2025年西江干流生态敏感期水量调度工作完成|毛片无码国产

  中新网广州8月19日电 (记者 王坚)据水利部珠江水利委员会(下称“珠江委”)19日消息称,该委现已完成2025年西江干流生态敏感期水量调度工作。调度期间,珠江委精准实施3次生态敏感期水量调度,有效保障了西江干流鱼类繁殖关键水文过程,取得了良好的调度效果。

  珠江委介绍,该委高度重视西江流域水生态保护工作,在全面总结上一年度调度工作经验的基础上,优化完善2025年调度方案,在兼顾上游红水河定子滩产卵场鱼类繁殖期生态需求的同时,统筹流域水工程多目标联合调度,进一步细化调度的启动及终止条件。

  珠江委表示,该委通过科学制定调度方案,强化雨水情预报,为实施精细调度筑牢基础。5至7月调度实施期间,大湟江口断面起涨流量、涨水历时、流量涨幅及日涨率等指标均符合生态敏感期调度目标要求,调度形成的洪水过程为西江干流鱼类繁殖创造了适宜的水文环境。

  值得一提的是,在2025年的调度工作中,珠江委将鱼类早期资源监测时段扩展至整个调度期,构建“全时段、多方位”的生态监测网络,同时采用环境DNA监测技术,解析目标产卵场鱼类群落组成,为生态调度提供更为全面、精准的科学依据和技术支撑。

  珠江委称,据监测结果表明,桂平断面以上江段鱼类繁殖活动与洪水过程呈现正响应关系,其间西江干流中下游河段产漂流性卵鱼类卵苗量增幅明显,表明调度期间洪水过程可有效刺激产漂流性卵鱼类产卵繁育,改善目标河段鱼类繁殖发育的生境,提升流域水生态系统功能。(完)

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