Study on Hyriopsis cumingii＇s filtration rates and stocking mode in eutrophic water of Beijing
三角帆蚌对北京富营养化河湖水体的滤水效率和放养方式研究

Hyriopsis cumingii’s filtration rates in eutrophic water were studied,and the difference of purifying effect was compared between upper and bottom stocking by laboratory experiments in Beijing Hydraulic Research Institute Experimental Center in September 2009.The results show that: Hyriopsis cumingii’s average filtration rates are(31.63±6.67)mL/(min·kg).The upper stocking has a great effect on the transparency of water column,and the content of chlorophyll-a reduced markedly after 48h,and then maintains at a lower level.The study suggests that Hyriopsis cumingii is beneficial to purify eutrophic water,and the upper stocking mode is recommended.