Author(s)

Haiou Zhang

Corresponding Author

Haiou Zhang

Abstract

In 2011, Shaanxi Provincial Government launched the three-year action to prevent and control water pollution in the Weihe River Basin. 2014 was the year of the end of the three-year operation of the Weihe River water pollution prevention and control. In order to evaluate the effectiveness of the Wei River water pollution prevention and control action, according to the monitoring data of Weihe River water quality from 2005 to 2014, the temporal and spatial variation characteristics of ammonia nitrogen, CODcr, total phosphorus and total nitrogen in 13 national monitoring sections of Weihe River were analyzed. The results show that the water quality of the four sections of the 13 sections of the Shaanxi section of the Weihe River from 2005 to 2010, except the Linjia Village to Changxing Bridge, meets the water quality functional standards, and the water quality of the other 9 sections exceeds their functional standards for water quality. All of them are inferior category V and the pollution is extremely serious. From 2011 to 2014, the water quality of the Weihe River's main stream improved significantly. The three-year “iron fistula treatment” effect was obvious. The continuous improvement of water quality in the Weihe River also indicated that the water quality in the Guanzhong area of the Yellow River Basin in Shaanxi Province has been improving year by year.

Keywords

Weihe River, Pollution Indicators, Temporal and Spatial Characteristics of Water Quality, Variation along the Course, Water Quality Improved