Core Viewpoint - The 20th Central Committee of the Communist Party of China emphasizes accelerating the comprehensive green transformation of economic and social development to build a beautiful China [1] Group 1: Water-Sand Relationship Management - The Yellow River's management focuses on the relationship between water and sediment, which is crucial for ensuring the river's long-term stability [2] - Since 2002, 31 water-sand regulation operations have been conducted, sending over 3.5 billion tons of sediment to the sea, significantly improving flood discharge and sediment transport capabilities [2][8] - The coordinated operation of multiple reservoirs is essential for effectively managing the water-sand relationship [5][6] Group 2: Technological Integration - The use of digital twin technology enhances the efficiency of water-sand regulation, allowing for real-time monitoring and adjustments [4][9] - The digital twin system incorporates 5.5 billion data points, creating a virtual representation of the Yellow River for better management and forecasting [9][11] - Advanced monitoring equipment, including drones and sensors, supports the operational efficiency of water-sand management [9][12] Group 3: Ecological Considerations - The Yellow River Protection Law mandates measures to minimize the impact of water-sand regulation on aquatic life and habitats [12] - Research indicates that water-sand regulation has stabilized river dynamics, improving habitats for aquatic species, including rare fish [12][13] - Continuous ecological monitoring is being implemented to understand the relationship between water-sand changes and aquatic biodiversity [12][13]

Core Viewpoint - The 20th Central Committee of the Communist Party of China emphasizes accelerating the comprehensive green transformation of economic and social development to build a beautiful China. The Yellow River's water and sediment regulation is highlighted as a successful integration of traditional wisdom and modern technology in ecological practices [1]. Group 1: Water-Sediment Relationship Management - Since 2002, the Yellow River has conducted 31 water and sediment regulation operations, sending over 3.5 billion tons of sediment to the sea, significantly improving flood discharge and sediment transport capabilities [2][8]. - The management of the water-sediment relationship is crucial for ensuring the long-term stability of the Yellow River, with a focus on regulating and controlling sediment flow through coordinated reservoir operations [2]. Group 2: Reservoir Operations and Technology - The Xiaolangdi Reservoir serves as a key component in the water-sediment regulation process, with precise scheduling to manage sediment discharge effectively [3]. - Digital twin technology is utilized to enhance the efficiency of water and sediment regulation, allowing for real-time monitoring and adjustments to water flow [4][9]. Group 3: Data and Monitoring - The integration of 5.5 billion data points into the digital twin system allows for improved forecasting and operational precision in managing the Yellow River's water and sediment dynamics [9][11]. - Continuous monitoring and data collection are essential for understanding the relationship between water-sediment changes and aquatic life, with ongoing ecological assessments being conducted [12][13]. Group 4: Ecological Impact and Biodiversity - The implementation of water and sediment regulation has led to a stable river environment, positively impacting aquatic biodiversity, including the resurgence of rare fish species [12][13]. - The Yellow River Protection Law mandates measures to minimize the impact of water-sediment regulation on aquatic habitats, highlighting the importance of ecological considerations in water management practices [12].

Core Insights - The article emphasizes the integration of ecological practices and modern technology in the management of the Yellow River, highlighting the importance of water-sediment regulation for sustainable development and ecological restoration [2][3]. Group 1: Water-Sediment Regulation - Since 2002, the Yellow River has conducted 31 water-sediment regulation operations, transporting over 3.5 billion tons of sediment to the sea, significantly improving flood discharge and sediment management capabilities [3][8]. - The regulation process involves coordinated operations among multiple reservoirs, primarily focusing on the Xiaolangdi Reservoir, which serves as a key control point for sediment management [4][5]. Group 2: Technological Integration - The implementation of digital twin technology has enhanced the efficiency of water-sediment regulation, allowing for real-time monitoring and precise control of water flow and sediment discharge [9][10]. - The Xiaolangdi management center utilizes advanced data analytics and monitoring systems, including drones and numerous sensors, to optimize reservoir operations and ensure effective sediment management [9][10]. Group 3: Ecological Considerations - Recent studies indicate that water-sediment regulation has positively impacted aquatic ecosystems, with an increase in fish species diversity observed in the Yellow River basin [12][13]. - The Yellow River Protection Law emphasizes the need to minimize ecological impacts during water-sediment regulation, leading to the development of comprehensive monitoring systems to assess the relationship between sediment dynamics and aquatic life [12][13].

