Main Features and Problems of Modern Evolution Process of Coastal Wetlands in North Jiangsu,China |
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| Authors: | Ninglei Ouyang Guosheng Li Linlin Cui Huajun Liao |
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| Institution: | 1.Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences (CAS),Beijing,China;2.University of Chinese Academy of Sciences,Beijing,China;3.College of Resources and Environment,Chengdu University of Information Technology,Chengdu,China |
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| Abstract: | Based on field monitoring and remote sensing extraction, this paper analyzed the landscape evolution, reclamation process and transformation characteristics in north Jiangsu coastal region since 1980 through landscape transfer analysis, landscape spatial conversion model, and landscape dynamicity model. Results indicated that natural wetland decreased while in contrast the artificial wetland increased. Natural wetland was mostly converted into mudflats, and large proportion of mudflats were subsequently exploited into aquaculture waters, and other man-made construction projects. Significant transformation ranking ahead were mudflat to aquaculture waters, Suaeda glauca to dry land, Suaeda glauca to aquaculture waters, Couch grass to aquaculture waters, respectively. The proportion of transformation caused by anthropogenic activities was up to 82%, much higher than natural succession. Coastal ecological systems were severely disturbed and destroyed largely due to wetland reclamation and resources exploitation. The results suggest that the impact of human activity on wetland ecology needs more attention. |
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