【摘要】 为了解三角帆蚌（Hyriopsis cumingii）生物扰动对白洋淀水质的影响,通过模拟构建湿地,考察了低（4 g/L）、中（12g/L）、高（20 g/L）密度三角帆蚌对COD和N,P,植物色素积累以及水体微生物的影响。研究表明,中、高密度三角帆蚌会增加水体COD,TN,NH₃-N和TP,但低密度三角帆蚌对水质没有影响（P> 0.05）;三角帆蚌增加了水体中变形菌门丰度,促进了水中NO₃^--N,NO₂^--N及可溶性磷酸盐积累;三角帆蚌促进了轮叶黑藻色素的增加,中密度组促进最明显（P<0.05）。研究显示,低密度三角帆蚌生物扰动有助于改善湿地水生态。更多还原

【Abstract】 The effects of Hyriopsis cumingii’s bioturbation on water in Baiyangdian wetland were studied by simulation experiments.The effects of low（4 g/L）,medium（12 g/L）,high（20 g/L） density Hyriopsis cumingii on COD,N,and P water,and influence to plant pigment accumulation and microbial community were investigated.The results showed that,COD,TN,NH₃-N and TP were increased in medium and high density groups.But the low-density group had no effect on water quality（P> 0.05）.Hyriopsis cumingii increased the abundance of Proteobacteria in water,and promoted the accumulation of NO₃^--N,NO₂^--N and P in water.The pigment of Hydrilla varticillata were increased.The promotion effect was most obvious in the medium density group（P <0.05）.This study shows that bioturbation of low-density Hyriopsis cumingii can contribute to the improvement of wetland water ecological.更多还原