The Yangtze River is the longest river in Asia and the third-longest in the world. It flows through a wide array of ecosystems and is habitat to several endemic and endangered species. The Yangtze River drains one-fifth of the land area of the People’s Republic of China (PRC). Its river basin is home to one-third of the country’s population. The Yangtze plays a large role in the history, culture and economy of China. The Yangtze River Delta generates as much as 20% of the PRC’s GDP. For thousands of years, the river has been used for water, irrigation and industrial production. The largest hydro-electric power station in the world is located in the River.