海水入侵监测站点建设。 面对全球气候变化导致海平面持续上升、极端天气事件频发的严峻挑战，保障沿海超大城市水安全已 成为关乎国计民生的重大议题。 广州市规划和自然资源局（广州市海洋局）（以下简称广州局）通过实施海洋灾害防治国债项目，系 统构建"调查—监测—解析—预测—预警—治理"全链条海水入侵防控体系，在全国率先实现了从"被动应 对"向"主动防控""智慧赋能"的根本性转变，为守护城市水安全、生态安全与资源可持续开发利用提供了新 的保障。 首次摸清入侵本底与规律 从"泛泛而防"到"精准拆弹" 针对不同区域的风险等级，广州局创新构建了"分区分类、双轨并行"的预警阈值体系。 对已咸化区域，实行"高起点、大增量"的防护预警，遏制恶化趋势；对淡水保护区，则采取"低起点、 小增量"的敏感预警，坚决守住优质淡水防线。 该体系内嵌多级自动触发机制，一旦关键指标超限，预警信息即刻推送，实现了从"泛泛而防"到"精准 拆弹"的能力升级。 打造海水入侵防控"广州范式" 广州局打造了"海洋数字孪生系统"。以海量实时监测数据为依据，构建高精度三维水文地质模型，实 现"监测—预警—模拟—决策"全链条管理机制，实现对不同气候情景下的入侵趋势模 ...

Core Points - The "Fourth National Smart Ocean Big Data and Artificial Intelligence Application Innovation Competition (2025)" has officially commenced, aiming to promote research and innovative applications in smart ocean big data and marine artificial intelligence, facilitating high-quality development in the marine sector [1] - The competition serves as a significant avenue for leveraging data application value and accelerating the implementation of artificial intelligence technologies, fostering innovation and integration within the marine digital industry ecosystem [1] - The competition features four main categories: marine big data, marine artificial intelligence and large models, marine digital twins, and marine intelligent equipment, focusing on practical application cases with an emphasis on originality, technological advancement, and practical scenarios [1] Industry Insights - Since its inception in 2022, the competition has successfully hosted three editions, showcasing numerous exemplary cases of marine big data empowering the transformation and upgrading of traditional marine industries, as well as creative solutions for risk management through digitalization [2] - The competition has established itself as an open platform for innovation in concepts, technology research and development, and talent aggregation in the marine big data field, characterized by broad participation, strong interactivity, and high technical standards [2]