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《Marine Science Bulletin》 2007-06
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Remote Sensing Analysis on the Environment Dynamics of the Core Area of the Yancheng Natural Reserve, Jiangsu Province, China

Feng Zhixuan 1, 2, Luo Xian1, Gao Shu1, 2 ( 1.School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, Jiangsu, China 2. Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, Jiangsu, China )  
Based upon the analysis and comparison of two Landsat images of the core area of the Yancheng Natural Reserve, Jiangsu Province, the changes in vegetation, tidal creek system and coastal development patterns over the last 10 years are identified, which benefits an improved understanding of the natural and human factors that affect the coastal wetland ecosystem. The analytical results indicate that the total area of Spartina alterniflora coverage increased 10 times during the last 10 years. The main habitats of rare waterfowls, including the Suaeda salsa flats, grasslands and reed beds show a decreasing trend, with the most severe reduction of grasslands. Furthermore, the area of artificial wetlands, i.e., reed beds and waterfowl ponds, has increased. Finally, the tidal creek systems have changed, with a degenerating trend, which is partly caused by coastal development schemes and the extention of the Spartina alterniflora flats. The findings suggest that the original ecosystem is in the process of degeneration. For the environment protection of the Yancheng Natural Reserve, it is important to protect and reconstruct the original wetlands.
【Fund】: 国家自然科学基金项目(编号40476041);; 江苏省自然科学基金前期预研项目(编号:BK2005211)
【CateGory Index】: X87
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