三峡水库童庄河浮游植物及其与水质的关系

通过对三峡水库支流童庄河库区的浮游植物进行调查,共检出浮游植物132种,其中蓝藻门23种,隐藻门2种,甲藻门3种,硅藻门55种,裸藻门3种,绿藻门46种.其中硅藻门的种类居首位,甲藻和隐藻则在数量上占优势.主要优势种为飞燕角甲藻(Ceratium hirundinella)和隐藻一种(Cryptomonas sp.).浮游植物的种类和数量随季节和水域不同而呈现差异.应用水质理化指标、污染指示种和污染指示群落评价童庄河水质,显示其水质为Ⅴ类,为β-中污型水体.

Phytoplankton and water quality in the Tongzhuang River of Three Gorges Reservoir

The paper introduced that there were 132 species of phytoplankton were identified during the survey period in Tongzhang River district,Three Gorges Reservoir,including 23 species of Cyanophyta,2 species of Cryptophyta,3 species of Pyrhophyta,55species of Bacillariophyta,3 species of Euglenophyta and 46 species of Chlorophyta.Bacillariophyta has the most diversified speties,while Pyrhophyta and Cryptophyta were the abundant ones.The dominant species were Ceratium hirundinella and Cryptomonas sp.The species and abundance of phytoplantkton varied with seasons and survey areas.Water quality assessment was calculated by using the chemical and physical index,saprobic indicator and saprobic community indicator,overall evaluation result of water quality was V,and the β-type of moderately polluted type.