黄河调水调沙，“调”出了什么

Group 1 - The "Yellow River Water and Sediment Regulation Theory and Practice" has been recognized as one of the 20 major scientific achievements in the field of ecological civilization in China [1] - The regulation of water and sediment is crucial for the long-term stability of the Yellow River, addressing the imbalance of water and sediment [1][2] - The Yellow River's lower reaches have a unique sediment characteristic, which can be effectively managed through proper water-sediment ratio [1] Group 2 - Water and sediment regulation has significantly improved the flow capacity of the Yellow River's lower reaches, reducing flood risks and enhancing river morphology [3] - Historical data shows that the flow capacity of the Yellow River has been restored from less than 1800 cubic meters per second in 2002 to approximately 5000 cubic meters per second [5] - The cumulative sediment transported to the sea has reached 36.5 billion tons, demonstrating the effectiveness of the water-sediment regulation efforts [5] Group 3 - The regulation efforts have extended the lifespan of the Xiaolangdi Reservoir, with a cumulative sediment discharge of 31.5 billion tons by 2025 [6] - The reservoir's capacity is critical for maintaining its operational efficiency, and sediment accumulation can severely impact its functionality [6] Group 4 - The ecological benefits of water and sediment regulation include the restoration of wetland areas and an increase in biodiversity within the Yellow River Delta National Nature Reserve [7] - The ecological restoration efforts have led to the resurgence of species such as the Yellow River knife fish, which had nearly disappeared for 30 years [8] Group 5 - Future advancements in water and sediment regulation are expected to further enhance the management of the Yellow River, contributing to the overall ecological and economic development of the region [9]