应用浮游植物群落结构指数评价海域富营养化

探讨了浮游植物对海水富营养化程度的指示作用，并用浮游植物群落结构指数对天津近岸海域的富营养化水平进行了现状评价，结果表明，天津近岸海域水质基本属中营养水平，但某些站位在有些季节呈严重的富营养水平，并呈现枯水期和丰水期高，平水期低的特征，与化学指标的评价结果相比，结果基本一致，说明该方法是可行的，特别是当浮游植物大量繁殖，消耗了大量的营养盐，生物学指标更能正确合理地进行水质评价

Application of phytoplankton community indexes in coastal eutrophication assessment

Phytoplankton as indication of coastal eutrophication was analyzed. The coastal water eutrophication of Tianjinwas assessed using Phytoplankton community indexes. The result shows that the coastal water of Tianjin was moderatelyeutrophication, but some stations in the water were heavily eutrophicated in some seasons, characterized by heavily eutrophicated in summer and spring, while lower eutrophication in autumn. The assessment results were basically consistentwith the conclusion of chemical indexes assessment, therefore, it was more objective and comprehensive method, specially in the period of phytoplankton bloom which dissipates the amount of nutrients.