problems on ecoenvironment before. It was applied in the paper that dynamic monitor on TM image data of different time and RSGIS integration technology. Information on land use dynamic changes and the using styles transform were picked up throw RS image interpreting and space information superposing, which showed that two styles of infield and salinealkali soil increased and three styles of grassland, water area and marsh decreased. Discussion is given that the impulse forces on land use styles transform, and using suggestions on land resource were put forward at last.

Key words: land use, dynamic change, RS interpretation, spatial overlay analysis