The article discusses the protection and management of water resources in the Danjiangkou Reservoir area and its upstream basin. It highlights issues like water pollution, infrastructure delays, and challenges in treating pollution. The researchers emphasize the importance of monitoring and managing the water environment to ensure the quality of the reservoir's inflow and water supply to the north. They suggest a new approach called the 5+1 basin coordination management mode to improve water quality and balance economic development with environmental protection.