桥巩水电站建设对红水河水生生态的影响分析

Analysis of the Impact of the Construction of Qiaogong Hydropower Station on the Aquatic Ecology of the Hongshui River

通过对桥巩水电站建成后浮游植物、浮游动物、底栖动物、鱼类资源的调查,分析了该工程建设对水生生态的影响,论述了采取的鱼类增殖放流、生态流量泄放、船闸措施在水生生态保护方面的作用。结果表明上述措施是有效的,尤其是船闸对于花鳗鲡的上溯具有帮助作用,但由于水库淹没、江段水质变化及人为捕捞等因素,江段流水性鱼类及流域特有鱼类的规模下降明显,为此提出了开展船闸过鱼效果专题观测、加强科研攻关、开展生态调度等方面的改进建议。

Through the phytoplankton,zooplankton,zoobenthos and fish resources survey after the completion of the Qiaogong hydropower on Hongshui River,this paper analyzes the influence on aquatic ecology,discusses the effects of fish restocking,minimum ecological flux discharge and ship lock in the role of the aquatic ecological protection. Results show that the above measures are effective,especially the lock is helpful to Anguilla marmorata migration. But due to the reservoir flood,water quality change and human fishing,the population size of running-water fish and endemic fish in the Zhujiang River basin is decreased significantly. Special observation on the effect of ship lock,strengthening scientific research and ecological flux dispatching are put forward.