时隔30年，刀鲚再次上溯到长江中游江段和洞庭湖区

Core Points - The ecological protection and restoration of water resources in China has made significant progress, with the return of the knife fish to the middle reaches of the Yangtze River and Dongting Lake after 30 years [1] - In 2023, the Ministry of Ecology and Environment issued scoring criteria for water ecological assessment in the Yangtze River Basin, advancing pilot assessments for 50 water bodies [1] - The Yangtze River's ten-year fishing ban is being promoted, alongside the protection of aquatic biological resources in key river basins such as the Yangtze and Yellow Rivers [1] Summary by Categories - Ecological Progress - Knife fish has returned to the middle reaches of the Yangtze River and Dongting Lake after a 30-year absence [1] - The population of Yangtze finless porpoises has increased to 1,249 [1] - A total of 344 native fish species were monitored in the Yangtze River Basin from 2021 to 2024, an increase of 36 species compared to 2017-2020 [1] - Monitoring and Assessment - The Ministry of Ecology and Environment has implemented water ecological monitoring and assessment, transitioning from qualitative descriptions to quantitative evaluations [1] - Regular assessments of water ecological conditions are being conducted [1] - Waterway Management - The Grand Canal has been fully connected for three consecutive years, and the Yongding River has been fully connected for four consecutive years [1]