Introduction to the 10,000-mu river-bank poplar tree: The 10,000-mu river-bank poplar tree has been cited as the Daocheng poplar tree with the highest altitude of 3,750 meters in the world and the largest afforestation area (more than 100,000 acres). It is the pride and pride of Daocheng people. It is the crystallization of the development and transformation of nature by the rice farm people.