Wetland Landscape change in Daliaohe River basin and the driving factors analysis

Taking the Landsat TM images of Daliaohe River basin in 1992, 2001 and 2007 as data source, based on the land use data from imagery interpretation, the wetland landscape change was analyzed, meanwhile, the natural and socio-economic factors driving landscape change were discussed. The main conclusions are as follows: There is an obvious transformation trend from natural wetland landscape to artificial wetland landscape and other landscape, as well as from other landscape to artificial wetland landscape. From 1992 to 2007, the temperature of Daliaohe River basin rises with fluctuations, and the precipitation and runoff decrease slowly, the regional climate appears to turn from warm wet to warm dry. Commonly, that will lead to wetland area decrease and affect the wetland landscape. From landscape level, the agriculture development has greater influence on wetland landscape during 1992 to 2001, while the primary, secondary, tertiary industry development all have impacts on wetland landscape during 2001 to 2007. From class level, Sown area per capita has greater influence on beach land from 1992 to 2001, the natural land areas of river, lake and marsh are influenced more deeply by the agriculture development pushed by mechanization and the tertiary industry development from 2001 to 2007.