【摘要】 作者对东平湖重要水生生物资源──浮游植物的种类组成及数量分布进行了初步研究。并依据调查结果选用“污染指示种”、“指示群落”和“马加利夫多样性指数”等方法对东平湖水质污染状况进行了评价。研究表明，浮游植物对水体污染具有较好的指示作用；东平湖属寡污－β中污型水体。更多还原

【Abstract】 The species composition and densities of phytoplankton, which is an important hydrobiological resource in Dongping Lake, were preliminarily studied. On the basis of the investigation of the phytoplankton, a,biological assessment of water pollution was conducted by using the methods of "saprobic indicator’, "indicator community" and "Margalef diversity index". The results suggest that water pollution can be indicated by phytoplankton. The trophic type of Dongping Lake could be regarded as oligotrophic to mesotrophic.更多还原