Abstract
Wetlands play an important role in nutrient cycling, sediment accretion, pollution filtration, and erosion control in the world. In addition, they are known for their distinctive flora and rich spectrum of wildlife, especially waterfowl, which makes them more valuable and more prone to human impact than other ecosystems (Costanza et al., 1997, Mitsch and Gosselink, 2007). However, only a small percentage of the original wetlands remain around the world after over two centuries of intensive development and urbanization. With so many wetlands lost, it seems that there are many opportunities for wetland restoration along coastal lines, rivers, lakes, etc. In the wetland restoration process, ecological engineering is an important strategy to follow, as it is designed with natural components and strives to achieve balance between human beings and nature. Many case studies have proven that ecological engineering obviously benefits the wetland restoration and promotes sustainable development for districts, countries, even the world. For example, Spartina ecological engineering in China designed by Chung and Qin has gained much benefit and its ecological-economic value had been estimated at US$ 20,000/ha (Qin et al., 1997, Qin et al., 1998, Chung et al., 2004).