In order to know the state of eutrophication of Shipeng Reservoir in recent years ,this article uses-the relevant weighted comprehensive nutrition state index methodto evaluate and analyze the eutrophication status based on the water quality monitoring data from 2007 to 2011 .This article discusses the data of the different years in the same season and the same year in different seasons by classification and comparison ,and then analyzes it with the origin image .Thus it can obtain the variation tendency of the different influencing factors in these five years and also the main influencing factors of different seasons in a year .%为了解石棚水库近几年的富营养化状态，基于2007～2011年石棚水库的水质监测数据，采取相关加权综合营养状态指数法，对石棚水库富营养化进行评价，对结果进行了分析。在分析中，采取的是对相同季节、不同年份和不同季节、相同年份的数据进行分类比较，然后结合origin图像进行分析。这样既得出了各个影响因子在这5年中的变化趋势，又得出了一年中不同季节的主要影响因子。
展开▼
