China has numerous lakes. More than 2,800 natural lakes have a surface area of over 1 square km, and some 130 lakes cover more than 100 square km. There are also a large number of artificial lakes (reservoirs). With different salt content, the lakes are classified into saltwater and freshwater lakes. Large lakes are mainly distributed in the middle and lower reaches of the Yangtze River and on the Qinghai-Tibet Plateau. The Poyang Lake, situated south of the Yangtze River in the north of Jiangxi Province, is the largest freshwater lake in China while the Qinghai Lake on the Qinghai-Tibet Plateau is the largest saltwater lake.