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目的 通过对合肥市自来水公司巢湖水源取水口进行浮游藻类的定量定性分析 ,为合肥自来水公司的巢湖水源水质评价提供参考。方法 在距水源厂岸边 1 .5km和 3 .0km取水点处分别设置A点和B点。于 1 999年冬春夏秋四季用 2 5号筛绢网采集定性分析的水样 ,显微镜检鉴定种类。定量分析的水样用有机玻璃采水器 ,用视野法计数各属的细胞数。结果 浮游藻类的定性鉴定 :全年共检出浮游藻类 83种 ,分属于 8门 49属 ,四季均检出的是蓝藻门的铜绿微囊藻和隐藻门的啮蚀隐藻。在距岸边 1 .5公里处即A点检出藻类 73种 47属。在 3 .0km处即B点检出种类要少些 ,有 56种 44属 ,说明A点浮游藻类的生物多样性优于B点。浮游藻类的定量分析 :年度年均藻量A点细胞数为 70 2 4 .2 4万个 /L ,B点为 82 0 5 .67万个 /L ,两者相比 ,B点比A点细胞数分别高出 1 1 81 .43万个 /L即 1 6 .8% ,除秋季外 ,各季藻量B点均高出A点 ,尤其是盛夏 ,B点高出A点 31 .0 %。结论 说明B点在浮游藻类数量组成上多于A点 ,两点藻量的季节变化趋势是夏季 >秋季 >春季 >冬季
Objective To quantitatively and qualitatively analyze the floating algae in Chaohu water intake of Hefei Water Company, and provide a reference for the evaluation of water quality of Chaohu Lake in Hefei Water Company. Methods A and B points were set respectively at the water withdrawal points of 1.5 km and 3.00 km from the shore of the water source plant. In 1999 spring, winter, autumn and autumn seasons with 25 mesh sieve collected qualitative analysis of water samples, microscopy identification of species. Quantitative analysis of water samples with plexiglass water harvesting, visual field method to count the number of each cell. Results Qualitative identification of phytoplankton: 83 species of phytoplankton were detected, belonging to 8 genera and 49 genera, all of which were detected by cyanobacteria Microcystis aeruginosa and cryptophyta in the four seasons. 73 species and 47 genera of algae were detected at point A, 1.5 km away from the shore. The species detected at 3.0 km away from point B was less, with 56 species of 44 genera, indicating that the biological diversity of planktonic algae at point A was better than that of point B. Quantitative analysis of planktonic algae: annual average annual algae volume of A point cells was 70244200 / L, B point is 82506700 / L, compared to the two, B point than point A The number of cells was 11184300 / L or 16.8%, respectively, except that in the autumn, the B point of each quarter was higher than A, especially in midsummer, and the B point was 31.0 higher than A %. The results showed that the amount of phytoplankton in point B was more than that in point A, and the seasonal variation trend of two-point algae was summer> autumn> spring> winter