Abstract: With multi-temporal remote sensing data and landscape pattern research approach,which is based on GIS,we analyzed the change of landscape in Liaohe estuary wetland during the last 30 years, figured out the landscape patterns of four periods (1976,1989,1998,2004) in the study area and computed the area of major landscape types,patch amount,the landscape indexes and landscape type transfer matrix of 4 periods. The results showed that Landscape types in Liaohe estuary did not change during the last 30 years,but Change of landscape pattern was found mainly in the spatial transition of landscape types,and usually with rapid rate and big degree in the transiton,and it was highly correlated with the impact of human activity and disturbance, especially, the agriculture development, oil production,and urbanization.

Key words: landscape pattern, remote sensing data, estuary wetland, Liaohe delta.