Dynamic Analysis of Land Use and Landscape Pattern Change in Yuechi County

Based on the software of ERDAS IMAGINE 9.0 and ArcGIS 9.3 and remote sensing data of 1993,2001 and 2007,the landscape changes of Yuechi County was quantitatively analyzed by using supervised classification method and landscape ecology theory.The results showed that the area of arid land,woodland,building land and water body area was increased,and the area of arid land and building land had the biggest amplification in the recent 15 years,increased 110.41 km2 and 47.99 km2,respectively.While the area of arid land and other land use tending to decrease,and the area of arid land had the biggest amplification of 180.03 km2.From 1993 to 2007,the patch density of water body area and other land use decreased,other landscape types increased.Disturbed by human activity,landscape diversity index increased firstly,and then decreased.While the landscape fragmentation index increased.