Wetland is called the cradle of mankind, a gene pool of living things and thekidney of nature because of huge productiveness, ecological and environmental values.Wetland, forest and ocean are the three most important ecosystems on earth. With theviolent increase of world population and rapid development of economy, wetland degradesfor the changes of ecological character in wetlands ecosystem including decrease inwetland area, water pollution, biodiversity reduction and weakened function of wetland...