【摘要】 2004年5、7、9、12月对大力加湖浮游植物的种类组成结构特征进行了研究。结果表明：大力加湖鲟鱼放养场浮游植物96个种属,密度255.54×10~4 ind．/L,生物量14.166 mg/L。浮游植物季节变化比较明显,密度秋季最高为456.160×10~4 ind．/L,生物量以秋季最高30.105 mg/L。多样性指数变化是夏季＞秋季＞冬季＞春季；均匀度指数变化是冬季＞夏季＞秋季＞春季。全库总鱼产潜力527760 kg,总放养量2804800尾。更多还原

【Abstract】 The species composition of phytoplankton was investigated in Dalijia Lake in May,July,September and December 2004.Results indicate:There were 123 species of phytoplankton.The abundance of phytoplankton was 255.54×10~4 ind./L,The biomass of phytoplankton can reach 14.166mg/L.As the seasons changed,the phytoplankton changed obviously.The abundance apex of phytoplankton of 456.160×10~4 ind./L appeared in sum- mer;and the biomass apex of phytoplankton of 30.105mg/L appeared in autumn.The varia- tion of diversity index was Summer＞Autumn＞Winter＞Spring;and that of evenness index was Winter＞Summer＞Autumn＞Spring.The total potential productivity of this reservoir is 527760 kg,and 2804800 sturgeons were stored in it.更多还原