Study of catchment LUCC is present focus of global change research. Based on the interpreted Landsat-TM image data and the support of ArcGIS software

this paper uses the conversion matrix of land-use types

synthetical land-use index and spatial centroid model to discuss the land-use change in Taoerhe catchment during the last 15 years. Results show farmland area increases and forest coverage decreases obviously. As the important hydrological and climatic adjustor in Taoerhe catchment

waters area also decreases a few. Forest coverage in the upper reaches decreases and most these disappeared forest land has been changed into grassland

and the spatial centroid of forest land moves southeastward of the Taoerhe catchment. Although most the disappeared forest land has been changed into the grassland

grassland area increases a little

because large area of grassland in the middle and lower reaches has been reclaimed into farmland

leading to northwestward moving of spatial centriods of grassland and farmland. The synthetical land-use index shows during the last 15 years land-use intensity in Taoerhe catchment also increases obviously. The overall trend of land-use change indicates a certain extent of degradation of eco-environment in Taoerhe catchment during the last 15 years.