Abstract: For revealing the relationship between terrain factors and evolution of spatial pattern of land use, using the aspect of slope, relief amplitude, slope change rate, and the topographic index, and combining with the geological information theory of TUPU from the comprehensive perspective, based on the remote sensing data of TM images in 2000, 2005 and 2010, as well as DEM data of Anhui province, the research analyzed the changing characteristics and regularity about land use pattern on terrain gradient. The results showed that:1)the main land use types of the study area was cultivated land and woodland, the second was construction land and unused land, and the trend of construction land area increased significantly in each period. 2) It's variation in different terrain gradient range of different land use during 2000 and 2010. Low terrain gradient ranges were the advantages of arable land, water area and construction land area; the medium terrain gradient range was concentrated on the area of grassland; the high terrain gradient range was concentrated on the area of woodland. 3) During 2000 and 2010, land use type of TUPU gave priority to with stable type and the anaphase type in the study area. The low and high terrain gradient ranges were the advantaging distribution of stable type of TUPU; the anaphase type mainly distributed on the low, medium high and high terrain gradient range. From 2000 to 2005, the advantaging distribution of woodland had a tendency to the expansion of lower terrain gradient and the arable land was the main source of transfer. During 2005 and 2010, the advantaging distribution of arable land had a tendency to the expansion of higher terrain gradient and the changing mode was mainly including "woodland to arable land", "unused to arable land" and "grassland to arable land".

Key words: land use, terrain factor, terrain niche index, land use change TUPU