柳河流域阜新市彰武段水质时空变化研究

Study on Temporal and Spatial Variation of Water Quality in Zhangwu Section of Fuxin City in Liuhe River Basin

文章以柳河流域彰武段2011-2020年水质监测数据为依据,研究了柳河流域彰武段近10a水质的时空变异特征,并对水质变化趋势及其污染现状利用有机污染综合指数进行了分析。结果表明:柳河流域彰武段水质呈好转趋势,可见流域内水环境保护取得了一定成效;然而,枯水期水质大多处于严重或中等污染状态,年内水质具有较大的季节性差异;氨氮属河段内主要污染物,下游段水质不如上游段,污染物主要输入区域和重点污染区域为西二老段、丁家苗圃段。

Based on the monitoring data of water quality in changwu section of Liu river basin from 2011 to 2020,the temporal and spatial variation characteristics of water quality in Changwu section of Liuhe river basin in recent 10 years were studied,and the trend of water quality change and pollution status were analyzed by using organic pollution comprehensive index.The results show:the water quality in Changwu section of Liuhe river basin is in a trend of improvement,indicating that the water environment protection in the basin has achieved certain achievements.However,the most of water quality in dry season is seriously or moderately polluted,and there is a great seasonal difference in water quality during the year.Ammonia nitrogen is the main pollutant in the reach,and water quality in the lower reaches is not as good as that in the upper reaches.The main input area and the key polluted area are Dingjia Nursery section and the Western Erlao Section.