中文摘要：

通过设置不同生物量的背角无齿蚌,研究其对再悬浮水体总悬浮质（TSS）、叶绿素a（Chla）及水体营养盐含量的影响。结果表明：（1）背角无齿蚌可以快速降低水体中总悬浮质（TSS）和叶绿素a（Chla）的浓度;（2）增大背角无齿蚌生物量可加快水体总悬浮质（TSS）和叶绿素a（Chla）浓度的下降速度;（3）背角无齿蚌在第2天可降低水体总氮（TN）、总磷（TP）、总溶解磷（TDP）的含量,升高总溶解氮（TDN）的含量,但试验结束时,空白组和有蚌组总氮（TN）、总溶解氮（TDN）、总磷（TP）、总溶解磷（TDP）均没有显著差异（P〉0.05）。因此,背角无齿蚌可在水体生态修复初期用于快速降低水体悬浮物和浮游藻类含量,但从长期看,不能明显改善水体营养盐含量。

英文摘要：

Our study aims to reveal the influence of Anodonta woodiana on the total suspended substance（TSS）, chlorophyll a（Chla） and water nutrients via setting different levels of Anodonta woodiana biomass. The results are as follows.（1） Anodonta woodiana could lower the concentrations of TSS and Chla in the water quickly.（2） The concentrations of TSS and Chla decreased faster in the treatments of high biomass of Anodonta woodiana.（3） Anodonta woodiana decreased the concentrations of TN, TP, TDP and boosted the TDN in the second day, while there was no significant difference（P〉 0.05） between the blank treatments and the Anodonta woodiana treatments at the end of this experiment. This study indicates that Anodonta woodiana can reduce the TSS concentrations and phytoplankton biomass obviously it the beginning of ecological restoration process, but it does not improve the water qualities in a long term view.