Poyang Lake, the largest fresh water lake in China, is located on the south bank of the Yangtze River, in northern Jiangxi Province. It is a lake taking in and sending out water. It is totally different in size in dry and raining seasons, forming the unique landscape of “being lakelike at the high water level, and riverlike at the low one”. Poyang Lake National Nature Reserve is located in the Northwestern part of Poyang Lake, with an area of 224 sq. km. It is one of the first six important wetlands joined the Ramsar Convention in China.