Abstract: Land use/land cover change(LUCC) is one of the core issues in global change research,which plays an important role in the study of arid region ecology and environmental dynamics.Taking the typical oasis of Yutian County in southern Xinjiang as study area,and using 2 temporal TM images combined with field survey,the proper land use/land cover indices were chosen,according to the actual conditions.With the application of 3S techniques(remote sensing,GPS and GIS),2 temporally different images were processed accurately,and rather high precision classification statistics and LUCC transform matrix were acquired.The spatial-temporal dynamic change pattern of Yutian oasis with a span of 10 years was analyzed,and some corresponding countermeasures to the ecological and environmental problems were put forward.The methodology and the conclusions of this study could afford some references to the improvement of ecological environment and the sustainable development at the southern fringe of Tarim basin.

Key words: Bashang region, Donggou, DCCA, OAC, Gradient analysis, Human disturbance