Status Evaluation of Water Quality and Change Trend Analysis for Qinghe River

In order to control the pollution and improve the water quality in river,the status quo of water quality and the pollution sources in Qinghe River are found out here in detail.Through the field test and laboratory analysis to get the data on surface water environment factors,the single factor index and comprehensive evaluation method are used to evaluate the water quality of the river,and the water quality change trend is analyzed based on historical data,fanally providing a basic reference for the comprehensive management of the river basin.