Ecological Character Changes and Sustainability Management of Wetlands in the Yellow River Delta

The paper presents several kinds of ecological character changes of wetands in the Yellow River Delta, including changes in wetland types and areas, changes in water condition and water quality, unsustainable exploitation and use for wetland products. The reasons of ecological changes are analysed, they is nature and man factors that induce wetland changes. Then the paper suggests a strategy about sustainability management for wetland ecosystem in the Yellow River Delta, and three countermeasures of sustainability management are proposed in the paper, they are, from ecological indices, mitigating, restoring and maitaining the function and process of wetland ecosystem; from social indices, solving the problems between wetland development and conservation; and from economical indices, dealing with the relationship between industry, agriculture and wetlands.