湖泊富营养化是因营养物质输入过量而引起的一种水体效应。它不仅突出表现为水中藻类和大型水生植物的过度生长，同时还伴随一系列的水质变化，如ｐＨ增高，深层水缺氧，氮、磷等营养盐含量增高，有机耗氧物增多，水体产生不良异味等，从而导致水质恶化，影响供水、渔业、娱乐 Lake eutrophication is a water body effect caused by excessive input of nutrients. It not only highlights the overgrowth of algae and aquatic macrophytes in water, but also accompanies a series of changes in water quality such as increased pH, deep water anoxia, increased nutrients such as nitrogen and phosphorus, increased organic oxygenates and water bodies Bad smell, etc., resulting in deterioration of water quality, affecting water supply, fisheries, entertainment