本研究针对极端气候事件和生物入侵导致的水质下降问题，通过5年监测数据揭示人工水库中有机质对浮游植物群落的非线性影响。研究发现本土类群在有机质浓度达4.9 mgL-1时显著衰退，而入侵种角藻(Ceratium)在5.6 mgL-1时暴发性增长，提出5.25 mg/L的生态管理阈值，为水库治理提供科学依据。

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