210 species of birds are observated in Yalu River Nature Reserve,only few nature habitat occupied by Saunder's Gull survived in the core of the region,now a serious question about habitat fragmentalization still continued.So it is essential for habitat restoration,ecological management and consideration given to both construction and development.according to the principles and mothods of landscape ecology,restoration ecology,conservation biology,and by the sustainable development.In the near future,much more birds may in be breed,winter migrating in or through Yalu River Wetlands.