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A photorealistic aerial view of a vast green wetland landscape with waterways, fields, and floating vegetation under a cloudy sunset sky.

A photorealistic aerial view of a vast green wetland landscape with waterways, fields, and floating vegetation under a cloudy sunset sky.
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当前，苏北“南水北调”沿线湖群在水资源调度、农业排放与气候变化的复合压力下，生态系统呈现突变特征，草-藻系统频繁转换、水华暴发与植被退化并存。然而，对湖泊生态系统演化过程仍缺乏系统性认知，人类活动与气候变化的交互效应尚未实现定量剥离，生态风险预警与调控缺乏理论支撑。目前，湖区农业面源治理多侧重单项拦截技术，缺乏生态沟渠—塘坝—净化湿地等协同拦截与循环回用系统，退水利用率偏低；在生态修复方面，浅水湖泊生境重构与草型系统恢复技术尚未突破，沉水植物群落难以实现稳定存活与扩繁，经典生物操纵理论在多重压力湖泊中适用性不足，导致治理效果难以持续，系统自维持能力弱。治理技术体系尚未系统化集成，生态修复与稳定维持能力有限。 See more

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