苍山含翠，洱海卧波。风轻抚，湖面上海菜花时而聚拢，时而散开，如同精灵舞动。行走洱海畔， 人景相融的生态画卷美不胜收。 "苍山不墨千秋画，洱海无弦万古琴"。为了守护洱海美景，多年来，云南省大理白族自治州坚持统 筹洱海保护和绿色发展，全面打响洱海保护治理攻坚战、持久战，洱海水质、水环境、水生态逐步改 善。 今年8月，大理州委、州政府与省生态环境厅联合发布"洱海指数"，保护洱海更加讲究科学、系 统。 科学评价，"洱海指数"助力系统性生态保护 夜晚，洱海上亮起一盏盏渔灯，如同星河入梦。 如今正是2025年洱海鱼类生态调控第二阶段。晚上8时，大理州大理市挖色镇海印村附近，渔民杨 瑞兴准备下网捕捞西太公鱼。 "过去捕鱼得选准网，还得算准时间。"杨瑞兴说，如今生态调控"神奇得很"。"通知写明啥时候 捕、用啥网、网眼多大，就能捕到要求捕捞的鱼种。" 大理市洱海管理局副局长孙潇介绍，洱海鱼类生态调控主要针对银鱼和西太公鱼等外来鱼类和鲢、 鳙等放流鱼类，可以优化鱼类种群结构，完善湖泊生态系统功能。而捕什么鱼、啥时捕、怎么捕，则根 据中国科学院水生生物研究所对洱海鱼类监测评估结果确定。 "洱海指数"有什么用？杨学松介绍，从这套指标 ...

苍山含翠，洱海卧波。风轻抚，湖面上海菜花时而聚拢，时而散开，如同精灵舞动。行走洱海畔，人景 相融的生态画卷美不胜收。 "苍山不墨千秋画，洱海无弦万古琴"。为了守护洱海美景，多年来，云南省大理白族自治州坚持统筹洱 海保护和绿色发展，全面打响洱海保护治理攻坚战、持久战，洱海水质、水环境、水生态逐步改善。 今年8月，大理州委、州政府与省生态环境厅联合发布"洱海指数"，保护洱海更加讲究科学、系统。 科学评价，"洱海指数"助力系统性生态保护 夜晚，洱海上亮起一盏盏渔灯，如同星河入梦。 "鱼类生态调控是进行生态修复的环节之一，生态修复的工作成效在'洱海指数'的'生态'维度得以体 现。"中国科学院水生生物研究所研究员刘永定介绍，近年来，洱海持续开展水生植被恢复、鱼类种群 调控和藻华防控，海菜花、裂腹鱼等物种已有所恢复，显示洱海湖泊生态系统的健康向好态势。 大理州洱海管理局副局长杨学松介绍，"洱海指数"从干净、清澈、生态、共享等4个维度设置8项评价指 标，对洱海生态保护情况进行综合评价。 "干净"指标关注污染治理，"清澈"重点评价湖泊水质，"生态"维度以湖泊中部分生物种类数量评价生态 系统的健康程度，"共享"注重评价湖泊的供 ...

Core Viewpoint - The Dali Bai Autonomous Prefecture in Yunnan Province has made significant progress in the ecological protection and governance of Erhai Lake, with the introduction of the "Erhai Index" to scientifically evaluate and guide conservation efforts [1][4][6]. Group 1: Ecological Protection Measures - The "Erhai Index" consists of eight evaluation indicators across four dimensions: cleanliness, clarity, ecology, and sharing, providing a comprehensive assessment of the lake's ecological protection [4][8]. - The ecological regulation of fish species, particularly targeting invasive species and optimizing the fish population structure, is a key component of the restoration efforts [2][5]. - Continuous investment in ecological protection has been substantial, with approximately 47.2 billion yuan allocated since the 13th Five-Year Plan, leading to the construction of sewage treatment facilities and the implementation of pollution control measures [6][10]. Group 2: Monitoring and Data Utilization - A sophisticated monitoring network, termed "Digital Erhai," has been established, featuring 428 automatic monitoring stations that provide real-time data on water quality and quantity [5][6]. - The platform enables quick responses to pollution incidents, exemplified by a rapid reaction to a sewage leak in 2022, showcasing the effectiveness of the monitoring system [6][10]. - The integration of data from 26 departments enhances collaborative efforts in ecological protection and management [5][6]. Group 3: Economic and Social Impact - The ecological improvements have led to a surge in tourism, with Dali receiving 98.21 million visitors and generating 120.8 billion yuan in tourism revenue in the first three quarters of the year, reflecting a 19% increase [9][10]. - The establishment of an ecological compensation mechanism has facilitated financial support for pollution control, benefiting both upstream and downstream communities [10]. - Local communities are increasingly engaged in tourism-related activities, with the number of homestays in Gusheng Village growing from a few to over 100 in five years, indicating a shift towards sustainable economic practices [10].