广东省水库富营养化评价

Assessment of Reservoir Eutrophication in Guangdong Province

广东省水库水环境质量调查评价结果表明：广东省水库水质总体较好，但不同程度地发生了富营养化；在汛期，被 评价的132座水库中中营养型水库111座，中富营养型水库12座，富营养化水库2座；非汛期，中营养型水库111座，中富 营养型水库11座，富营养化水库1座．造成水库富营养化的主要原因是面污染的日益加剧、城市污水排放量的激增、水土 流失造成水库泥沙淤积严重、水库蓄水量减少等．水库的富营养化影响了其使用功能．为恢复富营养水库的使用功能，其 对策主要是减少面污染物排放量、提高污水处理率、加强水土流失的治理、清除淤泥等．

The investigations and evaluation on the water quality and eutrophication status of 132 reservoirs in Guangdong province reveal that the water quality is good in general while a majority of the reservoirs are in mesotropher to eutropher status, The major factors causing reservoir eutrophication are more serious non-point sources pollution, rapid increase in sewage discharging, reservoir sedimentation resulting from soil erosion and decrease in reservoir storage. The countermeasures against reservoir eutrophication in- clude reducing non-point sources pollutant, raising the rate of sewage treatment, controlling soil erosion, increasing reservoir storage and removing algae.