Core Viewpoint - The article highlights the significant ecological restoration and management efforts undertaken in the Yongding River basin, particularly in Zhangjiakou, resulting in improved water quality and ecosystem health [1][8]. Group 1: Ecological Restoration Achievements - The Yongding River, a major tributary of the Haihe River, has seen a historical transformation in water quality, with the water quality at the Yongding River No. 8 Bridge improving from Class IV to Class III [3]. - In 2023, all 10 national and provincial monitoring sections within the river basin achieved a 100% compliance rate for water quality standards, marking the best performance in history [3]. - The river has maintained continuous flow for three consecutive years since 2022, showcasing the success of ecological water replenishment efforts [3]. Group 2: Wetland Protection and Restoration - Since the 13th Five-Year Plan, a total of 11,000 acres have been converted from farmland to forest, and 18,400 acres from farmland to wetland, contributing to the establishment of seven national wetland parks with a total area of 20,400 hectares [3]. - Ongoing efforts in river channel ecological restoration have resulted in the completion of 170.46 kilometers of river management and the construction of 154.6 kilometers of flood protection embankments [3]. Group 3: Economic and Agricultural Development - The agricultural sector in Zhangjiakou has benefited from the ecological improvements, with the grape planting area expected to reach 135,100 acres in 2024, yielding a total output of 250,000 tons, making it the largest in Hebei Province [6]. - The integration of ecological restoration with agricultural development has created a green ecological barrier for the coordinated development of the Beijing-Tianjin-Hebei region [6]. Group 4: Biodiversity and Ecosystem Health - The biodiversity in the area surrounding the Guanting Reservoir has improved, with the number of wild plant species increasing from 106 to 358 and wild bird species from 169 to 192, including 40 species of national first and second-level protected animals [7]. - The establishment of the Guanting Reservoir National Wetland Park has become a model for resource protection and sustainable use in the Yongding River basin [7]. Group 5: Future Goals - The overall plan for the comprehensive management and ecological restoration of the Yongding River aims to establish a green ecological corridor by 2025, promoting harmony between humans and nature [8].