基于绝对主成分-多元线性回归牧羊河流域水环境污染源解析

Source Apportionment of Muyang River Watershed Based on Absolute Principal Component Score-multiple Linear Regression

为了做好昆明市饮用水源地的保护工作,对松华坝水库主要入库河流进行水质采样监测,在水环境监测和污染源调查的基础上,建立污染源分析模型,对牧羊河污染源进行分析,确定流域主要污染源.牧羊河主要水质指标不能稳定维持在地表水Ⅱ类标准,主要超标污染物为总氮、总磷和化学需氧量;基于绝对主成分-多元线性回归模型的分析表明,主要污染源为农村生活污染源和农业污染源.

In order to ensure the protection of Kunming drinking water sources,water quality sampling and monitoring were conducted on the main rivers of Songhuaba Reservoir.Based on water environment monitoring and pollution source investigation,a pollution source analysis model was established to analyze the pollution source of Muyang River and determine the main pollution sources in the basin.The primary water quality in the Muyang River cannot consistently meet the ClassⅡstandard for surface water quality,and the main pollutants exceeding the standards are TN,TP and COD.The analytical results of the Absolute Principal Component-Multiple Linear Regression model based on the risk source show that the main pollution sources are rural domestic pollution sources and agricultural pollution sources,and non-point source pollution is the primary contributor in the protection area.