黄河汛期调水调沙结束 累计排沙超780亿千克 在调度过程中，三门峡水库自9月7日15时起按3000立方米每秒预泄，直至敞泄，为小浪底水库排沙出库 提供动力。小浪底、西霞院水库联合调度，根据来水及水库排沙及时调整下泄流量，有效减轻水库河道 淤积，同时确保下游河道防洪安全。自9月8日9时起，小浪底水库按2500立方米每秒下泄，控制花园口 站流量在2600立方米每秒左右；为应对区间降雨过程，9月10日压减下泄流量至2300立方米每秒；降雨 过程结束后，9月13日14时流量恢复至2500立方米每秒。随着上游来水减少，三门峡水库自9月10日15时 起按1600立方米每秒下泄，稳步回蓄。小浪底水库9月17日9时按1500立方米每秒下泄，结束汛期调水调 沙。(完) 来源：中国新闻网 编辑：张嘉怡 广告等商务合作，请点击这里 本文为转载内容，授权事宜请联系原著作权人 中新经纬版权所有，未经书面授权，任何单位及个人不得转载、摘编或以其它方式使用。 关注中新经纬微信公众号(微信搜索"中新经纬"或"jwview")，看更多精彩财经资讯。 中新社郑州9月17日电 (记者 阚力)中国水利部黄河水利委员会(下称黄委)17日消息称，当日9 ...

Core Insights - The Yellow River basin officially entered the flood season on July 1, 2023, with the water and sediment regulation task for 2025 initiated on June 23, lasting 17 days [1] - The Yellow River Delta is a crucial wetland ecosystem in China, recognized as an "international airport for birds," and has received over 900 million cubic meters of ecological water replenishment since 2008 [1] Group 1: Water and Sediment Regulation - Water and sediment regulation is a governance method that involves scientifically managing reservoirs to reduce riverbed siltation and improve river morphology [3] - This process includes controlling the discharge flow from upstream reservoirs to create artificial flood peaks, which transport sediment downstream to the sea, ensuring long-term river stability and ecological health [3] - Since 2002, the national government has implemented water and sediment regulation for the Yellow River based on extensive scientific research, addressing drought resistance and flood preparation [3] Group 2: Ecological Impact - During the water and sediment regulation period, ecological replenishment is initiated, revitalizing the ecological functions of the Yellow River Delta [5] - The wetland area receiving ecological water replenishment has reached 360,000 acres, with bird species increasing from 187 in 1992 to 374 in 2024 [5] - The stable plant community of reeds has developed in the replenished wetlands, leading to increased density and abundance of benthic organisms [5]

Core Viewpoint - The Xiaolangdi Reservoir has officially entered the sediment discharge phase, with a significant increase in sediment concentration, indicating a crucial step in the Yellow River's water and sediment regulation project scheduled for 2025 [1] Group 1 - The outflow water from the Xiaolangdi Reservoir has changed from clear to turbid, with sediment concentration reaching 39.1 kilograms per cubic meter at the sediment discharge outlet [1] - By 16:00, the sediment concentration at the discharge outlet increased to 101 kilograms per cubic meter, highlighting the effectiveness of the sediment discharge process [1] - The sediment discharge process is expected to last until July 9, with a total discharge volume anticipated to exceed 10 million tons, which will help restore reservoir capacity and enhance flood control capabilities [1]

Group 1 - The core viewpoint of the articles emphasizes the completion of the dismantling of seven floating bridges in the Henan section of the Yellow River before the main flood season, ensuring safety during the flood period [1][2] - The floating bridges serve as crucial connections across the Yellow River, and their structure is designed to maintain a flat surface while being supported by steel floating boxes [1] - The management of the floating bridges is critical during the flood season to prevent obstruction of water flow, which could elevate water levels and pose risks to the safety of residents and property on both banks [1] Group 2 - The Henan Yellow River Conservancy Bureau has implemented strict regulations and oversight to ensure the safe dismantling and anchoring of floating bridges, in accordance with the "Flood Management Measures for Floating Bridges in the Middle and Lower Reaches of the Yellow River" [1][2] - A supervisory team has been dispatched to monitor the dismantling process, focusing on the implementation of flood safety measures, maintenance of monitoring facilities, and the establishment of safety warning systems [2] - Floating bridge operators are required to enhance their awareness of flood safety management, maintain a 24-hour duty system, and develop effective emergency measures to prevent accidents such as drifting or losing anchored vessels [2]

