Analysis on Land Use/Land Cover Changes in Dongjiang River Basin

Based on Landsat TM/ETM+ remote-sensing images and basic geographic information data in 1985 and 2000,the changes of land use/land cover in Dongjiang River Basin in recent 15 years were analyzed by using RS and GIS information acquisition technology,spatial analysis technique and landscape ecology method.The results showed that the major land covers were cropland and woodland.In recent 15 years,the area of woodland sharply decreased,the area of construction land increased significantly,cropland increased.The relative change extent of water area and unused land was little.The main directions of land use types transfer were the conversions between woodland,cropland and construction land,the conversions between cropland and construction land.The land use changes of areas had obvious regional difference.The landscape diversity of areas increased and the fragment of the landscape degree enlarged.The influences of the land use patterns of areas were more and more distinct by human activity.