Landscape effects of environmental impact on bay-area wetlands under rapid urban expansion and development policy: A case study of Lianyungang,China |
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| Authors: | Yangfan Li Xiaodong Zhu Xiang Sun Feng Wang |
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| Affiliation: | 1. State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, China;2. Faculty of Industrial Design Engineering, Delft University of Technology, Netherlands;1. Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing, 210093, China;2. Collaborative Innovation Center for the South Sea Studies, Nanjing University, Nanjing 210093, China;3. Department of Geographic Information Science, Nanjing University, Nanjing 210093, China;4. College of Geography and Environment, Northwest Normal University, Lanzhou, Gansu Province 730070, China;1. Biodiversity Assessment and Monitoring Programme, Alexander von Humboldt Biological Resources Research Institute, Calle 28 A No. 15-09, Bogotá, D.C., Colombia;2. Institute for Land, Water and Society, Charles Sturt University, Albury-Wodonga (Thurgoona) Campus, Elizabeth Mitchell Drive, PO Box 789, Albury, NSW 2640, Australia;3. Basque Centre for Climate Change, Alameda Urquijo 4, 4ª, 48008 Bilbao, Bizkaia, Spain;4. Socio-Ecological Systems Laboratory, Department of Ecology, Universidad Autónoma de Madrid, C/Darwin 2, 28049 Madrid, Spain;1. The University of Queensland, School of Geography Planning and Environmental Management, Brisbane 4072, Australia;2. University of Colombo, Department of Zoology, Sri Lanka;3. University of Peradeniya, Department of Soil Sciences, Sri Lanka;4. University of Moratuwa, Department of Chemical and Process Engineering, Sri Lanka;1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;2. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;1. University of Bonn, Steinmann Institute of Geology, Mineralogy and Paleontology, Nussallee 8, 53115 Bonn, Germany;2. University of Bonn, Institute of Crop Science and Resource Conservation, Department of Plant Nutrition, Karlrobert-Kreiten-Str. 13, 53115 Bonn, Germany;3. University of Bonn, Institute of Geography, Meckenheimer Allee 166, 53115 Bonn, Germany;4. University of KwaZulu-Natal, Centre for Water Resources Research, Pietermaritzburg, South Africa;5. Juelich Research Center, Institute of Bio- and Geosciences, Agrosphere IBG-3, 52425 Jülich, Germany;6. University of Bonn, Institute of Food and Resource Economics, Nussallee 21, 53115 Bonn, Germany;7. University of Bonn, Institute of Organic Agriculture, Katzenburgweg 3, 53115 Bonn, Germany |
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| Abstract: | This paper presents a synthesis of rapid landscape change and regional environmental dynamics in the Lianyungang bay area from 2000 to 2006 based on remote sensing data. We quantified the annual rate of urban land-use change in the study area using classified Landsat TM (2006-05-20) and ETM+ (2000-09-16) images. The classified images were used to generate maps of urban expansion and salt wetlands degradation, and landscape metrics were calculated and analyzed spatiotemporally across class and landscape level for each year. Results indicate that the Lianyungang bay area has a widespread urban–rural interface with rapid land-use changes, urban expansion and wetland degradation. Rapid increases in urban built-up land, which were often associated with large-scale salt wetlands degradation, have been prominent since 2005 when the eastern coastal development policy was implemented. |
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