Changes of urban wetlands in Wuhan, China, from 1987 to 2005


Urban wetlands play a significant role in the sustainable development of the urban eco-environment. However, accelerated urbanization has caused rapid changes in urban wetland landscape patterns, which may seriously affect their functions. Based on land-use maps, TM images, and field data from the Wuhan wetlands, the spatiotemporal evolution and wetland landscape pattern were quantitatively analyzed, with reference to landscape ecology indices of diversity, fragmentation, dominance, shape, and dimension. The results showed that: (1) the natural wetland area decreased: lakewetlands andmarshwetlands decreased by 18.71% and 50.3% from1987 to 2005, respectively; (2) artificial wetland area increased by 47.75% in Wuhan over the same period; (3) the lake wetland area ofWuhan declined due to the conversion of large lakes tosmaller ones; (4) the value of the diversity index (H), evenness index (E), and fragmentation index (F) decreased,while the value of the dominance index (D) increased from1987 to 2005; (5) the landscape shape index (LSI) and fractal dimension (FD) of the river wetlands, lake wetlands, bottomland wetlands, and marsh wetlands decreased, while the LSI and FD of the reservoir and pond wetlands increased from1987 to 2005; and (6) natural, societal, and economic, as well as human, activities are major factors for the structural changes in the Wuhan wetland landscape, as revealed by canonical correlation analysis.Results suggest that the ecological environment of urban wetlands should be protected to maximize the services of urban wetland ecosystems in Wuhan, China. [ABSTRACT FROM AUTHOR]


wetlands, landforms, aquatic resources, biotic communities, fragmented landscapes

Date of this Version










Link Out to Full Text