优良水质比例提升近30个百分点，地区生产总值翻一番多（权威发布）

Core Viewpoint - The development of the Yangtze River Economic Belt has achieved significant progress over the past decade, focusing on ecological protection and green development, resulting in improved water quality, economic growth, and increased residents' disposable income. Group 1: Environmental Improvements - The proportion of good water quality in the Yangtze River has increased from 67% to 96.5% [1] - The water quality of the main stream has maintained a Class II standard for six consecutive years, with flagship species like the Yangtze River dolphin showing population recovery [4] - A total of 1361 illegal docks have been thoroughly cleaned up, and black and odorous water bodies in cities along the river have been largely eliminated [2] Group 2: Economic Growth - The regional GDP of the Yangtze River Economic Belt has more than doubled, increasing its share of the national GDP from 42.2% to 47.3% [1] - Residents' per capita disposable income has risen from 23,000 yuan to 44,000 yuan, representing a 91% increase [1][3] Group 3: Industrial and Technological Development - The Yangtze River Economic Belt has fostered the emergence of innovative companies and advanced technology in fields such as artificial intelligence and quantum information [6] - A total of 41 national-level advanced manufacturing clusters and 30 strategic emerging industry clusters have been cultivated, accounting for 51% and 45% of the national totals, respectively [6] Group 4: Infrastructure and Transportation - The high-grade navigable waterways of the Yangtze River have increased from 8,000 kilometers to 11,000 kilometers, with cargo throughput at trunk ports growing by 71% to reach 4.2 billion tons [3] - The construction of green service facilities along the Yangtze River has been completed, including 20 green service areas and 13 washing stations [7] Group 5: Disaster Prevention and Management - The water and drought disaster prevention system in the Yangtze River basin has shown significant effectiveness, successfully managing major floods and droughts in recent years [5] - The Yangtze River fishing ban has led to a positive recovery in aquatic biodiversity, with the number of native fish species monitored increasing by 36 since the ban [5]