【摘要】 综合应用国内外湖库营养控制标准的制订方法的基础上,提出了湖泊富营养化评价的综合营养指数校验法,并对三峡库区支流进行了富营养化评价.结果显示,调查期间,30条支流中,19条支流的平均营养状态指数为富营养化水平,11条支流的平均营养状态指数为中营养水平.4～9月各支流的平均综合营养状态指数值均达到富营养化水平,8月份出现最大值(55.43),显示春、夏季节库区支流发生富营养化的风险较高,应为控制库区富营养化发生的敏感时期.与目前国内传统的由"七五"期间调查的26个湖泊总结得出的"湖库富营养化评价方法及分级技术规定"的评价方法相比,综合营养指数校验法的评价结果比较符合三峡水库支流的实际水质状况,适用于三峡水库支流的富营养化评价.更多还原

【Abstract】 On the basis of comprehensive applying the methods for making nutrient control standards in domestic and international lakes and reservoirs,an improved comprehensive method for nutrient state index was expressed,and the eutrophication assessment to the tributary of Three Gorges Reservoir was studied. Tributaries of the reservoir were mainly at middle-eutrophication level during the investigation. Among the 30 tributaries,19 tributaries were at the level of eutrophication,while the others were at the level of mid-etrophication. The average integrated nutrient state index of tributaries was high from April to September,and these tributaries all reached the level of eutrophication. The maximum value of tributaries was 55.43 in August. Tributaries had a higher risk of eutrophication in Spring and Summer. April to September should be a sensitive period which should control the occurrence of eutrophication in the reservoir. The comprehensive nutrient index method proposed was consistent with actual water quality condition of tributaries in Three Gorges Reservoir,and is suitable for eutrophication evaluation of tributaries in Three Gorges Reservoir.更多还原