摘要
2006年3月至2007年1月对东江湖水质进行了监测和评价。结果表明,东江湖综合污染指数为0.45,水质总体良好,属于地表水的Ⅱ～Ⅲ类,但东江湖各断面水质在洪水前和洪水期差异显著;水质主要受控于重金属镉和总氮、总磷;东江湖周边氮磷污染源数多、面广、量大,洪水引起水体总磷、总氮迅速增大,水色变深,导致水体透明下降;东江湖现处于中营养水平。
It was first time to overall staged monitore and evaluat the waters quality in Dongjiang Lake. Result testified waters quality was very well as the integrated pollution index was only 0.45 from Mar. 2006 to Jun. 2007 and belong to grade 2 or 3 according to surface waters criterion, but strong differences existed among monitoring stations before and during flooding period caused mainly by Cd. TN and TP. Nitrogen and phosphorus resources around Dongjiang Lake were so many and spread in large areas and vast quantity. Flooding caused those phenomene that TN,TP concentrations were increased rapidly, and water color turn so black that water transparence was turndown. Water body in Dongjiang Lake was in the condition of middle trophie level.
出处
《水生态学杂志》
北大核心
2009年第2期139-144,共6页
Journal of Hydroecology
关键词
东江湖
污染指数
营养水平
Dondjiang Lake
Pollution index
Trophic level
