鄱阳湖水环境质量及主要污染物变化趋势分析

对1985~2013年鄱阳湖水环境质量进行分析评价,结果表明:鄱阳湖水质总体呈下降趋势,目前富营养化状况属中营养状态,主要污染物为总磷、氨氮。运用季节性Kendall检验法对主要污染物总磷、氨氮进行变化趋势分析,大部分主要入湖河流控制断面、湖区监测断面以及出湖控制断面湖口,总磷、氨氮呈上升趋势。

Trend Analysis of Water Quality and Main Pollutants in Poyanghu Lake

The water quality of the Poyanghu Lake during 1985-2013 was investigated and assessed. The results show that the water quality presented a decreasing trend, the current eutrophication status was moderate, and the main pollutants were the total phosphorus (TP) and ammonia nitrogen (NH3-N). By using the seasonal Kendall test for the main pollutants of TP and NH3-N, it was found that TP and NH3-N appeared a significantly rising trend for most of monitoring cross-sections into or in the lake and the controlling-sections in the lake outlet.