【摘要】 针对贡湖湾退渔还湖生态修复区内沉水植物覆盖度及水体透明度出现下降趋势，通过原位围隔试验研究鱼类群落结构调控对湖体水质及沉水植物恢复的影响，结果表明，解除鱼类扰动及摄食影响后，水体透明度从0.6 m快速提升至1.5 m以上，水体中TN、TP、COD_Mn和浊度等水质指标均下降，2年内沉水植物覆盖度可从30%恢复到90%。生态修复区规模性鱼类种群结构调控效果表明，合理调控鱼类种群结构、及时清除大规格鱼类有助于沉水植物群落的恢复和稳定。更多还原

【Abstract】 In view of the decreasing trend of submerged vegetation coverage and water transparency in the ecological restoration area of Gonghu Bay, the effects of fish community structure regulation on lake water quality and submerged macrophyte restoration were studied by in-situ enclosure experiment, the results showed that the water transparency increased rapidly from 0.6 m to more than 1.5 m after fish disturbance and feeding disturbance was removed, and the water quality indexes such as TN, TP, COD and turbidity decreased. The submerged macrophyte community subsequently restored from 30% to 90% within 2 years.The regulation effect of large-scale fish population structure in ecological restoration area showed that reasonable regulation of fish population structure and timely elimination of large-scale fish were helpful to the recovery and stability of submerged macrophyte community.更多还原