然而，湖区曾因跨省区治理协同不畅、行政监管步调不一，特别是网箱养殖无序扩张，导致水质持续恶 化，水体富营养化问题日益突出，成为长期难以根治的"顽疾"。 2025年广西环保世纪行采访团近日走进广西壮族自治区百色市隆林各族自治县，眼前的万峰湖碧波荡 漾，湖面、小岛和群山组成一幅山水画卷。 万峰湖位于黔、桂、滇三省（区）结合部，是"珠三角"的重要水源，共管水域涉及广西百色市隆林各族 自治县、西林县，贵州黔西南州兴义市、安龙县，云南曲靖市罗平县等"三州市"，其水质状况直接关系 沿岸百姓的生产生活和珠江流域的高质量发展。 万峰湖湖面、小岛和群山组成一幅山水画卷。王以照 摄 据介绍，《百色市万峰湖保护条例》颁布实施以来，隆林各族自治县辖区万峰湖断面水质明显改善并提 升至Ⅰ类，可以达到饮用标准，为历年来最优水质。 2017年，中央第七环保督察组在贵州省督察时发现，万峰湖库区网箱面积超过规划养殖面积的3.93倍， 每天投入的饲料超过5000吨，总氮和溶解氧超标3倍以上，曾经碧绿的湖水沦为恶臭的"黑水"。 面对万峰湖日益凸显的生态环境问题，2023年1月1日，滇、黔、桂三省(区)针对万峰湖治理探索开展的 广西全区首个跨区域协同 ...

Core Viewpoint - The article discusses the long-term efforts and challenges in the ecological restoration and pollution control of Taihu Lake, highlighting the transition from severe pollution to improved water quality over 30 years, with a focus on collaborative governance and innovative solutions to address the complex pollution issues [1][4][19]. Group 1: Water Quality Improvement - Taihu Lake's water quality has improved from Class V to Class III over 30 years, establishing itself as a benchmark for large lake nutrient management internationally [1]. - The average depth of Taihu Lake is 1.9 meters, making it a shallow lake with limited self-purification capacity, which complicates pollution management [2][3]. - In 2022, the population in the Taihu basin accounted for 4.8% of the national total, and the regional GDP represented 9.8% of the national GDP, indicating significant economic activity in the area [3]. Group 2: Pollution Sources and Challenges - The shallow nature of Taihu Lake allows sunlight to reach the bottom, promoting blue-green algae growth, which is exacerbated by industrial pollution and urbanization in the surrounding areas [2][3]. - The 2007 blue-green algae outbreak highlighted the complexity of pollution sources, leading to a shift in focus from ecological restoration to source control and pollution interception [4][6]. - The Taihu basin has faced severe pollution, with 67% of monitored points classified as inferior Class V water quality, indicating a critical need for effective pollution control measures [3]. Group 3: Governance and Collaborative Efforts - The governance of Taihu Lake has evolved from fragmented management to a more coordinated approach, with the establishment of inter-agency collaboration and joint initiatives among cities [15][16]. - The introduction of the Taihu Lake water pollution prevention office in 2009 marked a significant step towards unified management of water quality across different jurisdictions [16]. - Recent initiatives include the establishment of cross-regional cooperation mechanisms and joint law enforcement efforts to tackle pollution effectively [17][18]. Group 4: Economic Transformation and Sustainable Development - The shift from high-pollution industries to green, low-carbon economic models is crucial for the sustainable development of the Taihu region, with significant reductions in polluting industries [12][13]. - The transformation of Zhou Tie Town from a chemical industry hub to an eco-friendly area demonstrates the potential for economic growth while prioritizing environmental protection [12][13]. - By 2024, the region has seen a stable GDP growth rate while improving water quality, showcasing a successful model of balancing economic development with ecological sustainability [14].