Core Viewpoint - The Yellow River Xiaolangdi Water Conservancy Project has officially launched its water and sediment regulation for 2025, with an expected total sediment discharge exceeding 100 million tons during the operation period of approximately 17 days [2]. Group 1: Purpose of Water and Sediment Regulation - The water and sediment regulation aims to "create storage for flood prevention," reduce sediment accumulation in the reservoir, and maintain the flow capacity of downstream rivers. The Xiaolangdi project controls 91.2% of the Yellow River's runoff and nearly 100% of its sediment transport [3]. Group 2: Visitor Experience - During the water and sediment regulation period, the Xiaolangdi scenic area remains open to the public, allowing visitors to experience the impressive sight of the rushing water, which resembles a waterfall [4]. Group 3: Water-Sediment Relationship - The term "regulation" in the context of water and sediment management refers to adjusting the water-sediment relationship to enhance the flood discharge capacity of the river [5]. Group 4: Impact on Power Generation - When the sediment concentration in the water reaches a certain level, the power generation units will shut down to avoid damage. The Xiaolangdi power station has an average annual output of 5.8 billion kilowatt-hours, playing a crucial role in peak regulation within the Henan power grid [6]. Group 5: Impact on Aquatic Life - To mitigate the impact of high-sediment water on fish, clear water is released from three upstream reservoirs to dilute the sediment concentration. Additionally, special fishing operations have been conducted in advance, and fish stocking activities are ongoing to support aquatic life [7]. Group 6: Downstream Sediment Accumulation - Research indicates that maintaining a discharge flow of 2,600 cubic meters per second for over six days will effectively flush sediment from the downstream river into the sea. The regulation process consists of two phases: first, a large volume of clear water is released, followed by sediment discharge [8]. Group 7: Xiaolangdi Water Conservancy Project Overview - The Xiaolangdi Water Conservancy Project is a key engineering project for the management and development of the Yellow River, controlling a drainage area of 694,000 square kilometers, which is 92.3% of the total basin area. The project has a total designed capacity of 12.65 billion cubic meters and aims to provide flood control, sediment reduction, water supply, irrigation, and power generation [9].

Core Points - The Yellow River's water diversion and sediment transport project is currently underway, with significant water flow entering Shandong province, indicating a proactive approach to manage water resources and mitigate drought conditions [1][2]. Group 1: Water Management and Flood Control - The Yellow River will officially enter its main flood season on July 1, necessitating the reduction of water levels in relevant reservoirs to ensure flood control capacity [2]. - The Yellow River Water Resources Commission has initiated a coordinated operation of multiple reservoirs to manage water flow effectively, with maximum discharge from the Xiaolangdi Reservoir expected to reach approximately 4,600 cubic meters per second [2]. - The ongoing water diversion and sediment transport project is characterized by high flow rates and extended duration, which may alter river dynamics and pose risks to river engineering structures in Shandong [2][3]. Group 2: Preparedness and Monitoring - The Shandong Yellow River Administration has revised and implemented water diversion and sediment transport plans, conducting over 40 flood prevention drills and identifying 134 key defense points [3]. - Continuous monitoring is being conducted using nearly 3,000 video surveillance units and over 220 drones to ensure early detection and response to potential flood risks [3]. - The administration is also preparing flood control materials, including 1.33 million cubic meters of stone and 28,300 tons of hemp rope, to ensure readiness during the water diversion process [3].

Core Points - The 2025 Yellow River water and sediment regulation officially commenced on June 23, with a significant increase in discharge flow to 2,600 cubic meters per second, marking the 30th implementation of this initiative [1][3] - The operation is expected to last approximately 17 days, with a total sediment discharge exceeding 100 million tons [1] - The Xiaolangdi Reservoir plays a crucial role in controlling 91% of the Yellow River's runoff and nearly 100% of its sediment transport [1] Summary by Sections Water Management Strategy - The water management strategy involves coordinated operations among the Wanjiazai, Sanmenxia, and Xiaolangdi reservoirs, with a maximum discharge flow of around 4,600 cubic meters per second [2] - The aim is to balance sediment discharge and ecological considerations, ensuring that sediment concentration at the Huayankou hydrological station does not exceed 359 kilograms per cubic meter [2] Historical Context and Impact - Since 2002, the Yellow River Water Resources Commission has conducted extensive research and experiments, leading to 29 previous sediment discharge operations that have cumulatively released over 2.5 billion tons of sediment [2] - These operations have successfully reduced the average riverbed elevation by 3.1 meters and increased the maximum flood capacity from 1,800 cubic meters per second to approximately 5,000 cubic meters per second [2] Objectives and Goals - The current operation aims to achieve multiple objectives, including ensuring irrigation and water supply for the downstream areas, maintaining the riverbed structure, and minimizing ecological impacts on aquatic life [2] - The initiative also focuses on ecological scheduling and delta ecological replenishment, while exploring sediment transport patterns in reservoirs and downstream rivers [2] Safety and Monitoring - The Yellow River Water Resources Commission will closely monitor weather conditions and enhance emergency response measures to ensure the safety and stability of the operation [4] - The Xiaolangdi management center will implement rigorous safety monitoring and inspections to maintain operational integrity throughout the discharge process [4]