【摘要】 富营养化是中国湖泊的重大环境问题．造成水体富营养化的污染来源可分为外源和内源。当湖泊的外源受到控制以后，由于沉积物中营养盐内负荷的存在和释放，湖泊仍然可以发生富营养化．这时，沉积物中的营养盐就成为湖泊富营养化的主导因子．文章主要就内源污染对富营养化的作用进行分析，并提出初步对策．更多还原

【Abstract】 Eutrophication of lakes becomes a serious environmental problem in China, and pollution sources include internal and external sources. When external pollution sources of the lake are controlled,eutrophication may still happen due to the existence and release of inner loading nutrient in sediment. Then nutrient in sediment becomes the leading factor of the lake eutrophication. This paper mainly analyzes the effect of internal pollution sources on the eutrophication,and puts forward some primary countermeasures.更多还原