Abstract: By using RS and GIS technology, data collected from remote sensing images of TM or ETM in 1992, 2000 and 2010 was analyzed to figure out landscape pattern changes in the different sedimentary coastal areas of Yancheng from Biandan estuary to Xingang port coastal wetland. The results indicated that in the erosion, transition and sedimentation regions, the massive original natural landscape types were converted to the artificial landscape type from 1992 to 2010, and the transfer rate in the erosion region (85.76%) was greater than in the sedimentation region (78.15%), followed by the transition region (56.96%). For the transfer of landscape elements: in the erosion region, the main conversion of the landscape components was Aeluropus littoralis, Saueda spp. and Spartina spp.→ Aquaculture pond, A. littoralis and Pragmites communis → farmland; the characteristics of natural succession of vegetation were obvious in the transition region, which was A. littoralis→P. communis→Saueda spp.→Spartina spp.→mudflats; the transfer of landscape elements in the sedimentation region showed two distinct phases during periods of 1992 to 2000 and 2000 to 2010. For the landscape heterogeneity: the fragmentation of sedimentation region > entire region > erosion region > transition region; the dominance of transition region > erosion region > entire region > sedimentation region; the diversity of transition region > entire region > sedimentation region > erosion region. For the factors causing landscape changes: natural factors occupied the dominant position in the transition region, while artificial factors were the dominant in the erosion and sedimentation regions. Therefore, how to achieve winwin economic and environmental benefits become the focus of the regions.

Key words: soil hydraulic pro-perties, saline soil, biochar, polyacrylamide, coastal reclamation region